subject:(crack)

Université de Neuchâtel

1. Bidiville, Adrien. Wafer sawing processes: from microscopic phenomena to macroscopic properties.

Degree: 2010, Université de Neuchâtel

URL: http://doc.rero.ch/record/20349

► The majority of the solar modules are based on crystalline silicon (c-Si) wafers. Whereas the c-Si technology can offer a high efficiency, its main drawback… (more)

▼ The majority of the solar modules are based on crystalline silicon (c-Si) wafers. Whereas the c-Si technology can offer a high efficiency, its main drawback (compared to traditional means to produce electricity) is the cost. The wafers account for one third of the total module cost, as high purity (thus expensive) silicon is required. One way to decrease the solar electricity cost is to decrease the amount of silicon needed for a wafer, for instance by sawing thinner wafers. Another way is to increase the solar cell production line yield by producing stronger wafers and hence reducing the breakage rate. From a technological point of view, both ways are equivalent, as thinner wafers have to be comparatively stronger to sustain the processing stresses. The core of this work is the analysis and understanding of the impact of wire-sawing parameters on the wafer’s mechanical properties with the aim of sawing thinner and stronger wafers. Wafer wire-sawing consists of a wire transporting a slurry, made of abrasive silicon carbide particles and lubricant, through a silicon brick. Such a process is complex, as it involves dynamic processes, fracture mechanics, fluid dynamics as well as tribological aspects on various length-scales. In the first part of the work, characterisation methods were developed to quantify the wafer quality: roughness, crack depth distribution, breakage stress, wafer thickness and Raman measurements were carried out. Furthermore, a TEM study was made to get a precise view of the silicon just below the wafer surface, and the surface at the top of the sawing groove was analysed to get a fundamental understanding of the material removal mechanisms. Two parametric studies were carried out to get insight into the influence of the sawing parameters on these wafer properties. The parameters that were studied were the abrasive size distribution, the slurry density, the wire tension and the feed rate. The first campaign focused on large parameter variations in order to have a global view of the variables determining wire-sawing, whereas the second campaign concentrated on lower variations and a more thorough study of these parameters closer to their standard values. From these data, mechanisms of crack creation are proposed and a novel semi-analytical model describing the wafer strength as a function of the sawing parameters is given. It is based on physical interactions and allows a deeper understanding of the sawing mechanisms. Furthermore, the effect of the sawing parameters on the wafer thickness is analysed. From these campaigns, it is seen that stronger wafers are obtained by using a fine abrasive, a low wire tension and a slow feed rate. A third study about the silicon debris impact on the wafer quality was carried out. It is found that below a given debris amount, they have no effect, but over this threshold, sawmarks appear and the wafer strength quickly decreases. This is put in relation with the findings from the two first sawing campaigns and a novel mechanism explaining the saw-mark creation is… Advisors/Committee Members: Christophe (Dir.), de (Codir.).

Subjects/Keywords: crack

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APA (6^th Edition):

Bidiville, A. (2010). Wafer sawing processes: from microscopic phenomena to macroscopic properties. (Thesis). Université de Neuchâtel. Retrieved from http://doc.rero.ch/record/20349

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bidiville, Adrien. “Wafer sawing processes: from microscopic phenomena to macroscopic properties.” 2010. Thesis, Université de Neuchâtel. Accessed March 05, 2021. http://doc.rero.ch/record/20349.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bidiville, Adrien. “Wafer sawing processes: from microscopic phenomena to macroscopic properties.” 2010. Web. 05 Mar 2021.

Vancouver:

Bidiville A. Wafer sawing processes: from microscopic phenomena to macroscopic properties. [Internet] [Thesis]. Université de Neuchâtel; 2010. [cited 2021 Mar 05]. Available from: http://doc.rero.ch/record/20349.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bidiville A. Wafer sawing processes: from microscopic phenomena to macroscopic properties. [Thesis]. Université de Neuchâtel; 2010. Available from: http://doc.rero.ch/record/20349

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

2. Chen, Cheng-yu. Computation of Radial Crack on a Disk.

Degree: Master, Applied Mathematics, 2006, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828106-204339

► This thesis uses the boundary approximation method to solve a crack problem. On a unit circle, assume there is a crack along the radial direction… (more)

Subjects/Keywords: crack

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APA (6^th Edition):

Chen, C. (2006). Computation of Radial Crack on a Disk. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828106-204339

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Cheng-yu. “Computation of Radial Crack on a Disk.” 2006. Thesis, NSYSU. Accessed March 05, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828106-204339.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Cheng-yu. “Computation of Radial Crack on a Disk.” 2006. Web. 05 Mar 2021.

Vancouver:

Chen C. Computation of Radial Crack on a Disk. [Internet] [Thesis]. NSYSU; 2006. [cited 2021 Mar 05]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828106-204339.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen C. Computation of Radial Crack on a Disk. [Thesis]. NSYSU; 2006. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828106-204339

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech

3. Jiang, Chenglong. A crack detection and diagnosis methodology for automated pavement condition evaluation.

Degree: PhD, Civil and Environmental Engineering, 2015, Georgia Tech

URL: http://hdl.handle.net/1853/55524

► Pavement cracks are one of the most common pavement surface distresses. Traditionally, pavement crack evaluation is conducted manually through a human field survey, which is… (more)

▼ Pavement cracks are one of the most common pavement surface distresses. Traditionally, pavement crack evaluation is conducted manually through a human field survey, which is subjective, labor-intensive, time-consuming, and dangerous to field engineers in the hazardous roadway environment. Methods have been developed to automate this process, including both crack detection and classification. However, none of these methods have been fully automated and implemented. For crack detection, the active contour based minimal path procedure has demonstrated better performance than other existing algorithms; however, it mathematically requires one or more prior input points for each crack curve and cannot be fully automated, which introduces tedious and subjective manual work in practical use, especially for high-density cracks. In this study, a crack detection algorithm to detect accurate and continuous crack curves in a fully automatic manner is proposed. It consists of five major steps: 1) image enhancement through non-crack feature removal and profile rectification, 2) crack potential map generation through adaptive thresholding and tensor voting, 3) key point identification through iterative morphological thinning and skeleton analysis, 4) crack curve detection between neighboring key points using two-point minimal path procedure, and 5) crack curve selection through statistical analysis to remove false positive artifacts. The proposed algorithm has demonstrated its robust performance with a diverse data set, including the different pavement surface types (asphalt dense graded surface, asphalt open graded friction course surface, and concrete surface), and the different crack patterns (longitudinal, transverse, the combination of both, and alligator). Also, the proposed algorithm has outperformed the dynamic optimization algorithm, which has had the best accuracy as an automatic algorithm in pertinent literature, and the commonly used commercial crack detection software. For crack classification, although methods have been developed to classify the primitive crack types (e.g. longitudinal and transverse cracks), it remains a challenge to classify the complicated, real-world crack types and severity levels specified by transportation agencies. In this study, a generalized crack diagnosis framework is proposed to transform detected crack maps into meaningful decision-support information valuable to engineers. The proposed framework features a multi-scale crack representation based on a crack fundamental element model, which extracts rich properties from the detected crack maps, and a supervised classifier calibrated with real pavement data, which interprets the extracted crack properties into crack types and severity levels can be flexibly applied to different distress protocols. The proposed framework has been implemented with real-world distress protocols, including AASHTO standard PP 67 and GDOT's PACES protocol. Experienced pavement engineers have compared the results against manual surveys. The proposed framework has… Advisors/Committee Members: Tsai, Yichang (advisor), Amekudzi-Kennedy, Adjo A. (committee member), Lai, James (committee member), Meyer, Michael D. (committee member), Wang, Zhaohua (committee member), Yezzi, Anthony J. (committee member).

Subjects/Keywords: Pavement condition evaluation; Crack detection; Crack classification

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jiang, C. (2015). A crack detection and diagnosis methodology for automated pavement condition evaluation. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/55524

Chicago Manual of Style (16^th Edition):

Jiang, Chenglong. “A crack detection and diagnosis methodology for automated pavement condition evaluation.” 2015. Doctoral Dissertation, Georgia Tech. Accessed March 05, 2021. http://hdl.handle.net/1853/55524.

MLA Handbook (7^th Edition):

Jiang, Chenglong. “A crack detection and diagnosis methodology for automated pavement condition evaluation.” 2015. Web. 05 Mar 2021.

Vancouver:

Jiang C. A crack detection and diagnosis methodology for automated pavement condition evaluation. [Internet] [Doctoral dissertation]. Georgia Tech; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1853/55524.

Council of Science Editors:

Jiang C. A crack detection and diagnosis methodology for automated pavement condition evaluation. [Doctoral Dissertation]. Georgia Tech; 2015. Available from: http://hdl.handle.net/1853/55524

4. ASSIS, Mércia Cristina da Silva. Entre pedras, prostituição e lamas: um estudo sobre as experiências das usuárias de crack em Santo Amaro, Recife/PE .

Degree: 2017, Universidade Federal de Pernambuco

URL: https://repositorio.ufpe.br/handle/123456789/32291

► A presente pesquisa teve o objetivo de analisar as relações entre o consumo de crack e prostituição de mulheres nos manguezais nas proximidades da Avenida… (more)

▼ A presente pesquisa teve o objetivo de analisar as relações entre o consumo de crack e prostituição de mulheres nos manguezais nas proximidades da Avenida Artur Lima de Cavalcanti, nomeada pelos sujeitos da pesquisa por Chupa-chupa, no bairro de Santo Amaro, em Recife, Pernambuco. Para tanto, a pesquisadora acompanhou mulheres inseridas no Programa de Atenção Integral aos Usuários de Drogas e seus familiares (ATITUDE), que presta assistência aos/às usuários/as de crack e outras drogas. O contato com as usuárias de crack, através do programa, possibilitou a construção de vínculos e diálogos que resultaram em oito entrevistas realizadas nas unidades de acolhimento e nas ruas e manguezais do bairro de Santo Amaro. Optou-se pela análise de natureza qualitativa, por compreender que tal abordagem possibilitaria explicar em profundidade os significados e características do fenômeno estudado. Dessa forma, foram realizadas análises a partir da perspectiva de gênero, levando em consideração a intersecção dessa categoria com as dimensões de raça e classe social. Tal abordagem permitiu compreender as diferenças, hierarquias e assimetrias que atravessam o cotidiano de mulheres e que perduram, inclusive, nas abordagens cientificas sobre a temática. Essas questões estão eivadas de complexidades nos marcos do capitalismo contemporâneo, pois é no advento desse modo de produção que o consumo de substâncias psicoativas ganha novos contornos, gerando, inclusive, consumos danosos para saúde e para segurança pública. Santo Amaro é historicamente lugar de contrastes e contradições, revelando elevados índices de pobreza que perduram coexistindo lado a lado com áreas de expressiva riqueza da capital pernambucana. Assim, esta pesquisa também reflete sobre os determinantes históricos que dão forma ao bairro. Os resultados apontam que as trajetórias das mulheres são marcadas pelas múltiplas violências situadas desde o período da infância, perpassando a adolescência e perdurando na fase adulta. Além disto, as violências sofridas são reflexo da ausência de direitos básicos como o acesso à moradia, educação, saúde e emprego/renda. Essas mulheres fazem parte da produção do espaço urbano em meio a um complexo cenário de relações sociais banhadas pelas múltiplas desigualdades. A partir dos seus relatos, foi possível enfatizar as múltiplas experiências que elas vivenciaram, afastando pressupostos essencialistas no que tange às identidades femininas. Ademais, através dos relatos, notou-se que a perspectiva que prima por uma suposta natureza feminina amordaça e silencia as pluralidades ao abrir precedentes para violações daquelas consideradas transgressoras dos papéis postos como representativos do gênero que representam. Essas mulheres, no cotidiano, precisam encarar as contradições e assimetrias sociais de gênero, quando são culpabilizadas por não corresponderem às expectativas sociais, impostas ao universo feminino, seja nos papéis sociais de mães ou de esposas, ou quando tomam as ruas e são acusadas como moralmente inferiores. Tais assimetrias,… Advisors/Committee Members: LIMA, Rosa Maria Cortês de (advisor), http://lattes.cnpq.br/2545477925999979 (advisor).

Subjects/Keywords: Crack; Prostituição; Pobreza

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APA (6^th Edition):

ASSIS, M. C. d. S. (2017). Entre pedras, prostituição e lamas: um estudo sobre as experiências das usuárias de crack em Santo Amaro, Recife/PE . (Masters Thesis). Universidade Federal de Pernambuco. Retrieved from https://repositorio.ufpe.br/handle/123456789/32291

Chicago Manual of Style (16^th Edition):

ASSIS, Mércia Cristina da Silva. “Entre pedras, prostituição e lamas: um estudo sobre as experiências das usuárias de crack em Santo Amaro, Recife/PE .” 2017. Masters Thesis, Universidade Federal de Pernambuco. Accessed March 05, 2021. https://repositorio.ufpe.br/handle/123456789/32291.

MLA Handbook (7^th Edition):

ASSIS, Mércia Cristina da Silva. “Entre pedras, prostituição e lamas: um estudo sobre as experiências das usuárias de crack em Santo Amaro, Recife/PE .” 2017. Web. 05 Mar 2021.

Vancouver:

ASSIS MCdS. Entre pedras, prostituição e lamas: um estudo sobre as experiências das usuárias de crack em Santo Amaro, Recife/PE . [Internet] [Masters thesis]. Universidade Federal de Pernambuco; 2017. [cited 2021 Mar 05]. Available from: https://repositorio.ufpe.br/handle/123456789/32291.

Council of Science Editors:

ASSIS MCdS. Entre pedras, prostituição e lamas: um estudo sobre as experiências das usuárias de crack em Santo Amaro, Recife/PE . [Masters Thesis]. Universidade Federal de Pernambuco; 2017. Available from: https://repositorio.ufpe.br/handle/123456789/32291

Georgia Tech

5. Chatterjee, Anirban. A fast and accurate automated pavement crack detection algorithm.

Degree: MS, Civil and Environmental Engineering, 2017, Georgia Tech

URL: http://hdl.handle.net/1853/60686

► The US Federal Highway Trust Fund spent USD 42.95 Billion in 2015 out of which the principal expenditure was the maintenance of existing highway infrastructure.… (more)

▼ The US Federal Highway Trust Fund spent USD 42.95 Billion in 2015 out of which the principal expenditure was the maintenance of existing highway infrastructure. To optimize the use of resources for infrastructure maintenance, regular road infrastructure condition surveys are required. Automated road condition surveys involve the use of survey vehicles to collect road infrastructure condition data and distress detection algorithms to automatically assess the infrastructure condition. These automated road condition surveys provide a safe and efficient alternative to manual road condition surveys. However, widespread adoption of automated road condition surveys is yet to be realized. One problem is the lack of robust, accurate and fast algorithms to detect pavement distresses. Pavement cracking is by far the most widespread and serious distress on road infrastructure. Although some crack detection algorithms have been developed to provide a high level of accuracy, their computation time makes them infeasible to implement in real-time, leading to the costly requirement of saving a large volume of road infrastructure condition data for processing at a later stage. Thus, a crack detection algorithm is required which retains accuracy in a wide range of pavement conditions without being computationally intensive. To meet this research need, this thesis presents a fast and accurate crack detection algorithm. A minimal path based approach has been used to develop the crack detection algorithm. The technical approach consists of the following major steps: 1) Image preprocessing to remove isolated noise; 2) Preliminary crack segmentation to minimize false negatives; 3) Crack object generation and connection to remove false positives; and 4) Refinement of the crack segmentation through a minimal path search based procedure. The Crack Detection Algorithm Performance Evaluation System (CDA-PES) has been used to validate the performance of the proposed algorithm. This thesis also compares the proposed algorithm with the previous state-of-the-art algorithm. The proposed algorithm outperforms all previous algorithms tested using the CDA-PES. Additionally, the proposed algorithm achieves on average a 36 times faster computation speed than the existing state-of-the-art algorithm and a 58 times faster median computation speed. With a median processing time of 0.52 seconds for 0.65 megapixel images on a single CPU thread, this algorithm makes accurate, real-time processing viable. The research presented in this thesis contributes significantly towards more widespread adoption of safer and efficient automated road condition surveys. Advisors/Committee Members: Tsai, Yi-Chang (James) (advisor), Lai, James (advisor), Çatalyürek, Ümit V. (advisor).

Subjects/Keywords: Crack; Road infrastructure

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chatterjee, A. (2017). A fast and accurate automated pavement crack detection algorithm. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/60686

Chicago Manual of Style (16^th Edition):

Chatterjee, Anirban. “A fast and accurate automated pavement crack detection algorithm.” 2017. Masters Thesis, Georgia Tech. Accessed March 05, 2021. http://hdl.handle.net/1853/60686.

MLA Handbook (7^th Edition):

Chatterjee, Anirban. “A fast and accurate automated pavement crack detection algorithm.” 2017. Web. 05 Mar 2021.

Vancouver:

Chatterjee A. A fast and accurate automated pavement crack detection algorithm. [Internet] [Masters thesis]. Georgia Tech; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1853/60686.

Council of Science Editors:

Chatterjee A. A fast and accurate automated pavement crack detection algorithm. [Masters Thesis]. Georgia Tech; 2017. Available from: http://hdl.handle.net/1853/60686

University of Texas – Austin

6. -7106-8163. The transition from subsonic to supersonic cracks.

Degree: PhD, Physics, 2016, University of Texas – Austin

URL: http://hdl.handle.net/2152/46608

► We present the full analytical solution for steady-state in-plane crack motion in a brittle triangular lattice. This allows quick numerical evaluation of solutions for very… (more)

▼ We present the full analytical solution for steady-state in-plane crack motion in a brittle triangular lattice. This allows quick numerical evaluation of solutions for very large systems, facilitating comparisons with continuum fracture theory. Cracks that propagate faster than the Rayleigh wave speed have been thought to be forbidden in the continuum theory, but clearly exist in lattice systems. Using our analytical methods, we examine in detail the motion of atoms around a crack tip as crack speed changes from subsonic to supersonic. Subsonic cracks feature displacement fields consistent with a stress intensity factor. For supersonic cracks, the stress intensity factor disappears. Subsonic cracks are characterized by small-amplitude, high-frequency oscillations in the vertical displacement of an atom along the crack line, while supersonic cracks have large-amplitude, low-frequency oscillations. Thus, while supersonic cracks are no less physical than subsonic cracks, the connection between microscopic and macroscopic behavior must be made in a different way. This is one reason supersonic cracks in tension had been thought not to exist. In continuum fracture theory, the energy flowing into the crack tip becomes negative or imaginary for crack speeds faster than the Rayleigh wave speed. This would suggest that supersonic cracks are not physically allowed. In response to this, we study the energy flow in our supersonic solutions in the lattice. First, we construct an energy flux vector in the lattice analogous to the Poynting vector in electromagnetism. This allows us to calculate the energy flow at each atom in the lattice. We find that there is positive energy flux into the crack tip for both subsonic and supersonic solutions in the lattice. Advisors/Committee Members: Marder, Michael P., 1960- (advisor), Hazeltine, Richard (committee member), Matzner, Richard (committee member), Morrison, Philip (committee member), Ravi-Chandar, Krishnaswamy (committee member).

Subjects/Keywords: Fracture; Crack; Mechanics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

-7106-8163. (2016). The transition from subsonic to supersonic cracks. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/46608

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-7106-8163. “The transition from subsonic to supersonic cracks.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed March 05, 2021. http://hdl.handle.net/2152/46608.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-7106-8163. “The transition from subsonic to supersonic cracks.” 2016. Web. 05 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-7106-8163. The transition from subsonic to supersonic cracks. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2152/46608.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-7106-8163. The transition from subsonic to supersonic cracks. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/46608

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

7. Ferreira, Iara Flor Richwin. Crack : substância, corpos, dispositivo e vulnerabilidades. A psicanálise e a prática clínico-institucional com usuários de crack : Crack : substance, bodies, dispositive and vulnerabilities. Psychoanalysis and clinical-institutional practice with crack users.

Degree: Docteur es, Psychologie. Recherches en psychanalyse et psychopatologie, 2017, Sorbonne Paris Cité; Universidade de Brasília

URL: http://www.theses.fr/2017USPCC054

► Cette recherche découle de mon expérience clinique et institutionnelle dans le domaine des drogues. La problématique centrale s’appuie sur un questionnement sur la pratique psychanalytique… (more)

▼ Cette recherche découle de mon expérience clinique et institutionnelle dans le domaine des drogues. La problématique centrale s’appuie sur un questionnement sur la pratique psychanalytique avec des usagers de crack en situation de précarité, vulnérabilité et exclusion. L’objectif principal est d’examiner les processus subjectifs liés à l’usage problématique de crack, dans ses dimensions psychiques, corporelles, socio-politiques et culturelles. Je propose la notion de « dispositif du crack » pour examiner et réfléchir sur la trame des discours, interprétations, interventions, stratégies et soins tissée autour du phénomène du crack dans la contemporanéité brésilienne. Cette notion a mis en évidence le champ biopolitique dans lequel le problème du crack s’inscrit et l’entrecroisement entre les relations de pouvoir et de savoir sur cette drogue. En promouvant un rapprochement entre le domaine socio-politique et le domaine subjectif, la notion de « dispositif du crack » a également mis en évidence les processus de subjectivation et désubjectivation impliqués. L’analyse des potentiels effets et incidences subjectives résultants des situations d’exclusion et vulnérabilités multiples qui touchent la majorité des usagers de crack au Brésil a montré leur étroite articulation avec l’usage abusif de cette drogue, en ce qui concerne aussi bien les effets de cet usage prolongé que la constitution d’une certaine conjoncture subjective où l’usage de crack peut être interprété comme une « stratégie de survie » face à des « situations extrêmes de la subjectivité ». L’analyse d’un cas clinique a révélé que la stratégie toxique du patient était étroitement liée à son contexte de précarité et marginalisation et a explicité aussi les effets et les déploiements du « dispositif du crack » dans la dimension de la singularité du sujet et de son positionnement subjectif. L’analyse du cas clinique a également contribué apportant un questionnement et une réflexion sur la question du corps et l’usage abusif de crack, en révélant que, de manière associée à l’usage prolongé de cette substance, les processus sociopolitiques, les dynamiques de pouvoir, les discours hégémoniques et les inégalités et marginalisations s’infiltrent, marquent et conditionnent la pulsionnalité et la matérialité même des corps Cette question de la corporéité conjugue, condense et permet l’émergence des différentes dimensions qui s’entrelacent dans la complexité du phénomène du crack et qui ont été abordées tout au long de cette thèse : la puissance de la substance chimique et ses effets sur le corps et sur la subjectivité ; les questions subjectives et singulières ; les dynamiques pulsionnelles ; les déterminations et les processus socio-politiques ; les situations de précarité, vulnérabilité et exclusion ; les représentations et discours dominants ; et les stratégies et interventions mises en marche pour faire face à la question. Finalement, je présente les contours et les caractéristiques fondamentales de l’écoute, de la position clinique et des interventions… Advisors/Committee Members: Lindenmeyer, Cristina (thesis director), Celes, Luiz Augusto Monnerat (thesis director).

Subjects/Keywords: Dispositif du crack; Crack dispositif; Dispositivo do crack

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ferreira, I. F. R. (2017). Crack : substância, corpos, dispositivo e vulnerabilidades. A psicanálise e a prática clínico-institucional com usuários de crack : Crack : substance, bodies, dispositive and vulnerabilities. Psychoanalysis and clinical-institutional practice with crack users. (Doctoral Dissertation). Sorbonne Paris Cité; Universidade de Brasília. Retrieved from http://www.theses.fr/2017USPCC054

Chicago Manual of Style (16^th Edition):

Ferreira, Iara Flor Richwin. “Crack : substância, corpos, dispositivo e vulnerabilidades. A psicanálise e a prática clínico-institucional com usuários de crack : Crack : substance, bodies, dispositive and vulnerabilities. Psychoanalysis and clinical-institutional practice with crack users.” 2017. Doctoral Dissertation, Sorbonne Paris Cité; Universidade de Brasília. Accessed March 05, 2021. http://www.theses.fr/2017USPCC054.

MLA Handbook (7^th Edition):

Ferreira, Iara Flor Richwin. “Crack : substância, corpos, dispositivo e vulnerabilidades. A psicanálise e a prática clínico-institucional com usuários de crack : Crack : substance, bodies, dispositive and vulnerabilities. Psychoanalysis and clinical-institutional practice with crack users.” 2017. Web. 05 Mar 2021.

Vancouver:

Ferreira IFR. Crack : substância, corpos, dispositivo e vulnerabilidades. A psicanálise e a prática clínico-institucional com usuários de crack : Crack : substance, bodies, dispositive and vulnerabilities. Psychoanalysis and clinical-institutional practice with crack users. [Internet] [Doctoral dissertation]. Sorbonne Paris Cité; Universidade de Brasília; 2017. [cited 2021 Mar 05]. Available from: http://www.theses.fr/2017USPCC054.

Council of Science Editors:

Ferreira IFR. Crack : substância, corpos, dispositivo e vulnerabilidades. A psicanálise e a prática clínico-institucional com usuários de crack : Crack : substance, bodies, dispositive and vulnerabilities. Psychoanalysis and clinical-institutional practice with crack users. [Doctoral Dissertation]. Sorbonne Paris Cité; Universidade de Brasília; 2017. Available from: http://www.theses.fr/2017USPCC054

University of Plymouth

8. Lu, Yanwei. Full-field modelling of crack tip shielding phenomena.

Degree: PhD, 2011, University of Plymouth

URL: http://hdl.handle.net/10026.1/885

► The application of fracture mechanics to engineering design has provided significant advances in understanding of the causes and mechanisms of failure and crack growth. Despite… (more)

Subjects/Keywords: 620.110287; Fatigue Crack, Crack Closure, Crack Shielding, Digital Image Correlation, Photoelasticity

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lu, Y. (2011). Full-field modelling of crack tip shielding phenomena. (Doctoral Dissertation). University of Plymouth. Retrieved from http://hdl.handle.net/10026.1/885

Chicago Manual of Style (16^th Edition):

Lu, Yanwei. “Full-field modelling of crack tip shielding phenomena.” 2011. Doctoral Dissertation, University of Plymouth. Accessed March 05, 2021. http://hdl.handle.net/10026.1/885.

MLA Handbook (7^th Edition):

Lu, Yanwei. “Full-field modelling of crack tip shielding phenomena.” 2011. Web. 05 Mar 2021.

Vancouver:

Lu Y. Full-field modelling of crack tip shielding phenomena. [Internet] [Doctoral dissertation]. University of Plymouth; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10026.1/885.

Council of Science Editors:

Lu Y. Full-field modelling of crack tip shielding phenomena. [Doctoral Dissertation]. University of Plymouth; 2011. Available from: http://hdl.handle.net/10026.1/885

Mississippi State University

9. Ismonov, Shakhrukh. ANALYSIS OF FATIGUE CRACK GROWTH AND RESIDUAL STRESS.

Degree: PhD, Mechanical Engineering, 2011, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242011-191722/ ;

► The first part of this dissertation employs a three-dimensional elastic-plastic finite element model of straight-through crack growth to correlate four well-known methodologies characterizing… (more)

▼ The first part of this dissertation employs a three-dimensional elastic-plastic finite element model of straight-through crack growth to correlate four well-known methodologies characterizing fatigue crack closure. The compliance offset and the adjusted compliance ratio (ACR) are experimental methods, whereas the node displacement and the contact stress methods are numerical approaches. Evolutions of crack closure from all four methodologies are compared for a numerical model of a single edge-cracked tension specimen subjected to different levels of constant amplitude cyclic loading. In the second part, a detailed two dimensional stress analysis is conducted for a single pin-joint under plane stress conditions. This study investigates the influence of material nonlinearity, friction, and pre-existing residual stresses from cold-working process on the local radial and hoop stress levels around the pin-loaded hole. Next, the beneficial influence of cold working process is quantified by computing the Mode I stress intensity factors K_I for a single radial crack emanating from a side of a loaded hole. Two different loading configurations are considered: (a) an open hole in tension, (b) a pin-loaded hole. The stress intensity factors are computed using the J integral solutions and the weight functions specific to the crack configuration. The reductions in K_I values due to different levels of cold-working process are presented for a range of crack lengths. The final part of the research involves a numerical investigation of an on-line crack compliance technique that is used for experimental measurements of residual stress fields along the crack growth path. A finite rectangular sheet is considered with a single crack emanating from a side of a central hole. The residual stress field is introduced around the hole by cold-working simulation. As part of validation, the normalized residual stress intensity factors computed using the on-line crack compliance technique are compared with those from the J-integral approach for the case of elastic crack growth. The influence of crack tip plasticity on the performance of the on-line crack compliance technique is studied by comparing the solutions of the elastic and elastic-plastic crack growth models. Advisors/Committee Members: Steve R. Daniewicz (committee member), James C. Newman Jr. (committee member), Mohamad S. Qatu (committee member), Oliver J. Myers (committee member).

Subjects/Keywords: crack growth; crack closure; residual stress; on-line crack compliance technique; cold working

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ismonov, S. (2011). ANALYSIS OF FATIGUE CRACK GROWTH AND RESIDUAL STRESS. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242011-191722/ ;

Chicago Manual of Style (16^th Edition):

Ismonov, Shakhrukh. “ANALYSIS OF FATIGUE CRACK GROWTH AND RESIDUAL STRESS.” 2011. Doctoral Dissertation, Mississippi State University. Accessed March 05, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242011-191722/ ;.

MLA Handbook (7^th Edition):

Ismonov, Shakhrukh. “ANALYSIS OF FATIGUE CRACK GROWTH AND RESIDUAL STRESS.” 2011. Web. 05 Mar 2021.

Vancouver:

Ismonov S. ANALYSIS OF FATIGUE CRACK GROWTH AND RESIDUAL STRESS. [Internet] [Doctoral dissertation]. Mississippi State University; 2011. [cited 2021 Mar 05]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242011-191722/ ;.

Council of Science Editors:

Ismonov S. ANALYSIS OF FATIGUE CRACK GROWTH AND RESIDUAL STRESS. [Doctoral Dissertation]. Mississippi State University; 2011. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-03242011-191722/ ;

Iowa State University

10. Schiefelbein, Bryan. A crack closure model and its application to vibrothermography nondestructive evaluation.

Degree: 2017, Iowa State University

URL: https://lib.dr.iastate.edu/etd/15413

► Vibrothermography nondestructive evaluation (NDE) is in the early stages of research and development, and there exists uncertainty in the fundamental mechanisms and processes by which… (more)

▼ Vibrothermography nondestructive evaluation (NDE) is in the early stages of research and development, and there exists uncertainty in the fundamental mechanisms and processes by which heat generation occurs. Holland et al. [30] have developed a set of tools which simulate and predict the outcome of a vibrothermography inspection by breaking the inspection into three distinct processes: vibrational excitation, heat generation, and thermal imaging. The stage of vibrothermography which is not well understood is the process by which vibrations are converted to heat at the crack surface. It has been shown that crack closure and closure state impact the resulting heat generation [39; 55; 56]. Despite this, research into the link between partial crack closure and vibrothermography is limited [40; 55; 56]. This work seeks to rectify this gap in knowledge by modeling the behavior of a partially closed crack in response to static external loading and a dynamic vibration. The residual strains left by the plastic wake during fatigue crack growth manifest themselves as contact stresses acting at the crack surface interface. In response to an applied load below the crack opening stress, the crack closure state will evolve, but the crack will remain partially closed. The crack closure model developed in this work is based in linear elastic fracture mechanics (LEFM) and describes the behavior of a partially closed crack in response to a tensile external load and non-uniform closure stress distribution. The model builds on work by Fleck [18] to describe the effective length, crack opening displacement, and crack tip stress field for a partially closed crack. These quantities are solved for by first establishing an equilibrium condition which governs the effective or apparent length of the partially closed crack. The equilibrium condition states that, under any external or crack surface loading, the effective crack tip will be located where the effective stress intensity factor is zero. In LEFM, this is equivalent to saying that the effective crack tip is located where the stress singularity vanishes. If the closure stresses are unknown, the model provides an algorithm with which to solve for the distribution, given measurements of the effective crack length as a function of external load. Within literature, a number of heating mechanisms have been proposed as being dominant in vibrothermography. These include strain hysteresis, adhesion hysteresis, plastic flow, thermoelasticity, and sliding friction. Based on experimental observation and theory, this work eliminates strain hysteresis, thermoelasticity, and plastic flow as plausible heating mechanisms. This leaves friction and adhesion hysteresis as the only plausible mechanisms. Frictional heating is based on the classical Coulomb friction model, while adhesion hysteresis heating comes from irreversibility in surface adhesion. Adhesion hysteresis only satisfies the experimental observation that heating vanishes for high compressive loading if surface roughness and the instability of…

Subjects/Keywords: Crack closure; Crack opening; Fatigue crack; Fracture mechanics; Nondestructive evaluation; Vibrothermography; Aerospace Engineering; Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Schiefelbein, B. (2017). A crack closure model and its application to vibrothermography nondestructive evaluation. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/15413

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Schiefelbein, Bryan. “A crack closure model and its application to vibrothermography nondestructive evaluation.” 2017. Thesis, Iowa State University. Accessed March 05, 2021. https://lib.dr.iastate.edu/etd/15413.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Schiefelbein, Bryan. “A crack closure model and its application to vibrothermography nondestructive evaluation.” 2017. Web. 05 Mar 2021.

Vancouver:

Schiefelbein B. A crack closure model and its application to vibrothermography nondestructive evaluation. [Internet] [Thesis]. Iowa State University; 2017. [cited 2021 Mar 05]. Available from: https://lib.dr.iastate.edu/etd/15413.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Schiefelbein B. A crack closure model and its application to vibrothermography nondestructive evaluation. [Thesis]. Iowa State University; 2017. Available from: https://lib.dr.iastate.edu/etd/15413

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

11. El-Zeghayar, Maria. The Introduction of Crack Opening Stress Modeling into Strain-Life and Small Crack Growth Fatigue Analysis.

Degree: 2011, University of Waterloo

URL: http://hdl.handle.net/10012/5716

► The work in this thesis is concerned with the mechanics of the initiation and growth of small fatigue cracks from notches under service load histories.… (more)

▼ The work in this thesis is concerned with the mechanics of the initiation and growth of small fatigue cracks from notches under service load histories. Fatigue life estimates for components subjected to variable amplitude service loading are usually based on the same constant amplitude strain-life data used for constant amplitude fatigue life predictions. The resulting fatigue life estimates although they are accurate for constant amplitude fatigue, are always non conservative for variable amplitude load histories. Similarly fatigue life predictions based on small crack growth calculations for cracks growing from flaws in notches are non conservative when constant amplitude crack growth data are used. These non conservative predictions have, in both cases, been shown to be due to severe reductions in fatigue crack closure arising from large (overload or underload) cycles in a typical service load history. Smaller load cycles following a large near yield stress overload or underload cycle experience a much lower crack opening stress than that experienced by the same cycles in the reference constant amplitude fatigue tests used to produce design data. This reduced crack opening stress results in the crack remaining open for a larger fraction of the stress-strain cycle and thus an increase in the effective portion of the stress-strain cycle. The effective strain range is increased and the fatigue damage for the small cycles is greater than that calculated resulting in a non conservative fatigue life prediction. Previous work at Waterloo introduced parameters based on effective strain-life fatigue data and effective stress intensity versus crack growth rate data. Fatigue life calculations using these parameters combined with experimentally derived crack opening stress estimates give accurate fatigue life predictions for notched components subjected to variable amplitude service load histories. Information concerning steady state crack closure stresses, effective strain-life data, and effective stress intensity versus small crack growth rate data, are all obtained from relatively simple and inexpensive fatigue tests of smooth specimens in which periodic underloads are inserted into an otherwise constant amplitude load history. The data required to calibrate a variable amplitude fatigue crack closure model however, come from time consuming measurements of the return of crack closure levels for small cracks to a steady state level following an underload (large cracks for which crack closure measurements are easier to make cannot be used because at the high stress levels in notches under service loads a test specimen used would fracture). For low and moderately high hardness levels in metals crack growth and crack opening stress measurements have been made using a 900x optical microscope for the small crack length at which a test specimen can resist the high stress levels encountered when small cracks grow from notches. For very hard metals the crack sizes may be so small that the measurements must be made using a…

Subjects/Keywords: Crack Closure; Variable Amplitude Loading; Fatigue of steel; Crack Opening Stress; Crack Closure Stress

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

El-Zeghayar, M. (2011). The Introduction of Crack Opening Stress Modeling into Strain-Life and Small Crack Growth Fatigue Analysis. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/5716

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

El-Zeghayar, Maria. “The Introduction of Crack Opening Stress Modeling into Strain-Life and Small Crack Growth Fatigue Analysis.” 2011. Thesis, University of Waterloo. Accessed March 05, 2021. http://hdl.handle.net/10012/5716.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

El-Zeghayar, Maria. “The Introduction of Crack Opening Stress Modeling into Strain-Life and Small Crack Growth Fatigue Analysis.” 2011. Web. 05 Mar 2021.

Vancouver:

El-Zeghayar M. The Introduction of Crack Opening Stress Modeling into Strain-Life and Small Crack Growth Fatigue Analysis. [Internet] [Thesis]. University of Waterloo; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10012/5716.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

El-Zeghayar M. The Introduction of Crack Opening Stress Modeling into Strain-Life and Small Crack Growth Fatigue Analysis. [Thesis]. University of Waterloo; 2011. Available from: http://hdl.handle.net/10012/5716

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

12. Elfving, Filip. Potentials and limitations in finite element based crack propagation analysis using FRANC3D .

Degree: Chalmers tekniska högskola / Institutionen för mekanik och maritima vetenskaper, 2020, Chalmers University of Technology

URL: http://hdl.handle.net/20.500.12380/301244

► About 80% to 95% of all structural failures occur due to a fatigue mechanism1. Accurate fatigue assessment is therefore of great importance. This thesis focuses… (more)

Subjects/Keywords: Fatigue; crack propagation; FRANC3D; NASGRO; acture mechanics; SIF; M-integral; surface crack; embedded crack

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Elfving, F. (2020). Potentials and limitations in finite element based crack propagation analysis using FRANC3D . (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/301244

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Elfving, Filip. “Potentials and limitations in finite element based crack propagation analysis using FRANC3D .” 2020. Thesis, Chalmers University of Technology. Accessed March 05, 2021. http://hdl.handle.net/20.500.12380/301244.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Elfving, Filip. “Potentials and limitations in finite element based crack propagation analysis using FRANC3D .” 2020. Web. 05 Mar 2021.

Vancouver:

Elfving F. Potentials and limitations in finite element based crack propagation analysis using FRANC3D . [Internet] [Thesis]. Chalmers University of Technology; 2020. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/20.500.12380/301244.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Elfving F. Potentials and limitations in finite element based crack propagation analysis using FRANC3D . [Thesis]. Chalmers University of Technology; 2020. Available from: http://hdl.handle.net/20.500.12380/301244

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

13. Silva, Ana Luzia Medeiros Araújo da. Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva .

Degree: 2012, Universidade Federal de Pernambuco

URL: http://repositorio.ufpe.br/handle/123456789/11168

► O consumo de substâncias psicoativas vem aumentando ao longo dos tempos, principalmente quando relacionado às substâncias ilícitas. Dentre estas, destaca-se o crack, reconhecida como a… (more)

▼ O consumo de substâncias psicoativas vem aumentando ao longo dos tempos, principalmente quando relacionado às substâncias ilícitas. Dentre estas, destaca-se o crack, reconhecida como a mais agressiva e com maior poder de causar dependência, devido ao elevado potencial aditivo pela peculiar combinação de efeitos farmacológicos e socioculturais implicados em seu uso tornando-se assim, problema mundial de saúde pública. Os adolescentes, caracterizados pela vulnerabilidade intrínseca dessa fase, tornam-se propensos ao uso do crack. Frente ao aumento do seu uso em diferentes cidades do Brasil, esta dissertação está estruturada de acordo com as normas do Programa de Pós-Graduação em Enfermagem da Universidade Federal de Pernambuco - Mestrado Acadêmico com quatro capítulos, sendo um artigo de revisão integrativa e um artigo original. Apresenta como objetivo geral analisar o perfil de adolescentes e jovens usuários de crack à luz da Teoria da Intervenção Práxica e Enfermagem em Saúde Coletiva. Para o artigo de revisão foi realizada a busca de informações na Biblioteca Virtual em Saúde (BVS), resultando em 11 artigos selecionados segundo os critérios de inclusão estabelecidos e submetidos a posterior análise. Os resultados mostram a predominância de jovens entre os consumidores do crack, configurando problema social e de saúde pública, evidenciando a necessidade de redirecionamento das ações de saúde. O artigo original é um estudo descritivo, transversal, do tipo documental, com abordagem quantitativa. Os dados foram coletados nos prontuários dos dependentes de crack, em tratamento nos Caps-AD, Caps-Transtorno e Caps-Infantil do município de Camaragibe/PE.. A coleta de informações foi realizada por meio de um formulário estruturado, adaptado a partir do documento usado pelo serviço para registro das admissões e acompanhamentos clínicos com a totalidade dos casos de dependência do uso de crack entre adolescentes e adultos jovens. Os dados são apresentados sob a forma de médias e frequências, mostrando o perfil caracterizado principalmente por indivíduos do sexo masculino, baixas condições socioeconômicas e padrão grave de consumo da droga. Com base no perfil encontrado, foi elaborado plano de intervenção contendo ações educativas voltadas para adolescentes e jovens usuários de crack bem como àqueles que se encontram em situação de vulnerabilidade. ações preventivas e educativas voltadas para o público jovem podem se mostrar um recurso valioso para a diminuição da incidência do uso de crack nessa faixa etária. Essas ações podem, inclusive, iniciar em fases anteriores como, por exemplo, na infância, fazendo com que os futuros adolescentes e jovens reconheçam os malefícios que as substâncias psicoativas trazem ao seu organismo, às pessoas que lhe cercam e à sociedade. Advisors/Committee Members: Araújo, Ednaldo Cavalcante de (advisor), Frazão, Iracema da Silva (advisor).

Subjects/Keywords: Enfermagem; Cocaína Crack; Adolescentes

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Silva, A. L. M. A. d. (2012). Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva . (Thesis). Universidade Federal de Pernambuco. Retrieved from http://repositorio.ufpe.br/handle/123456789/11168

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Silva, Ana Luzia Medeiros Araújo da. “Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva .” 2012. Thesis, Universidade Federal de Pernambuco. Accessed March 05, 2021. http://repositorio.ufpe.br/handle/123456789/11168.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Silva, Ana Luzia Medeiros Araújo da. “Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva .” 2012. Web. 05 Mar 2021.

Vancouver:

Silva ALMAd. Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva . [Internet] [Thesis]. Universidade Federal de Pernambuco; 2012. [cited 2021 Mar 05]. Available from: http://repositorio.ufpe.br/handle/123456789/11168.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Silva ALMAd. Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva . [Thesis]. Universidade Federal de Pernambuco; 2012. Available from: http://repositorio.ufpe.br/handle/123456789/11168

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

14. SILVA, Ana Luzia Medeiros Araújo da. Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva .

Degree: 2012, Universidade Federal de Pernambuco

URL: http://repositorio.ufpe.br/handle/123456789/10691

► O consumo de substâncias psicoativas vem aumentando ao longo dos tempos, principalmente quando relacionado às substâncias ilícitas. Dentre estas, destaca-se o crack, reconhecida como a… (more)

▼ O consumo de substâncias psicoativas vem aumentando ao longo dos tempos, principalmente quando relacionado às substâncias ilícitas. Dentre estas, destaca-se o crack, reconhecida como a mais agressiva e com maior poder de causar dependência, devido ao elevado potencial aditivo pela peculiar combinação de efeitos farmacológicos e socioculturais implicados em seu uso tornando-se assim, problema mundial de saúde pública. Os adolescentes, caracterizados pela vulnerabilidade intrínseca dessa fase, tornam-se propensos ao uso do crack. Frente ao aumento do seu uso em diferentes cidades do Brasil, esta dissertação está estruturada de acordo com as normas do Programa de Pós-Graduação em Enfermagem da Universidade Federal de Pernambuco - Mestrado Acadêmico com quatro capítulos, sendo um artigo de revisão integrativa e um artigo original. Apresenta como objetivo geral analisar o perfil de adolescentes e jovens usuários de crack à luz da Teoria da Intervenção Práxica e Enfermagem em Saúde Coletiva. Para o artigo de revisão foi realizada a busca de informações na Biblioteca Virtual em Saúde (BVS), resultando em 11 artigos selecionados segundo os critérios de inclusão estabelecidos e submetidos a posterior análise. Os resultados mostram a predominância de jovens entre os consumidores do crack, configurando problema social e de saúde pública, evidenciando a necessidade de redirecionamento das ações de saúde. O artigo original é um estudo descritivo, transversal, do tipo documental, com abordagem quantitativa. Os dados foram coletados nos prontuários dos dependentes de crack, em tratamento nos Caps-AD, Caps-Transtorno e Caps-Infantil do município de Camaragibe/PE.. A coleta de informações foi realizada por meio de um formulário estruturado, adaptado a partir do documento usado pelo serviço para registro das admissões e acompanhamentos clínicos com a totalidade dos casos de dependência do uso de crack entre adolescentes e adultos jovens. Os dados são apresentados sob a forma de médias e frequências, mostrando o perfil caracterizado principalmente por indivíduos do sexo masculino, baixas condições socioeconômicas e padrão grave de consumo da droga. Com base no perfil encontrado, foi elaborado plano de intervenção contendo ações educativas voltadas para adolescentes e jovens usuários de crack bem como àqueles que se encontram em situação de vulnerabilidade. ações preventivas e educativas voltadas para o público jovem podem se mostrar um recurso valioso para a diminuição da incidência do uso de crack nessa faixa etária. Essas ações podem, inclusive, iniciar em fases anteriores como, por exemplo, na infância, fazendo com que os futuros adolescentes e jovens reconheçam os malefícios que as substâncias psicoativas trazem ao seu organismo, às pessoas que lhe cercam e à sociedade. Advisors/Committee Members: ARAÚJO, Ednaldo Cavalcante de (advisor), FRAZÃO, Iracema da Silva (advisor).

Subjects/Keywords: Enfermagem; Cocaína Crack; Adolescentes

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

SILVA, A. L. M. A. d. (2012). Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva . (Thesis). Universidade Federal de Pernambuco. Retrieved from http://repositorio.ufpe.br/handle/123456789/10691

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

SILVA, Ana Luzia Medeiros Araújo da. “Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva .” 2012. Thesis, Universidade Federal de Pernambuco. Accessed March 05, 2021. http://repositorio.ufpe.br/handle/123456789/10691.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

SILVA, Ana Luzia Medeiros Araújo da. “Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva .” 2012. Web. 05 Mar 2021.

Vancouver:

SILVA ALMAd. Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva . [Internet] [Thesis]. Universidade Federal de Pernambuco; 2012. [cited 2021 Mar 05]. Available from: http://repositorio.ufpe.br/handle/123456789/10691.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

SILVA ALMAd. Perfil de adolescentes e jovens usuários de crack à luz da teoria da intervenção práxica de enfermagem em saúde coletiva . [Thesis]. Universidade Federal de Pernambuco; 2012. Available from: http://repositorio.ufpe.br/handle/123456789/10691

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

15. ACIOLI NETO, Manoel Lima. Os contextos de uso do crack: representações e práticas sociais entre usuários .

Degree: 2014, Universidade Federal de Pernambuco

URL: http://repositorio.ufpe.br/handle/123456789/10316

► O objetivo desse estudo foi compreender contextos de uso do crack, a partir da análise das práticas e representações sociais relacionadas, buscando o modo como… (more)

▼ O objetivo desse estudo foi compreender contextos de uso do crack, a partir da análise das práticas e representações sociais relacionadas, buscando o modo como se constroem nas redes interacionais de seus usuários. Para tanto, foram realizadas entrevistas entre 14 usuários de diferentes contextos e padrões de consumo. O consumo de crack é atualmente um tema de ampla repercussão pública, tratado como um problema social grave que necessita de intervenções urgentes. A ênfase dada ao problema é remetida a um determinismo farmacológico, responsável pela produção de efeitos individuais e sociais diversos, tais como a dependência e o envolvimento com a criminalidade, existindo poucas discussões acerca dos aspectos sociais e culturais envolvidos no fenômeno do consumo. As concepções predominantes sobre o assunto situam que o usuário da substância tende a perder o controle do consumo, voltando-se à compulsão de usá-la, desvinculando-se de suas atividades cotidianas, com prejuízos profissionais e pessoais, além de perda do contato com seus grupos sociais de pertença. Esses efeitos têm sido atribuídos à fissura que a droga pode provocar no usuário, considerada um fator crítico para o desenvolvimento do uso compulsivo e da dependência. Os dados foram analisados através de análise temática de conteúdo e sugerem que as representações encontradas nesses contextos situavam o crack como droga da destruição, responsável pelo fracasso de planos de vida, desconstrução familiar, carreira profissional, etc. Esse aspecto destruidor apareceu também no modo de consumir a droga, que implicava em episódios de ingestão intensa, com deterioração orgânica e prejuízos para a saúde. As práticas de cuidado no consumo se tornavam despercebidas, apesar de presentes, somente sendo focalizado o caráter nocivo da experiência. Diante dessa concepção, a dependência foi apresentada como um reforçador desse modo de lidar com a droga. Ao afirmar que se encontrava doente, dependente do crack, o usuário demonstrava não ter mais preocupações em mediar o consumo, tornando-se “escravo” da droga. Contudo, a experiência do consumo era sempre mediada por algum tipo de controle, mesmo quando o usuário considerava que a droga havia tomado conta de seu ser. Assim sendo, perante essa compreensão da dependência, os usuários consideravam que o envolvimento com a criminalidade era uma consequência do consumo do crack. Nesse âmbito, apesar dos usuários não se limitarem a realizar escolhas diante dessa ética do crime, as representações hegemônicas partilhadas em seus contextos de uso remetem essas características como verdades sobre o crack. Dessa forma, mesmo vivenciando outras experiências com a droga, acreditam que seu uso remete ao âmbito do prazer destrutivo, da impossibilidade de ação voluntária, na encarnação de uma figura de repulsa. As normas sociais vigentes na informalidade desses campos convocam os usuários a se tornarem dependentes, criminosos, incapazes de construir planos de vida. Nesse âmbito, os padrões de controle devem ser evidenciados, pois foram unânimes… Advisors/Committee Members: SANTOS, Maria de Fátima de Souza (advisor).

Subjects/Keywords: Crack; Drogas; Contexto; Representações Sociais

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APA (6^th Edition):

ACIOLI NETO, M. L. (2014). Os contextos de uso do crack: representações e práticas sociais entre usuários . (Thesis). Universidade Federal de Pernambuco. Retrieved from http://repositorio.ufpe.br/handle/123456789/10316

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

ACIOLI NETO, Manoel Lima. “Os contextos de uso do crack: representações e práticas sociais entre usuários .” 2014. Thesis, Universidade Federal de Pernambuco. Accessed March 05, 2021. http://repositorio.ufpe.br/handle/123456789/10316.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

ACIOLI NETO, Manoel Lima. “Os contextos de uso do crack: representações e práticas sociais entre usuários .” 2014. Web. 05 Mar 2021.

Vancouver:

ACIOLI NETO ML. Os contextos de uso do crack: representações e práticas sociais entre usuários . [Internet] [Thesis]. Universidade Federal de Pernambuco; 2014. [cited 2021 Mar 05]. Available from: http://repositorio.ufpe.br/handle/123456789/10316.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

ACIOLI NETO ML. Os contextos de uso do crack: representações e práticas sociais entre usuários . [Thesis]. Universidade Federal de Pernambuco; 2014. Available from: http://repositorio.ufpe.br/handle/123456789/10316

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

16. Johnson, Karl Andrew. Crack and concrete deck sealant performance.

Degree: MS, Civil Engineering, 2013, University of Minnesota

URL: http://purl.umn.edu/156707

►

University of Minnesota M.S. thesis. May 2013. Major: Civil Engineering. Advisors: Arturo E. Schultz and Catherine E. Wolfgram French. 1 computer file (PDF); viii, 184… (more)

Subjects/Keywords: Concrete; Corrosion; Crack; Sealant; Sealer

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APA (6^th Edition):

Johnson, K. A. (2013). Crack and concrete deck sealant performance. (Masters Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/156707

Chicago Manual of Style (16^th Edition):

Johnson, Karl Andrew. “Crack and concrete deck sealant performance.” 2013. Masters Thesis, University of Minnesota. Accessed March 05, 2021. http://purl.umn.edu/156707.

MLA Handbook (7^th Edition):

Johnson, Karl Andrew. “Crack and concrete deck sealant performance.” 2013. Web. 05 Mar 2021.

Vancouver:

Johnson KA. Crack and concrete deck sealant performance. [Internet] [Masters thesis]. University of Minnesota; 2013. [cited 2021 Mar 05]. Available from: http://purl.umn.edu/156707.

Council of Science Editors:

Johnson KA. Crack and concrete deck sealant performance. [Masters Thesis]. University of Minnesota; 2013. Available from: http://purl.umn.edu/156707

San Jose State University

17. Safi, Tasnuva. Application of Microbiological Crack Dating Technique for Mixed Biota Species on Non-porous Surfaces.

Degree: MS, Civil and Environmental Engineering, 2012, San Jose State University

URL: https://doi.org/10.31979/etd.q7km-q6ra ; https://scholarworks.sjsu.edu/etd_theses/4250

► An approach to quantify sparse biomass on construction materials was the main focus of this study. The purpose of this study was to verify… (more)

Subjects/Keywords: crack dating; crack's age

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APA (6^th Edition):

Safi, T. (2012). Application of Microbiological Crack Dating Technique for Mixed Biota Species on Non-porous Surfaces. (Masters Thesis). San Jose State University. Retrieved from https://doi.org/10.31979/etd.q7km-q6ra ; https://scholarworks.sjsu.edu/etd_theses/4250

Chicago Manual of Style (16^th Edition):

Safi, Tasnuva. “Application of Microbiological Crack Dating Technique for Mixed Biota Species on Non-porous Surfaces.” 2012. Masters Thesis, San Jose State University. Accessed March 05, 2021. https://doi.org/10.31979/etd.q7km-q6ra ; https://scholarworks.sjsu.edu/etd_theses/4250.

MLA Handbook (7^th Edition):

Safi, Tasnuva. “Application of Microbiological Crack Dating Technique for Mixed Biota Species on Non-porous Surfaces.” 2012. Web. 05 Mar 2021.

Vancouver:

Safi T. Application of Microbiological Crack Dating Technique for Mixed Biota Species on Non-porous Surfaces. [Internet] [Masters thesis]. San Jose State University; 2012. [cited 2021 Mar 05]. Available from: https://doi.org/10.31979/etd.q7km-q6ra ; https://scholarworks.sjsu.edu/etd_theses/4250.

Council of Science Editors:

Safi T. Application of Microbiological Crack Dating Technique for Mixed Biota Species on Non-porous Surfaces. [Masters Thesis]. San Jose State University; 2012. Available from: https://doi.org/10.31979/etd.q7km-q6ra ; https://scholarworks.sjsu.edu/etd_theses/4250

Texas A&M University

18. Hajjat, Jumanah Ahmad Mohammad. STUDY ON SOIL BEHAVIOR UNDER MULTIPLE WETTING AND DRYING CYCLES.

Degree: PhD, Civil Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/173979

► During thermal seasonal variations, expansive soils may exhibit increase in volume upon wetting (swell) and decrease in volume during drying (shrinkage). In this regard, it… (more)

▼ During thermal seasonal variations, expansive soils may exhibit increase in volume upon wetting (swell) and decrease in volume during drying (shrinkage). In this regard, it is essential to understand the variations in hydro-mechanical behavior of soils during wetting/drying cycles for evaluating the stability and sustainability of natural soils and engineering structures as well. Crack formation is a widespread natural phenomenon raised during evaporation process of water from fully or partially-saturated soils during dry seasons. Fundamental to understanding crack development in soils is twofold; first to determine the tensile strength under circumstances mimicking those in the field and second to track the motion of soil particles during multiple wetting and drying cycles. In most of the previous studies, the tensile strength was measured when external applied tensile loads produced failure in a soil tested under constant water content and matric suction. However, very little attention has been directed to study the impact of wetting/drying cycles on tensile strength incorporated with the evolution and propagation of cracks. The research herein has stemmed from the observation of crack propagation in some geotechnical structures when soils undergo successive drying and wetting cycles. Accordingly, this study was motivated by the assumption that crack propagation is owing to the decrease in tensile strength of soil over cycles. A novel approach was employed using a new innovative device for measuring the tensile strength of the soil subjected to multiple wetting/drying cycles similar to the field conditions. The determination of tensile strength was incorporated with tracking the motion of soil particles during cycles by utilizing the Digital Image Correlation (DIC) technique. The reduction of tensile strength was determined, and crack propagation was quantitively described and analyzed over cycles. The influences of soil interfaces and initial saturation conditions on shear strength and crack behavior of soil were also studied. It was revealed through this research that crack formation in soil is strongly related to the variations in the configurations of soil particles and stress state that occur during alternative shrinkage and swelling when exposed to drying and wetting, respectively. The findings generated by this study can be used to improve our understanding of crack mechanism in soils during cyclic wetting/drying processes. Advisors/Committee Members: Sanchez, Marcelo (advisor), Aubeny, Charles (committee member), Cha, Minsu (committee member), Abedi, Sara (committee member).

Subjects/Keywords: Tensile strength; desiccation crack; cycles

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APA (6^th Edition):

Hajjat, J. A. M. (2018). STUDY ON SOIL BEHAVIOR UNDER MULTIPLE WETTING AND DRYING CYCLES. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173979

Chicago Manual of Style (16^th Edition):

Hajjat, Jumanah Ahmad Mohammad. “STUDY ON SOIL BEHAVIOR UNDER MULTIPLE WETTING AND DRYING CYCLES.” 2018. Doctoral Dissertation, Texas A&M University. Accessed March 05, 2021. http://hdl.handle.net/1969.1/173979.

MLA Handbook (7^th Edition):

Hajjat, Jumanah Ahmad Mohammad. “STUDY ON SOIL BEHAVIOR UNDER MULTIPLE WETTING AND DRYING CYCLES.” 2018. Web. 05 Mar 2021.

Vancouver:

Hajjat JAM. STUDY ON SOIL BEHAVIOR UNDER MULTIPLE WETTING AND DRYING CYCLES. [Internet] [Doctoral dissertation]. Texas A&M University; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1969.1/173979.

Council of Science Editors:

Hajjat JAM. STUDY ON SOIL BEHAVIOR UNDER MULTIPLE WETTING AND DRYING CYCLES. [Doctoral Dissertation]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/173979

Texas A&M University

19. Bagnall, Dianna Kathleen. Testing a Mesopore and Matrix Model for Use on Shrink-Swell Soils.

Degree: MS, Soil Science, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/153946

► Void space caused by drying of shrink-swell soils forms desiccation cracks and mesopores which conduct water from the soil surface, influencing water redistribution and complicating… (more)

Subjects/Keywords: Vertisol; soil crack; mesopore

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APA (6^th Edition):

Bagnall, D. K. (2014). Testing a Mesopore and Matrix Model for Use on Shrink-Swell Soils. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/153946

Chicago Manual of Style (16^th Edition):

Bagnall, Dianna Kathleen. “Testing a Mesopore and Matrix Model for Use on Shrink-Swell Soils.” 2014. Masters Thesis, Texas A&M University. Accessed March 05, 2021. http://hdl.handle.net/1969.1/153946.

MLA Handbook (7^th Edition):

Bagnall, Dianna Kathleen. “Testing a Mesopore and Matrix Model for Use on Shrink-Swell Soils.” 2014. Web. 05 Mar 2021.

Vancouver:

Bagnall DK. Testing a Mesopore and Matrix Model for Use on Shrink-Swell Soils. [Internet] [Masters thesis]. Texas A&M University; 2014. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1969.1/153946.

Council of Science Editors:

Bagnall DK. Testing a Mesopore and Matrix Model for Use on Shrink-Swell Soils. [Masters Thesis]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/153946

Penn State University

20. Blass, Robert Anthony. LAMINATED WOODEN ARCHES REINFORCED WITH GLASS FIBER RODS .

Degree: 2011, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/11550

► The following research deals with the laboratory testing of laminated wooden arches unreinforced and reinforced with glass-fiber rods. An artificial crack was placed between laminations,… (more)

Subjects/Keywords: crack; arch; reinforcement; Wood

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APA (6^th Edition):

Blass, R. A. (2011). LAMINATED WOODEN ARCHES REINFORCED WITH GLASS FIBER RODS . (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/11550

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Blass, Robert Anthony. “LAMINATED WOODEN ARCHES REINFORCED WITH GLASS FIBER RODS .” 2011. Thesis, Penn State University. Accessed March 05, 2021. https://submit-etda.libraries.psu.edu/catalog/11550.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Blass, Robert Anthony. “LAMINATED WOODEN ARCHES REINFORCED WITH GLASS FIBER RODS .” 2011. Web. 05 Mar 2021.

Vancouver:

Blass RA. LAMINATED WOODEN ARCHES REINFORCED WITH GLASS FIBER RODS . [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Mar 05]. Available from: https://submit-etda.libraries.psu.edu/catalog/11550.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Blass RA. LAMINATED WOODEN ARCHES REINFORCED WITH GLASS FIBER RODS . [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/11550

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

21. Van Gestel, J.N. (author). Procedural Destruction of Objects for Computer Games.

Degree: 2011, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:704a6d3e-1a5a-4c98-9ed5-81038ab76a7a

►

Traditional content creation for computer games is a costly process. In particular, current techniques for authoring destructible behaviour are labour intensive and often limited to… (more)

▼

Traditional content creation for computer games is a costly process. In particular, current techniques for authoring destructible behaviour are labour intensive and often limited to a single object basis. We aim to create an intuitive approach which allows designers to visually define destructible behaviour for objects in a reusable manner, which can then be applied in real-time. First we present a short introduction into the way that destruction has been done in games for many years. To better understand the physical processes that are being replicated, we present some information on how destruction works in the real world, and the high level approaches that have developed to simulate these processes. Using criteria gathered from industry professionals, we survey previous research work and determine their usability in a game development context. The approach which suits these criteria best is then selected as the basis for the approach presented in this work. By examining commercial solutions the shortcomings of existing technologies are determined to establish a solution direction. To separate destructible behaviour from particular objects, we introduce the concept of destructible materials: where the material of an object usually defines the way an object looks, a destructible material will determine how it breaks. Destructible materials provide a reusable definition and intuitive way of designing and tweaking destructible behaviour of objects, which can then be applied in real-time. Using a prototype implementation we show the viability of the presented approach and how it extends previous research with reusability, making it more designer friendly and allowing the same destructible behaviour to be easily applied to different objects. While the prototype can only apply this destructible behaviour in real-time for simple cases, it still takes us a step in the right direction.

Media and Knowledge Engineering

Computer Graphics

Electrical Engineering, Mathematics and Computer Science

Advisors/Committee Members: Bidarra, R. (mentor).

Subjects/Keywords: Procedural; Destruction; Crack; Fracture

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APA (6^th Edition):

Van Gestel, J. N. (. (2011). Procedural Destruction of Objects for Computer Games. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:704a6d3e-1a5a-4c98-9ed5-81038ab76a7a

Chicago Manual of Style (16^th Edition):

Van Gestel, J N (author). “Procedural Destruction of Objects for Computer Games.” 2011. Masters Thesis, Delft University of Technology. Accessed March 05, 2021. http://resolver.tudelft.nl/uuid:704a6d3e-1a5a-4c98-9ed5-81038ab76a7a.

MLA Handbook (7^th Edition):

Van Gestel, J N (author). “Procedural Destruction of Objects for Computer Games.” 2011. Web. 05 Mar 2021.

Vancouver:

Van Gestel JN(. Procedural Destruction of Objects for Computer Games. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Mar 05]. Available from: http://resolver.tudelft.nl/uuid:704a6d3e-1a5a-4c98-9ed5-81038ab76a7a.

Council of Science Editors:

Van Gestel JN(. Procedural Destruction of Objects for Computer Games. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:704a6d3e-1a5a-4c98-9ed5-81038ab76a7a

University of Illinois – Urbana-Champaign

22. Hosseinisarani, Seyedehzahra. On mitigation of hydrogen embrittlement and theoretical modeling of hydrogen accelerated fatigue crack growth.

Degree: PhD, Mechanical Engineering, 2020, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/107950

► Hydrogen embrittlement and fatigue are two modes of structural materials failure for which mechanistic understanding is still lacking. In addition, it has been found experimentally… (more)

▼ Hydrogen embrittlement and fatigue are two modes of structural materials failure for which mechanistic understanding is still lacking. In addition, it has been found experimentally that concurrent cyclic loading and hydrogen gas exposure can lead to enhanced fatigue crack growth rates. This work aims to propose a methodology to mitigate failure of steels by hydrogen embrittlement under monotonic loading and develop a mechanistic model for fatigue crack growth in ductile materials. It has been suggested that hydrogen embrittlement of steels may be mitigated by introduction of hydrogen traps in the steel microstructure to suppress the accumulation of the hydrogen necessary for crack nucleation at fracture initiation sites. It has also been found experimentally that nano-scale vanadium carbides (VC) significantly improve the hydrogen embrittlement resistance of bainitic steel. To understand and quantify the effect of VC precipitates on hydrogen embrittlement, we analyze the re-partitioning of hydrogen among various trap states during cooling from high temperature and then during loading of a cracked test-piece at room temperature. For the case of hydrogen-accelerated fatigue crack growth, we first attempt to theoretically model fatigue crack propagation induced by alternating crack tip plastic blunting and re-sharpening in the mid-range of growth rates. The model is so designed that it relies on inputs from experiments that measure macroscopic material behavior, such as the uniaxial cyclic straining, and it can successfully reproduce the response in the Paris regime. The model is also used to investigate the dependence of fatigue crack growth on the hydrostatic constraint. We then explore the hydrogen effect on crack propagation under equilibrium conditions of hydrogen with material straining. The hydrogen effect is accounted for through the modification of the hardening response of the material according to the experimentally observed acceleration of the motion and generation of dislocations in the presence of hydrogen. Lastly, we investigate the constitutive response of materials in the presence of hydrogen under cyclic loading. To accomplish this, we expand on the Chaboche constitutive model which we calibrate using a sequence of experimental data from uniaxial strain-controlled cyclic loading tests and uniaxial stress-controlled ratcheting tests of a low carbon steel, JIS SM490YB, in the absence and presence of hydrogen. From the combined experimental data and calibrated Chaboche model, we may conclude that hydrogen decreases the yield stress and the amount of cyclic hardening. On the other hand, hydrogen increases ratcheting, the rate of cyclic hardening, and advances stronger recovery. Advisors/Committee Members: Sofronis, Petros (advisor), Sofronis, Petros (Committee Chair), Sehitoglu, Huseyin (committee member), Ertekin, Elif (committee member), Krogstad, Jessica A (committee member).

Subjects/Keywords: Fatigue crack growth; Hydrogen embrittlement

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APA (6^th Edition):

Hosseinisarani, S. (2020). On mitigation of hydrogen embrittlement and theoretical modeling of hydrogen accelerated fatigue crack growth. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/107950

Chicago Manual of Style (16^th Edition):

Hosseinisarani, Seyedehzahra. “On mitigation of hydrogen embrittlement and theoretical modeling of hydrogen accelerated fatigue crack growth.” 2020. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed March 05, 2021. http://hdl.handle.net/2142/107950.

MLA Handbook (7^th Edition):

Hosseinisarani, Seyedehzahra. “On mitigation of hydrogen embrittlement and theoretical modeling of hydrogen accelerated fatigue crack growth.” 2020. Web. 05 Mar 2021.

Vancouver:

Hosseinisarani S. On mitigation of hydrogen embrittlement and theoretical modeling of hydrogen accelerated fatigue crack growth. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2020. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2142/107950.

Council of Science Editors:

Hosseinisarani S. On mitigation of hydrogen embrittlement and theoretical modeling of hydrogen accelerated fatigue crack growth. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2020. Available from: http://hdl.handle.net/2142/107950

University of Minnesota

23. Johnson, Karl Andrew. Crack and concrete deck sealant performance.

Degree: MS, Civil Engineering, 2013, University of Minnesota

URL: http://purl.umn.edu/156707

► The research objective of this project was to define the current state-of-the-art regarding the use of bridge deck sealants and crack sealers to extend the… (more)

Subjects/Keywords: Concrete; Corrosion; Crack; Sealant; Sealer

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Johnson, K. A. (2013). Crack and concrete deck sealant performance. (Masters Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/156707

Chicago Manual of Style (16^th Edition):

Johnson, Karl Andrew. “Crack and concrete deck sealant performance.” 2013. Masters Thesis, University of Minnesota. Accessed March 05, 2021. http://purl.umn.edu/156707.

MLA Handbook (7^th Edition):

Johnson, Karl Andrew. “Crack and concrete deck sealant performance.” 2013. Web. 05 Mar 2021.

Vancouver:

Johnson KA. Crack and concrete deck sealant performance. [Internet] [Masters thesis]. University of Minnesota; 2013. [cited 2021 Mar 05]. Available from: http://purl.umn.edu/156707.

Council of Science Editors:

Johnson KA. Crack and concrete deck sealant performance. [Masters Thesis]. University of Minnesota; 2013. Available from: http://purl.umn.edu/156707

University of Kansas

24. Elmore, Alisha M. Design, Development, and Modeling of a Compact, Field-Grade Civil Infrastructure Crack Detector Device.

Degree: PhD, Civil, Environmental & Architectural Engineering, 2014, University of Kansas

URL: http://hdl.handle.net/1808/19573

► Currently the nation's aging bridge infrastructure is approaching and in some cases exceeding its initial design life averaging more than forty years. Under these conditions… (more)

▼ Currently the nation's aging bridge infrastructure is approaching and in some cases exceeding its initial design life averaging more than forty years. Under these conditions steel bridges are susceptible to fatigue cracks at stress ranges below their material yield strength. In order to evaluate the remaining service life of these structures under their current operating conditions, it is important to accurately locate and identify active cracks within the material. Early detection of cracks and defects within a structure can provide inspectors and bridge maintenance personnel with viable information that can be used in the design and selection of an appropriate retrofit or repair technique that can be used to extend the service life of the bridge structure. Bridge inspections are typically conducted every two years primarily using visual inspection techniques. The active crack sensing tool designed and analyzed in this study is based on the robust and high sensing capabilities of piezoceramic materials. This dissertation presents the analytical, computational, and experimental results of a novel approach to identifying and characterizing cracks in steel bridge structural components using a piezoceramic sensor. Using the newly designed Piezoelectric Active Crack Tip Sensor (PACTS) tool, it was possible to detect an active crack with an opening displacement of 0.056 mm [0.0022 in] could be sensed under dynamic loading conditions. By using a crack opening linear trend (COLT) analysis, the crack tip position could be located within 3 mm [1/8 in] without the use of correction or modification factors. The results of the research provide a foundation in establishing an inspection tool capable of identifying damage detection within an in-service structure. The identification of an active crack and the ability to locate the crack tip of a material provides bridge inspectors and maintenance personnel with valuable information related to the current bridge condition that could be used for maintenance, repair, or replacement of bridges structures in an effort to ensure the safe passage of people and goods across the nation. Advisors/Committee Members: Rolfe, Stanley T (advisor), Barrett, Ronald M (advisor), Rolfe, Stanley T (cmtemember), Barrett, Ronald M (cmtemember), Li, Jian (cmtemember), Diaz, Manuel A (cmtemember), Schrock, Steven D (cmtemember).

Subjects/Keywords: Civil engineering; Active Crack Opening; Bridge Inspection; Crack Detection; Crack Opening Displacement; Crack Tip Identification; PZT Sensor

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Elmore, A. M. (2014). Design, Development, and Modeling of a Compact, Field-Grade Civil Infrastructure Crack Detector Device. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/19573

Chicago Manual of Style (16^th Edition):

Elmore, Alisha M. “Design, Development, and Modeling of a Compact, Field-Grade Civil Infrastructure Crack Detector Device.” 2014. Doctoral Dissertation, University of Kansas. Accessed March 05, 2021. http://hdl.handle.net/1808/19573.

MLA Handbook (7^th Edition):

Elmore, Alisha M. “Design, Development, and Modeling of a Compact, Field-Grade Civil Infrastructure Crack Detector Device.” 2014. Web. 05 Mar 2021.

Vancouver:

Elmore AM. Design, Development, and Modeling of a Compact, Field-Grade Civil Infrastructure Crack Detector Device. [Internet] [Doctoral dissertation]. University of Kansas; 2014. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1808/19573.

Council of Science Editors:

Elmore AM. Design, Development, and Modeling of a Compact, Field-Grade Civil Infrastructure Crack Detector Device. [Doctoral Dissertation]. University of Kansas; 2014. Available from: http://hdl.handle.net/1808/19573

University of Minnesota

25. Munch, Jared. Field And Laboratory Evaluation of Asphalt Crack Sealant Performance.

Degree: MS, Civil Engineering, 2020, University of Minnesota

URL: http://hdl.handle.net/11299/215016

► Crack sealing on hot-mix asphalt (HMA) pavement roads is a pavement maintenance technique used to limit the intrusion of water into the pavement structure, and… (more)

Subjects/Keywords: Crack; Maintenance; Pavement; Preventive; Sealing

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APA (6^th Edition):

Munch, J. (2020). Field And Laboratory Evaluation of Asphalt Crack Sealant Performance. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/215016

Chicago Manual of Style (16^th Edition):

Munch, Jared. “Field And Laboratory Evaluation of Asphalt Crack Sealant Performance.” 2020. Masters Thesis, University of Minnesota. Accessed March 05, 2021. http://hdl.handle.net/11299/215016.

MLA Handbook (7^th Edition):

Munch, Jared. “Field And Laboratory Evaluation of Asphalt Crack Sealant Performance.” 2020. Web. 05 Mar 2021.

Vancouver:

Munch J. Field And Laboratory Evaluation of Asphalt Crack Sealant Performance. [Internet] [Masters thesis]. University of Minnesota; 2020. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/11299/215016.

Council of Science Editors:

Munch J. Field And Laboratory Evaluation of Asphalt Crack Sealant Performance. [Masters Thesis]. University of Minnesota; 2020. Available from: http://hdl.handle.net/11299/215016

University of Texas – Austin

26. Longshaw, Alistair Thornton. Development of end-region cracks in pretensioned concrete I-girders employing 0.7-in. diameter strands.

Degree: MSin Engineering, Civil Engineering, 2018, University of Texas – Austin

URL: http://hdl.handle.net/2152/68151

► Although 0.5- and 0.6-in. diameter strands are commonly used in the prestressing industry, there is a growing interest in the implementation of 0.7-in. diameter strands.… (more)

▼ Although 0.5- and 0.6-in. diameter strands are commonly used in the prestressing industry, there is a growing interest in the implementation of 0.7-in. diameter strands. However, the greater prestressing force induced poses several potential implications, particularly when the strands are placed on a 2- by 2-in. grid. One such issue is end-region cracking, an occurrence that is common in pretensioned girders, regardless of strand size. These cracks tend to grow in width, length, and number over time due to time-dependent effects such as shrinkage or creep. Additionally, the cracks tend to close under an applied load when placed in a service-state condition. End-region crack widths are often used to evaluate the condition of pretensioned girders, so a thorough understanding of the development of these cracks is essential to applying crack width criteria appropriately. A multifaceted experimental program was conducted at the Ferguson Structural Engineering Laboratory at the University of Texas at Austin. A series of seven Texas bulb-tee girders employing 0.7-in. diameter strands was fabricated, monitored, and load tested under shear-critical conditions. The end-region cracks of three specimens were measured immediately after prestress transfer and monitored for at least 28 days, showing that the crack widths grew significantly over time. This growth corresponded closely with the shrinkage strain measured at midspan of each girder, indicating that shrinkage is the primary cause of end-region crack growth. A significant amount of transverse reinforcement is placed in end-regions to restrict cracks immediately after prestress transfer, but this same reinforcement also provides a large amount of restraint against concrete shrinkage, exacerbating crack growth. End-region cracks were also measured during the shear-critical load test for two specimens. Although they closed in a linear manner, they were not completely closed at an expected service load. At ultimate load, the cracks never closed entirely, as the imperfect concrete surfaces bore against each other shortly after initial diagonal shear cracking. Based on both of these findings, future end-region crack widths can be more accurately predicted from any point in the lifespan of a pretensioned girder, allowing for more appropriate applications of permissible crack width limits. Advisors/Committee Members: Bayrak, Oguzhan, 1969- (advisor), Hrynyk, Trevor (advisor).

Subjects/Keywords: 0.7-in. strands; Prestressed concrete; End-region crack; Time-dependent; Service load; Crack opening; Crack closure; Crack development

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APA (6^th Edition):

Longshaw, A. T. (2018). Development of end-region cracks in pretensioned concrete I-girders employing 0.7-in. diameter strands. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/68151

Chicago Manual of Style (16^th Edition):

Longshaw, Alistair Thornton. “Development of end-region cracks in pretensioned concrete I-girders employing 0.7-in. diameter strands.” 2018. Masters Thesis, University of Texas – Austin. Accessed March 05, 2021. http://hdl.handle.net/2152/68151.

MLA Handbook (7^th Edition):

Longshaw, Alistair Thornton. “Development of end-region cracks in pretensioned concrete I-girders employing 0.7-in. diameter strands.” 2018. Web. 05 Mar 2021.

Vancouver:

Longshaw AT. Development of end-region cracks in pretensioned concrete I-girders employing 0.7-in. diameter strands. [Internet] [Masters thesis]. University of Texas – Austin; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2152/68151.

Council of Science Editors:

Longshaw AT. Development of end-region cracks in pretensioned concrete I-girders employing 0.7-in. diameter strands. [Masters Thesis]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/68151

University of Texas – Austin

27. Buddhavarapu, Prasad Naga Venkata Siva Rama. CAM mix design with local aggregates.

Degree: MSin Engineering, Civil Engineering, 2011, University of Texas – Austin

URL: http://hdl.handle.net/2152/ETD-UT-2011-12-4801

► Crack Attenuating Mix (CAM) is relatively a new asphalt mixture type used by the Texas Department of Transportation (TxDOT). These mixtures are fine graded, designed… (more)

▼ Crack Attenuating Mix (CAM) is relatively a new asphalt mixture type used by the Texas Department of Transportation (TxDOT). These mixtures are fine graded, designed using relatively small stone sized aggregates and screenings with a high asphalt content, specifically for retarding the reflective cracking in thin asphalt overlays without sacrificing rutting resistance. The main goal of this study is to promote the use of local aggregates in CAM design. In order to achieve the goal, the development of a mix design procedure and aggregate quality guidelines for CAM design with local aggregates are essential. Several aggregate sources were identified and characterized in terms of their frictional, strength, and durability properties. A refined mix design procedure is recommended using a Superpave gyratory compactor with the capability to measure shear stress during compaction. The emphasis was on preventing rutting and flushing resulting from overfilling of binder in these mixtures, which was observed during compaction by consistent shear failures. The Hamburg Wheel Tracking Device (HWTD) was used for performance evaluation of rutting, whereas the Overlay Tester (OT) was used for cracking evaluation. It is hypothesized that current performance criteria in terms of HWTD and OT are too severe for being applicable to CAM mixes with local aggregates. A modification in HWTD failure criterion is recommended and is used in developing new aggregate guidelines. A correlation analysis was conducted relating aggregate properties and CAM performance in rutting and cracking. Finally, aggregate quality guidelines were developed for CAM using local aggregates based on the correlation study. The mix design recommendations as well as aggregate guidelines and quality criteria provided in the report are based on laboratory investigations and field validation of these is strongly recommended before implementation. Advisors/Committee Members: Prozzi, Jorge Alberto (advisor), Smit, Andre D. (committee member).

Subjects/Keywords: Crack attenuating mixes; Local aggregates

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APA (6^th Edition):

Buddhavarapu, P. N. V. S. R. (2011). CAM mix design with local aggregates. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2011-12-4801

Chicago Manual of Style (16^th Edition):

Buddhavarapu, Prasad Naga Venkata Siva Rama. “CAM mix design with local aggregates.” 2011. Masters Thesis, University of Texas – Austin. Accessed March 05, 2021. http://hdl.handle.net/2152/ETD-UT-2011-12-4801.

MLA Handbook (7^th Edition):

Buddhavarapu, Prasad Naga Venkata Siva Rama. “CAM mix design with local aggregates.” 2011. Web. 05 Mar 2021.

Vancouver:

Buddhavarapu PNVSR. CAM mix design with local aggregates. [Internet] [Masters thesis]. University of Texas – Austin; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2152/ETD-UT-2011-12-4801.

Council of Science Editors:

Buddhavarapu PNVSR. CAM mix design with local aggregates. [Masters Thesis]. University of Texas – Austin; 2011. Available from: http://hdl.handle.net/2152/ETD-UT-2011-12-4801

Colorado School of Mines

28. Nicco, Marion. Rock fracturing under microwave irradiation: development of analytical methods and investigation of the contribution of bound water.

Degree: PhD, Mining Engineering, 2019, Colorado School of Mines

URL: http://hdl.handle.net/11124/173993

► Microwave irradiation has been considered as a potential method for weakening rock in mining and civil engineering applications. Most rocks in Earth’s crust are predominantly… (more)

▼ Microwave irradiation has been considered as a potential method for weakening rock in mining and civil engineering applications. Most rocks in Earth’s crust are predominantly composed of silicate minerals, which are weak microwave absorbers, and the behavior of these rocks under microwave irradiation is not completely understood. This contribution examines the mineralogical and textural controls governing microwave-induced cracking in granites and the influence of the presence of hydrated minerals. A review of existing methods to characterize cracks indicated that there is no single method that provides comprehensive data on crack location, morphology, mineralogy, textural controls, and reduction of rock strength. Therefore this study developed an integrated suite of methods to assess cracks. Mechanical properties are quantified using relative P-wave velocity measurements and Uniaxial Compressive Strength tests. The morphology of microwave-induced cracks is assessed using new micro-computed tomography and 3D imaging tools. The mineralogical association of cracks is quantitatively described using a combination of optical microscopy, Scanning Electron Microscopy, automated mineralogy, and point counting. Results show that contrary to hypotheses presented in the literature, the color, water, or iron content of constituent minerals cannot be used to predict the microwave behavior of a rock. The texture of the rock is an important governing factor. Coarse grained rocks develop complex networks of narrow cracks whereas fine grained rocks will develop few wider cracks. Fine pre-existing weaknesses in granite do not appear to be affected by microwave irradiation and are easily discernable from microwave-induced damage. Adjacent mineral grains with contrasting properties (microwaving, thermal, physical or chemical) appear to be critical to the development of cracks. If microwave technology is applied to rocks made up of minerals that are weak microwave absorbers, the ideal candidates constitute coarse grained (1-5 mm) rocks containing randomly disseminated minerals with contrasting properties. This includes granites, granodiorites, diorites, and gabbros, conglomerates, breccias, coarse sandstones, and metamorphic rocks without small-scale fabrics. Granite hosted ore deposits such as porphyry copper, certain skarn (tin, tungsten, and molybdenum), epithermal deposits, intrusion-related gold, and rare earth element-bearing deposits and IOCG deposits hosted in breccias could also be viable candidates. Advisors/Committee Members: Holley, Elizabeth A. (advisor), Pfaff, Katharina (committee member), Hartlieb, Philipp (committee member), Kaunda, Rennie (committee member), Nelson, Priscilla P. (committee member).

Subjects/Keywords: fracture; microwave; crack; mineralogy; microscopy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nicco, M. (2019). Rock fracturing under microwave irradiation: development of analytical methods and investigation of the contribution of bound water. (Doctoral Dissertation). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/173993

Chicago Manual of Style (16^th Edition):

Nicco, Marion. “Rock fracturing under microwave irradiation: development of analytical methods and investigation of the contribution of bound water.” 2019. Doctoral Dissertation, Colorado School of Mines. Accessed March 05, 2021. http://hdl.handle.net/11124/173993.

MLA Handbook (7^th Edition):

Nicco, Marion. “Rock fracturing under microwave irradiation: development of analytical methods and investigation of the contribution of bound water.” 2019. Web. 05 Mar 2021.

Vancouver:

Nicco M. Rock fracturing under microwave irradiation: development of analytical methods and investigation of the contribution of bound water. [Internet] [Doctoral dissertation]. Colorado School of Mines; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/11124/173993.

Council of Science Editors:

Nicco M. Rock fracturing under microwave irradiation: development of analytical methods and investigation of the contribution of bound water. [Doctoral Dissertation]. Colorado School of Mines; 2019. Available from: http://hdl.handle.net/11124/173993

NSYSU

29. Chou, Hui-chi. Fatigue Fracture and Residual Life of Inclined Single-edge-cracked Ti/APC-2 Hybrid Composite Laminates.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2015, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0626115-110709

► This thesis aims to investigate the mechanical properties and fatigue characteristics with various crack length and different inclined angles of Ti/APC-2 hybrid composite laminates due… (more)

▼ This thesis aims to investigate the mechanical properties and fatigue characteristics with various crack length and different inclined angles of Ti/APC-2 hybrid composite laminates due to the tensile tests and fatigue tests. From the empirical data of tensile and fatigue tests, we obtain the important results as follows. First, the value of KI is decreased with the increase of inclined angles, where is the value of KII is maximal when the inclined angle is 45ï¾. Second, the shorter the cracks, the faster residual strength declines; and so on. Third, the value of stress intensity factor is increased with the finite width function , F(a/w) .Finally, the inclined angles are, the fatigue residual life of the longer crack length (6.0mm) is generally better than other crack length(1.5mm,3.0mm) specimens. The load-displacement diagrams of various crack length and different inclined angles specimens after the static tensile tests were plotted. In fatigue tests, were adopted the constant stress amplitude tension-tension cyclic tests, and the load-control mode at a sinusoidal loading wave with frequency of 5Hz and stress ratio R=0.1. From fatigue tests we obtained fatigue data, and plotted the load vs. cycles diagrams with different inclined single-edged cracks. The Ti/APC-2 laminates were three-layered laminates, with a piece of 0.55 mm thickness APC-2 lay-ups covered by two pieces of 0.5 mm titanium alloy sheets. APC-2 laminates were stacked according to cross-ply [0/90]s sequences. Using chromic acid anodic method to surface treat titanium, the chromic acid anodic method can perfectly bond the titanium sheets and APC-2. The curing process were used to fabricate Ti/APC-2 hybrid composite laminates.The inclined single-edged cracks were cut by electrical discharge machine , the crack lengths were 1.5, 3.0, 6.0 mm and the inclined angles were 15ï¾,30ï¾,45ï¾. And the MTS 810 material testing machine was used to conduct all the static tensile tests and fatigue tests. Advisors/Committee Members: Huang-Kuang Kung (chair), Ming-Hwa R Jen (committee member), Wei-Chih Lin (chair).

Subjects/Keywords: Titanium; APC-2; Single-Edged crack; Inclined crack; Fatigue; Tension

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APA (6^th Edition):

Chou, H. (2015). Fatigue Fracture and Residual Life of Inclined Single-edge-cracked Ti/APC-2 Hybrid Composite Laminates. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0626115-110709

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chou, Hui-chi. “Fatigue Fracture and Residual Life of Inclined Single-edge-cracked Ti/APC-2 Hybrid Composite Laminates.” 2015. Thesis, NSYSU. Accessed March 05, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0626115-110709.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chou, Hui-chi. “Fatigue Fracture and Residual Life of Inclined Single-edge-cracked Ti/APC-2 Hybrid Composite Laminates.” 2015. Web. 05 Mar 2021.

Vancouver:

Chou H. Fatigue Fracture and Residual Life of Inclined Single-edge-cracked Ti/APC-2 Hybrid Composite Laminates. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Mar 05]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0626115-110709.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chou H. Fatigue Fracture and Residual Life of Inclined Single-edge-cracked Ti/APC-2 Hybrid Composite Laminates. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0626115-110709

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

30. Almeida, Camila Souza de. Determinantes intrapessoais e interpessoais do processo de recaída em usuários de crack.

Degree: Mestrado, Enfermagem Psiquiátrica, 2015, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/22/22131/tde-04092015-160809/ ;

►

O crack, subproduto da cocaína, introduzida na década de 80 no Brasil, é um potente estimulador do Sistema Nervoso Central (SNC), desde a sua introdução… (more)

▼

O crack, subproduto da cocaína, introduzida na década de 80 no Brasil, é um potente estimulador do Sistema Nervoso Central (SNC), desde a sua introdução no país, verificou-se que os efeitos no convívio social e familiar do usuário são quase imediatos, levando a sociedade e o estado a terem uma preocupação maior com o seu uso e controle. Devido à magnitude dos efeitos da abstinência das substâncias psicoativas (no caso o crack), a recaída apareceu como um fator comum no cotidiano dos usuários, para analisar esse fato se propôs na década de 70 um modelo de tratamento denominado Prevenção de Recaída (PR), baseado no modelo compensatório (Terapia cognitivo-comportamental) em que não há julgamento ou atribuição de culpa ao indivíduo pelo uso da droga, mas o leva à reflexão sobre seus atos e a se responsabilizar pelas mudanças de comportamento. Assim o objetivo desse estudo foi identificar os determinantes intrapessoais e interpessoais do processo de recaída em usuários de crack, além de identificar o perfil sociodemográfico, o inicio do uso e padrão de uso de crack e outras drogas (lícitas e ilícitas). Trata-se de um estudo qualitativo de teor descritivo. A pesquisa ocorreu em um CAPS ad II em uma cidade do interior de Minas Gerais e a amostra foi de conveniência. Foram realizadas entrevistas semi- estruturas em duas etapas, com intervalo de três meses cada uma com os mesmos participantes, foi aplicada a análise de conteúdo no tratamento dos dados qualitativos. Os dados sociodemográficos concordaram com a literatura nacional; exceto no que tange a média de idade. O início do consumo de drogas ocorreu com o uso de drogas lícitas na adolescência e a relação dos usuários de crack com as demais SPA (lícitas e ilícitas) mostrou-se ambivalente, não sendo reconhecidas como \"drogas\", particularmente o álcool, percebido também como gatilho ou porta de entrada para o uso do crack, já as recaídas apareceram atreladas a fatores intrapessoais e interpessoais, sendo que eles se retroalimentam, criando um círculo vicioso. O estudo mostrou que, no atendimento ao usuário de crack deve-se trabalhar com todas as facetas do uso ou do motivo da recaída, e identificar juntamente com o usuário, os gatilhos de recaída e a rede de apoio de que dispõe, fortalecendo-o na busca de mecanismos de autocontrole do uso

The crack, a byproduct of cocaine, introduced in the 80s in Brazil, is a potent stimulator of the central nervous system (CNS), since its introduction in the country, it was found that the effects on social and family life of the user are almost immediate , leading the society and the state to have a major concern with its use and control. Due to the magnitude of the effects of abstinence l of psychoactive substances (in this case crack), relapse appeared as a common factor in the daily lives of users, to analyze this fact was proposed in the 70\'s a model of treatment called Relapse Prevention (RP) based on the compensatory model (cognitive behavioral therapy) in which there is no…

Advisors/Committee Members: Luis, Margarita Antonia Villar.

Subjects/Keywords: Cocaína Crack; Cocaine Crack; Enfermagem; Nursing; Recaída; Relapse

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APA (6^th Edition):

Almeida, C. S. d. (2015). Determinantes intrapessoais e interpessoais do processo de recaída em usuários de crack. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/22/22131/tde-04092015-160809/ ;

Chicago Manual of Style (16^th Edition):

Almeida, Camila Souza de. “Determinantes intrapessoais e interpessoais do processo de recaída em usuários de crack.” 2015. Masters Thesis, University of São Paulo. Accessed March 05, 2021. http://www.teses.usp.br/teses/disponiveis/22/22131/tde-04092015-160809/ ;.

MLA Handbook (7^th Edition):

Almeida, Camila Souza de. “Determinantes intrapessoais e interpessoais do processo de recaída em usuários de crack.” 2015. Web. 05 Mar 2021.

Vancouver:

Almeida CSd. Determinantes intrapessoais e interpessoais do processo de recaída em usuários de crack. [Internet] [Masters thesis]. University of São Paulo; 2015. [cited 2021 Mar 05]. Available from: http://www.teses.usp.br/teses/disponiveis/22/22131/tde-04092015-160809/ ;.

Council of Science Editors:

Almeida CSd. Determinantes intrapessoais e interpessoais do processo de recaída em usuários de crack. [Masters Thesis]. University of São Paulo; 2015. Available from: http://www.teses.usp.br/teses/disponiveis/22/22131/tde-04092015-160809/ ;

Open Access Theses and Dissertations