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1.
Chantelot, Pierre.
Rebonds spéciaux de liquides : Special liquid rebounds.
Degree: Docteur es, Mécanique des fluides, 2018, Paris Saclay
URL: http://www.theses.fr/2018SACLX120 
► Ce travail de thèse s'articule autour de plusieurs variations sur le thème du rebond d'une goutte d'eau sur une surface non-mouillante. Nous engendrons des rebonds…
(more)
▼ Ce travail de thèse s'articule autour de plusieurs variations sur le thème du rebond d'une goutte d'eau sur une surface non-mouillante. Nous engendrons des rebonds spéciaux que nous caractérisons expérimentalement. Notre analyse de ces rebonds se concentre sur la mise en évidence des paramètres et des phénomènes physiques contrôlant leur extension spatiale et temporelle, deux quantités qu'il est important de comprendre tant d'un point de vue fondamental qu'appliqué. Nous étudions, dans un premier temps, les effets de la géométrie du substrat sur le rebond d'une goutte d'eau. Nous montrons qu'une modification locale, l'ajout d'une macrotexture ponctuelle, crée un mécanisme de rebond nouveau que nous associons à une réduction du temps de contact d'un facteur 2. Nous réalisons également des impacts sur des substrats coniques et sphériques en mettant en avant les différences et les similitudes avec les impacts sur une surface plane. Dans un second temps, nous nous intéressons aux effets créés par un substrat mobile. Nous étudions l'impact de gouttes sur des surfaces déformables et comprenons comment l'échelle de temps du rebond est influencée par une interaction entre celle de la goutte et celle du substrat. Nous discutons aussi l'influence de la déformation du substrat sur le splash. Notre étude de l'influence du mouvement s'est poursuivie en utilisant des surfaces rigides auxquelles nous pouvons imposer un déplacement vertical. En soumettant des gouttes initialement au repos à un mouvement impulsionnel, nous engendrons de surprenantes cavités coniques dont nous modélisons la dynamique. Cette expérience permet de faire un constat étonnant, la faible adhésion des surfaces superhydrophobes est nécessaire à l'obtention des cavités. Nous réalisons des impacts sur une surface dont le déplacement peut-être déclenché au moment du contact entre le liquide et le solide à l’aide du signal provenant d’un capteur de force de type MEMS. Nous atteignons des temps de contact extrêmement réduits, de l’ordre de 20% de celui observé sur le même substrat sans mouvement. Enfin, nous modifions le liquide et non le substrat. Nous montrons que des gouttes jusqu'à 200 fois plus visqueuses que l'eau peuvent rebondir sur des matériaux superhydrophobes.
This thesis revolves around the ability of liquid drops to bounce off superhydrophobic materials. We generate special rebounds and characterize them experimentally.We focus on finding the relevant physical phenomena to describe the temporal and spatial extension of such events, both quantities being of importance from the fundamental and applied point of vue. First, we study the influence of the susbtrate geometry. We modify the surface locally, by introducing a singular macrotexture, and show that it leads to a new bouncing mechanism that shortens the contact time by a factor typically 2. We also modify the substrate at the size of the drop. We perform impacts on non wetting cones and spheres and compare them to what is observed on a flat surface. Then, we study the effect of…
Advisors/Committee Members: Clanet, Christophe (thesis director), Quéré, David (thesis director).
Subjects/Keywords: Superhydrophobie; Rebond; Macrotexture; Superhydrophobicity; Bouncing; Macrotexture; 532
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APA (6th Edition):
Chantelot, P. (2018). Rebonds spéciaux de liquides : Special liquid rebounds. (Doctoral Dissertation). Paris Saclay. Retrieved from http://www.theses.fr/2018SACLX120
Chicago Manual of Style (16th Edition):
Chantelot, Pierre. “Rebonds spéciaux de liquides : Special liquid rebounds.” 2018. Doctoral Dissertation, Paris Saclay. Accessed September 23, 2019.
http://www.theses.fr/2018SACLX120.
MLA Handbook (7th Edition):
Chantelot, Pierre. “Rebonds spéciaux de liquides : Special liquid rebounds.” 2018. Web. 23 Sep 2019.
Vancouver:
Chantelot P. Rebonds spéciaux de liquides : Special liquid rebounds. [Internet] [Doctoral dissertation]. Paris Saclay; 2018. [cited 2019 Sep 23].
Available from: http://www.theses.fr/2018SACLX120.
Council of Science Editors:
Chantelot P. Rebonds spéciaux de liquides : Special liquid rebounds. [Doctoral Dissertation]. Paris Saclay; 2018. Available from: http://www.theses.fr/2018SACLX120
Virginia Tech
2.
Keeney, Jacquelyn Nicole.
Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices.
Degree: MS, Civil and Environmental Engineering, 2017, Virginia Tech
URL: http://hdl.handle.net/10919/78721
► The purpose of this thesis was to assess the repeatability and reproducibility of two high-speed macrotexture measuring systems. The first portion of the study collected…
(more)
▼ The purpose of this thesis was to assess the repeatability and reproducibility of two high-speed
macrotexture measuring systems. The first portion of the study collected
macrotexture measurements using the two high-speed systems on the Virginia Smart Road facility and validated the reproducibility of the mean profile depth (MPD) measurements with reference CT Meter measurements. The various data sets were then compared with each other. The objective was to determine whether the two systems are collecting repeatable and reproducible data.
The analysis showed that the two high-speed systems investigated have good repeatability (0.105 mm for the Ames and 0.113 mm for the SCRIM) when measuring the average MPD of the sections investigated. The two systems produce measurements that are highly-correlated (Ames R2 = 0.9591 and SCRIM R2 = 0.9157) with the reference ones obtained with the CT Meter. While the Ames systems, with the data processed using the Virginia Tech filter, measures MPD values that are very close to those of the CT Meter, with a virtually zero systematic bias. The SCRIM obtains slightly lower readings. The differences are thought to be due to the filtering of the raw pavement elevation measurements used by the SCRIM processing software to eliminate dropout and spikes in the laser measurements.
Advisors/Committee Members: Flintsch, Gerardo W. (committeechair), Taheri, Saied (committee member), Katicha, Samer Wehbe (committee member).
Subjects/Keywords: Macrotexture; Network-Level; MPD; Repeatability; Reproducibility
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APA (6th Edition):
Keeney, J. N. (2017). Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/78721
Chicago Manual of Style (16th Edition):
Keeney, Jacquelyn Nicole. “Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices.” 2017. Masters Thesis, Virginia Tech. Accessed September 23, 2019.
http://hdl.handle.net/10919/78721.
MLA Handbook (7th Edition):
Keeney, Jacquelyn Nicole. “Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices.” 2017. Web. 23 Sep 2019.
Vancouver:
Keeney JN. Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices. [Internet] [Masters thesis]. Virginia Tech; 2017. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/10919/78721.
Council of Science Editors:
Keeney JN. Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices. [Masters Thesis]. Virginia Tech; 2017. Available from: http://hdl.handle.net/10919/78721
3.
Maeger, Kyle Franklin.
Enhancement of Network Level Macrotexture Measurement Practices through Deterioration Modeling and Comparison of Measurement Devices for Integration into Pavement Management Systems.
Degree: MS, Civil and Environmental Engineering, 2018, Virginia Tech
URL: http://hdl.handle.net/10919/86385
► This research sought to integrate measurement and prediction of surface macrotexture for use in pavement management systems. This was achieved through two experiments, the first…
(more)
▼ This research sought to integrate measurement and prediction of surface
macrotexture for use in pavement management systems. This was achieved through two experiments, the first modeled the behavior of a binder-rich stone matrix asphalt when subjected to traffic loading using a heavy vehicle simulator to report the effect on pavement
macrotexture. The second experiment compared high-speed
macrotexture measurement devices on a variety of surfaces and under various operating conditions. The change in
macrotexture due to traffic loading showed that as the cumulative load increased, the
macrotexture decreased due to bleeding on the pavement's surface. A regression model determined that, on average, the
macrotexture's root mean square (RMS) decreased 0.14 mm per million equivalent single axle load applied. A comparison of RMS and mean profile depth (MPD) outputs indicated that RMS was more sensitive to changes in
macrotexture due to bleeding. In comparing devices, pairwise device agreement was evaluated using a Limits of Agreement. The results demonstrate good repeatability for each of the devices tested. The agreement analysis showed that not all high-speed devices can be used interchangeably for all pavement surfaces. Data acquisition speed was found to be a factor in
macrotexture parameter calculation for two of the devices. The effect of speed was found to be worse on randomly textured surfaces than on transversely textured surfaces.
Advisors/Committee Members: Flintsch, Gerardo W. (committeechair), Katicha, Samer Wehbe (committee member), Heaslip, Kevin Patrick (committee member).
Subjects/Keywords: macrotexture; pavement; surface properties
…x29;) .................... 7
Figure 4 - States Collecting Network Level Macrotexture… …Project Level Macrotexture (Adapted from NCHRP (4)) .................. 9… …condition parameters
developed, surface macrotexture is one that is not widely collected or… …utilized in pavement
management systems (PMS) in the US.
The macrotexture of a road… …particular, the macrotexture influences key driver safety
issues including the friction of both wet…
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APA (6th Edition):
Maeger, K. F. (2018). Enhancement of Network Level Macrotexture Measurement Practices through Deterioration Modeling and Comparison of Measurement Devices for Integration into Pavement Management Systems. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/86385
Chicago Manual of Style (16th Edition):
Maeger, Kyle Franklin. “Enhancement of Network Level Macrotexture Measurement Practices through Deterioration Modeling and Comparison of Measurement Devices for Integration into Pavement Management Systems.” 2018. Masters Thesis, Virginia Tech. Accessed September 23, 2019.
http://hdl.handle.net/10919/86385.
MLA Handbook (7th Edition):
Maeger, Kyle Franklin. “Enhancement of Network Level Macrotexture Measurement Practices through Deterioration Modeling and Comparison of Measurement Devices for Integration into Pavement Management Systems.” 2018. Web. 23 Sep 2019.
Vancouver:
Maeger KF. Enhancement of Network Level Macrotexture Measurement Practices through Deterioration Modeling and Comparison of Measurement Devices for Integration into Pavement Management Systems. [Internet] [Masters thesis]. Virginia Tech; 2018. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/10919/86385.
Council of Science Editors:
Maeger KF. Enhancement of Network Level Macrotexture Measurement Practices through Deterioration Modeling and Comparison of Measurement Devices for Integration into Pavement Management Systems. [Masters Thesis]. Virginia Tech; 2018. Available from: http://hdl.handle.net/10919/86385
4.
Amaral da silva, Everton Sidnei.
Design, Technologie et Perception : Mise en relation du design sensoriel, sémantique et émotionnel avec la texture et les matériaux : Design, Technology and Perception : Definition of a linking model of emotional design with texture and materials.
Degree: Docteur es, Conception, 2016, Paris, ENSAM
URL: http://www.theses.fr/2016ENAM0063
► Ce travail de recherche a pour objectif général de proposer un modèle de mise en relation du design émotionnel avec la macrotexture et les matériaux…
(more)
▼ Ce travail de recherche a pour objectif général de proposer un modèle de mise en relation du design émotionnel avec la macrotexture et les matériaux pour aider les concepteurs à la sélection de finitions pour les produits industriels. Cette modélisation vise à valoriser le produit à travers l’exploration des mécanismes sensoriels, sémantiques et émotionnels, qui interviennent lors de la perception du produit par le consommateur. Le processus perceptif est ainsi pris en compte à travers différents modalités sensorielles de manière à enrichir le processus de conception. Le secteur d’application de notre recherche a été le secteur automobile, avec le produit « volant ». Ce produit a été analysé dans la catégorie Grand Public. Dans cette catégorie, les matériaux ont été analysés sur un ensemble de 7 différents modèles de volants avec une population française et brésilienne. Par ailleurs, différents paramètres techniques tels que, la dureté, la rugosité et la dissipation thermique, ont été pris en compte dans la mise en relation pour renforcer la communication entre les domaines du Design et l’Ingénierie.
This research has the overall goal to propose a model linking emotional design with macrotexture and materials to help designers in the selection of finishes for industrial products. This model aims to promote the product through the exploration of sensory, semantic and emotional mechanisms, involved in the perception of the product by the consumer. The perceptive process is thus considered through different sensory modalities to enrich the design process. The application sector of our research was the automotive sector, with the product "steering wheel". This product was analyzed in the General Public category. In this category, the materials were analyzed within a set of 7 different steering wheels models by a population of French and Brazilian users. Moreover, different technical parameters such as, hardness, roughness and heat dissipation have been taken into account in the linking to strengthen communication between the fields of Design and Engineering.
Advisors/Committee Members: Bouchard, Carole (thesis director), Kindlein Junior, Wilson (thesis director), Omhover, Jean-François (thesis director).
Subjects/Keywords: Sélection de matériaux; Texture tactile; Macrotexture; Interaction émotionnelle; Kansei engineering; Design émotionnel; Selection of materials; Tactile Texture; Macrotexture; Emotional interaction; Kansei engineering; Emotional design
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APA (6th Edition):
Amaral da silva, E. S. (2016). Design, Technologie et Perception : Mise en relation du design sensoriel, sémantique et émotionnel avec la texture et les matériaux : Design, Technology and Perception : Definition of a linking model of emotional design with texture and materials. (Doctoral Dissertation). Paris, ENSAM. Retrieved from http://www.theses.fr/2016ENAM0063
Chicago Manual of Style (16th Edition):
Amaral da silva, Everton Sidnei. “Design, Technologie et Perception : Mise en relation du design sensoriel, sémantique et émotionnel avec la texture et les matériaux : Design, Technology and Perception : Definition of a linking model of emotional design with texture and materials.” 2016. Doctoral Dissertation, Paris, ENSAM. Accessed September 23, 2019.
http://www.theses.fr/2016ENAM0063.
MLA Handbook (7th Edition):
Amaral da silva, Everton Sidnei. “Design, Technologie et Perception : Mise en relation du design sensoriel, sémantique et émotionnel avec la texture et les matériaux : Design, Technology and Perception : Definition of a linking model of emotional design with texture and materials.” 2016. Web. 23 Sep 2019.
Vancouver:
Amaral da silva ES. Design, Technologie et Perception : Mise en relation du design sensoriel, sémantique et émotionnel avec la texture et les matériaux : Design, Technology and Perception : Definition of a linking model of emotional design with texture and materials. [Internet] [Doctoral dissertation]. Paris, ENSAM; 2016. [cited 2019 Sep 23].
Available from: http://www.theses.fr/2016ENAM0063.
Council of Science Editors:
Amaral da silva ES. Design, Technologie et Perception : Mise en relation du design sensoriel, sémantique et émotionnel avec la texture et les matériaux : Design, Technology and Perception : Definition of a linking model of emotional design with texture and materials. [Doctoral Dissertation]. Paris, ENSAM; 2016. Available from: http://www.theses.fr/2016ENAM0063
5.
Amanda Cavalcante Rodrigues.
AvaliaÃÃo da influÃncia da granulometria na aderÃncia pneu-pavimento.
Degree: Master, 2013, Universidade Federal do Ceará
URL: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13702
;
► Uma dificuldade que acomete as empresas de construÃÃo pesada em relaÃÃo à seguranÃa viÃria à atingir valores mÃnimos de aderÃncia exigidos em campo para o…
(more)
▼ Uma dificuldade que acomete as empresas de construÃÃo pesada em relaÃÃo à seguranÃa viÃria à atingir valores mÃnimos de aderÃncia exigidos em campo para o revestimento de pavimentos. Valores mÃnimos de microtextura, ensaiados atravÃs do pÃndulo britÃnico, e faixas de macrotextura, ensaiadas pelo ensaio de mancha de areia, sÃo encontrados no Manual de RestauraÃÃo de Pavimentos AsfÃlticos do DNIT de 2006. Nas situaÃÃes onde esses parÃmetros ligados à aderÃncia sÃo controlados, o revestimento precisa ser reexecutado quando a micro e a macrotextura nÃo se aproximam do exigido pelas normas. Trata-se de um problema apenas observado durante a fase de construÃÃo, uma vez que nÃo se determina a aderÃncia em laboratÃrio, na fase de projeto. Pesquisas apontam que as mudanÃas nas propriedades dos agregados e na granulometria podem afetar a micro e a macrotextura da camada de rolamento. A fim de contribuir na questÃo da aderÃncia, buscando a previsÃo desse parÃmetro ainda indiretamente em laboratÃrio, objetivou-se desenvolver uma metodologia capaz de testar granulometrias para verificar o efeito das fraÃÃes dos materiais das peneiras nesta aderÃncia da superfÃcie do pavimento. A metodologia proposta consistiu em comparar a textura da massa asfÃltica compactada em campo e em laboratÃrio utilizando os ensaios de mancha de areia e de pÃndulo britÃnico. Objetivou-se, ainda, desenvolver um modelo capaz de predizer o valor de macrotextura da camada de rolamento atravÃs de granulometrias das misturas asfÃlticas estudadas. O modelo foi composto por dados de fraÃÃes retidas entre as peneiras nÂ40 e 3/8â. Os principais resultados obtidos levaram à conclusÃo de que a metodologia desenvolvida em laboratÃrio foi consistente no aspecto de microtextura entre campo e laboratÃrio. Em relaÃÃo ao modelo, houve uma correlaÃÃo considerada satisfatÃria, portanto, indicando o potencial da previsÃo da macrotextura ainda na fase de projeto a partir da granulometria a adotar.
A difficulty that affects pavement contractors regarding road safety is to achieve minimum values of surface friction required to the pavement in the field. Minimum values of microtexture tested through the British pendulum and ranges of macrotexture tested by the sand patch test are found in the DNIT Manual of Asphalt Pavements Restoration (2006). In situations where the friction parameters are controlled, oftentimes the pavement needs to be reexecuted when the micro and macrotexture do not meet the required values. This is a problem only observed during the construction phase as friction is not determined indirectly in the laboratory during the design phase. Research indicates that changes in the properties of the aggregates and the particle size can affect the microtexture and macrotexture of the surface course. In order to contribute to the topic of friction, seeking the prediction of this parameter in the laboratory, this work aimed to develop a methodology capable of evaluating gradations and the effect of the sieve fractions of materials in the of pavement surface friction.…
Advisors/Committee Members: VerÃnica Teixeira Franco Castelo Branco, Suelly Helena de AraÃjo Barroso, Liedi LÃgi Bariani Bernucci, Jorge Barbosa Soares.
Subjects/Keywords: ENGENHARIA DE TRANSPORTES; Atrito; friction, gradation, macrotexture, microtexture.; Pavimentos; SeguranÃa viÃria; Macrotextura; Microtextura
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APA (6th Edition):
Rodrigues, A. C. (2013). AvaliaÃÃo da influÃncia da granulometria na aderÃncia pneu-pavimento. (Masters Thesis). Universidade Federal do Ceará. Retrieved from http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13702 ;
Chicago Manual of Style (16th Edition):
Rodrigues, Amanda Cavalcante. “AvaliaÃÃo da influÃncia da granulometria na aderÃncia pneu-pavimento.” 2013. Masters Thesis, Universidade Federal do Ceará. Accessed September 23, 2019.
http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13702 ;.
MLA Handbook (7th Edition):
Rodrigues, Amanda Cavalcante. “AvaliaÃÃo da influÃncia da granulometria na aderÃncia pneu-pavimento.” 2013. Web. 23 Sep 2019.
Vancouver:
Rodrigues AC. AvaliaÃÃo da influÃncia da granulometria na aderÃncia pneu-pavimento. [Internet] [Masters thesis]. Universidade Federal do Ceará 2013. [cited 2019 Sep 23].
Available from: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13702 ;.
Council of Science Editors:
Rodrigues AC. AvaliaÃÃo da influÃncia da granulometria na aderÃncia pneu-pavimento. [Masters Thesis]. Universidade Federal do Ceará 2013. Available from: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13702 ;
The Ohio State University
6.
Li, Jia.
Ultrasonic Characterization of Polycrystals with Texture and
Microtexture: Theory and Experiment.
Degree: PhD, Welding Engineering, 2015, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1418908225
► When an ultrasonic wave propagates in polycrystalline materials, the wave is scattered on grain boundaries and the scattered waves carry important information on material microstructure,…
(more)
▼ When an ultrasonic wave propagates in polycrystalline
materials, the wave is scattered on grain boundaries and the
scattered waves carry important information on material
microstructure, e.g. grain size and texture. Using grain scattering
information for nondestructive testing purposes can be useful as
quality control in many manufacturing processes. In particular,
measurement and interpretation of ultrasonic scattering can be very
useful in the development of practical methods for nondestructive
ultrasonic characterization of microtextured regions in titanium
alloys that are widely used for aeroengine components. Ultrasonic
scattering and scattering-induced ultrasonic attenuation are two
measurable ultrasonic characteristics that can be employed for
material microstructures characterization. Most past studies
address ultrasonic attenuation and scattering in polycrystals with
macroscopic isotropy or simple artificial textures and equiaxed
grains of high crystallographic symmetry (cubic or hexagonal).
However, most manmade materials, as a result of thermomechanical
processing, exhibit nonequiaxed grains and complex forms of
macroscopic texture.One objective of this dissertation is to
provide a better understanding of ultrasonic propagation and
scattering in textured polycrystyals. In this dissertation, general
attenuation and scattering models are developed for polycrystals
with arbitrary
macrotexture and ellipsoidal grain shape with
triclinic symmetry. The attenuation coefficients were derived in
the Born approximation by generalizing previous theoretical models
that were suitable for equiaxed grains and uniaxial hexagonal
textures. The general scattering coefficients were obtained from
the integrand of the attenuation coefficients. The second major
objective is to ultrasonically characterize the microtextured
regions (MTRs) in Ti alloys which is a result of orientation
clustering of crystallites and leads to a reduction of dwell
fatigue properties of the material. The models developed are
extended to titanium alloys with those dual-scale microstructures.
The third objective of this dissertation is to establish an
inversion methodology to robustly reconstruct material
characteristics from ultrasonic attenuation and backscattering
measurements. By using a combination of the
attenuation-to-backscattering ratios and directional backscattering
ratios, an inversion procedure is developed for a complete
reconstruction of MTR sizes and its effective elastic parameters.
The experimental methodology and the system calibration method are
described for the near field of the ultrasonic transducer
measurements. Examples of measurements and application of inversion
models to typical titanium alloy samples are given. It is shown
that in general, the MTR sizes and the microtexture parameters
determined by ultrasonic inversion models are in reasonable
agreement with those measured by others on the same samples by
destructive electron backscatter diffraction (EBSD)
characterization methods.
Advisors/Committee Members: Rokhlin, Stanislav (Advisor).
Subjects/Keywords: Materials Science; Acoustics; ultrasound propagation and scattering; material characterization; macrotexture and microtexture
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APA (6th Edition):
Li, J. (2015). Ultrasonic Characterization of Polycrystals with Texture and
Microtexture: Theory and Experiment. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1418908225
Chicago Manual of Style (16th Edition):
Li, Jia. “Ultrasonic Characterization of Polycrystals with Texture and
Microtexture: Theory and Experiment.” 2015. Doctoral Dissertation, The Ohio State University. Accessed September 23, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1418908225.
MLA Handbook (7th Edition):
Li, Jia. “Ultrasonic Characterization of Polycrystals with Texture and
Microtexture: Theory and Experiment.” 2015. Web. 23 Sep 2019.
Vancouver:
Li J. Ultrasonic Characterization of Polycrystals with Texture and
Microtexture: Theory and Experiment. [Internet] [Doctoral dissertation]. The Ohio State University; 2015. [cited 2019 Sep 23].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1418908225.
Council of Science Editors:
Li J. Ultrasonic Characterization of Polycrystals with Texture and
Microtexture: Theory and Experiment. [Doctoral Dissertation]. The Ohio State University; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1418908225
Virginia Tech
7.
Bongioanni, Vincent Italo.
Enhancing Network-Level Pavement Macrotexture Assessment.
Degree: PhD, Civil and Environmental Engineering, 2019, Virginia Tech
URL: http://hdl.handle.net/10919/89326
► Pavement macrotexture has been shown to influence a range of safety and comfort issues including wet weather friction, splash and spray, ambient and in-vehicle noise,…
(more)
▼ Pavement
macrotexture has been shown to influence a range of safety and comfort issues including wet weather friction, splash and spray, ambient and in-vehicle noise, tire wear, and rolling resistance. While devices and general guidance exist to measure
macrotexture, the wide-scale collection and use of
macrotexture is neither mandated nor is it typically employed in the United States. This work seeks to improve upon the methods used to calibrate, collect, pre-process, and distill
macrotexture data into useful information that can be utilized by pavement managers. This is accomplished by 1. developing a methodology to evaluate and compare candidate data collection devices; 2. plans and procedures to evaluate the accuracy of high-speed network data collection devices with reference surfaces and measurements; 3. the development of a method to remove erroneous data from emerging 3-D
macrotexture sensors; 4. development of a model to describe the change in
macrotexture as a function of traffic; 5.finally, distillation of the final collected pavement surface profiles into parameters for the prediction of important pavement surface properties aforementioned. Various high-speed
macrotexture measurement devices were shown to have good repeatability (between 0.06 to 0.09mm MPD) and interchangeability of single-spot laser dfevices was demonstrated via a limits of agreement analysis. The operational factors of speed and acceleration were shown to affect the resulting MPD of several devices and guidelines are given for vehicle speed and sensor exposure settings. Devices with single spot and line lasers were shown to reproduce reference waveforms on manufactured surfaces within predefined tolerances. A model was developed that predicts future
macrotexture levels (as measured by RMS) for pavements prone to bleeding due to rich asphalt content. Finally, several previously published
macrotexture parameters along with a suite of novel parameters were evaluated for their effectiveness in the prediction of wet weather friction and certain types of road noise. Many of the parameters evaluated outperformed the current metrics of MPD and RMS.
Advisors/Committee Members: Flintsch, Gerardo W. (committeechair), de Leon Izeppi, Edgar D. (committee member), Ferris, John B. (committee member), Trani, Antonio A. (committee member).
Subjects/Keywords: macrotexture; friction; noise; outliers; dropouts; Accelerated Pavement Testing; Surface Properties; Agreement; Repeatability; calibration; accuracy; parameters
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APA (6th Edition):
Bongioanni, V. I. (2019). Enhancing Network-Level Pavement Macrotexture Assessment. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/89326
Chicago Manual of Style (16th Edition):
Bongioanni, Vincent Italo. “Enhancing Network-Level Pavement Macrotexture Assessment.” 2019. Doctoral Dissertation, Virginia Tech. Accessed September 23, 2019.
http://hdl.handle.net/10919/89326.
MLA Handbook (7th Edition):
Bongioanni, Vincent Italo. “Enhancing Network-Level Pavement Macrotexture Assessment.” 2019. Web. 23 Sep 2019.
Vancouver:
Bongioanni VI. Enhancing Network-Level Pavement Macrotexture Assessment. [Internet] [Doctoral dissertation]. Virginia Tech; 2019. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/10919/89326.
Council of Science Editors:
Bongioanni VI. Enhancing Network-Level Pavement Macrotexture Assessment. [Doctoral Dissertation]. Virginia Tech; 2019. Available from: http://hdl.handle.net/10919/89326
Northeastern University
8.
Saykin, Vitaliy Victorovich.
Pavement macrotexture monitoring through sound generated by the tire-pavement interaction.
Degree: MS, Department of Civil and Environmental Engineering, 2011, Northeastern University
URL: http://hdl.handle.net/2047/d20002466
► Safe roads require pavement surfaces that provide adequate friction to tires, helping to bring vehicles to a complete stop in a timely manner that avoids…
(more)
▼ Safe roads require pavement surfaces that provide adequate friction to tires, helping to bring vehicles to a complete stop in a timely manner that avoids accidents. The current manual methods of evaluating surface friction of roads and bridges are not only dangerous for the inspectors and motorists on the road but they are also very time-consuming and subject to inspector's judgment. This thesis confirms the possibility of monitoring friction of pavement through pavement macrotexture from acoustic measurements underneath the body of a moving vehicle. Currently, macrotexture is quantified by a Mean Texture Depth (MTD) index. In the present work, MTD is estimated from the sound generated by the tire-pavement interaction in a moving vehicle. To establish this approach, experiments were performed at the National Center for Asphalt Technology in Auburn, Alabama. Signal processing techniques were used to identify a frequency band that led to an accurate correlation between integrated acoustic pressure and MTD. This frequency band depends on the speed of the vehicle and the pavement macrotexture. The effect of microphone locations and the speed of the vehicle on macrotexture monitoring are studied and conclusions are presented. It is observed that raising the microphones by 13 inches decreased correlation by approximately 13%. Microphones that are close and pointing towards contact patch of rear tire have highest correlation to MTD. Also, it is concluded that correlation increases with vehicle speed. Accurate estimates of MTD were obtained for road surfaces having MTD values in the range of 0.5 - 2.5 mm with vehicle speeds in the range of 32 - 80 km/h (20 - 50 mph).
Subjects/Keywords: friction; health-monitoring; Infrastructure; macrotexture; noise; pavement; Pavements - Testing; Surfaces (Technology); Civil Engineering
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APA (6th Edition):
Saykin, V. V. (2011). Pavement macrotexture monitoring through sound generated by the tire-pavement interaction. (Masters Thesis). Northeastern University. Retrieved from http://hdl.handle.net/2047/d20002466
Chicago Manual of Style (16th Edition):
Saykin, Vitaliy Victorovich. “Pavement macrotexture monitoring through sound generated by the tire-pavement interaction.” 2011. Masters Thesis, Northeastern University. Accessed September 23, 2019.
http://hdl.handle.net/2047/d20002466.
MLA Handbook (7th Edition):
Saykin, Vitaliy Victorovich. “Pavement macrotexture monitoring through sound generated by the tire-pavement interaction.” 2011. Web. 23 Sep 2019.
Vancouver:
Saykin VV. Pavement macrotexture monitoring through sound generated by the tire-pavement interaction. [Internet] [Masters thesis]. Northeastern University; 2011. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/2047/d20002466.
Council of Science Editors:
Saykin VV. Pavement macrotexture monitoring through sound generated by the tire-pavement interaction. [Masters Thesis]. Northeastern University; 2011. Available from: http://hdl.handle.net/2047/d20002466
Virginia Tech
9.
Mogrovejo Carrasco, Daniel Estuardo.
Enhancing Pavement Surface Macrotexture Characterization.
Degree: PhD, Civil and Environmental Engineering, 2015, Virginia Tech
URL: http://hdl.handle.net/10919/51957
► One of the most important objectives for transportation engineers is to understand pavement surface properties and their positive and negative effects on the user. This…
(more)
▼ One of the most important objectives for transportation engineers is to understand pavement surface properties and their positive and negative effects on the user. This can improve the design of the infrastructure, adequacy of tools, and consistency of methodologies that are essential for transportation practitioners regarding
macrotexture characterization. Important pavement surface characteristics, or tire-pavement interactions, such as friction, tire-pavement noise, splash and spray, and rolling resistance, are significantly influenced by pavement
macrotexture.
This dissertation compares static and dynamic
macrotexture measurements and proposes and enhanced method to quantify the
macrotexture. Dynamic measurements performed with vehicle-mounted lasers have the advantage of measuring
macrotexture at traffic speed. One drawback of these laser devices is the presence of 'spikes' in the collected data, which impact the texture measurements. The dissertation proposes two robust and innovative methods to overcome this limitation.
The first method is a data-driven adaptive method that detects and removes the spikes from high-speed laser texture measurements. The method first calculates the discrete wavelet transform of the texture measurements. It then detects (at all levels) and removes the spikes from the obtained wavelet coefficients (or differences). Finally, it calculates the inverse discrete wavelet transform with the processed wavelet coefficients (without outliers) to obtain the Mean Profile Depth (MPD) from the measurements with the spikes removed. The method was validated by comparing the results with MPD measurements obtained with a Circular Texture Meter (CTMeter) that was chosen as the control device.
Although this first method was able to successfully remove the spikes, it has the drawback that it depends on manual modeling of the distribution of the wavelet coefficients to correctly define an appropriate threshold. The next step of this dissertation proposes an enhanced to the spike removal methodology for
macrotexture measurements taken with high-speed laser devices. This denoising methodology uses an algorithm that defines the distribution of texture measurements by using the family of Generalized Gaussian Distributions (GGD), along with the False Discovery Rate (FDR) method that controls the proportion of wrongly identified spikes among all identified spikes. The FDR control allows for an adaptive threshold selection that differentiates between valid measurements and spikes. The validation of the method showed that the MPD results obtained with denoised dynamic measurements are comparable to MPD results from the control devices. This second method is included as a crucial step in the last stage of this dissertation as explained following.
The last part of the dissertation presents an enhanced
macrotexture characterization index based on the Effective Area for Water Evacuation (EAWE), which: (1) Estimates the potential of the pavement to drain water and (2) Correlates better with two pavement…
Advisors/Committee Members: Flintsch, Gerardo W. (committeechair), de León Izeppi, Edgar (committee member), Trani, Antonio A. (committee member), Ferris, John B. (committee member).
Subjects/Keywords: Pavement Surface Properties; Macrotexture Characterization; High Speed Laser Device; Spike removal; False Discovery Rate; Effective Area for Water Evacuation.
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APA (6th Edition):
Mogrovejo Carrasco, D. E. (2015). Enhancing Pavement Surface Macrotexture Characterization. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/51957
Chicago Manual of Style (16th Edition):
Mogrovejo Carrasco, Daniel Estuardo. “Enhancing Pavement Surface Macrotexture Characterization.” 2015. Doctoral Dissertation, Virginia Tech. Accessed September 23, 2019.
http://hdl.handle.net/10919/51957.
MLA Handbook (7th Edition):
Mogrovejo Carrasco, Daniel Estuardo. “Enhancing Pavement Surface Macrotexture Characterization.” 2015. Web. 23 Sep 2019.
Vancouver:
Mogrovejo Carrasco DE. Enhancing Pavement Surface Macrotexture Characterization. [Internet] [Doctoral dissertation]. Virginia Tech; 2015. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/10919/51957.
Council of Science Editors:
Mogrovejo Carrasco DE. Enhancing Pavement Surface Macrotexture Characterization. [Doctoral Dissertation]. Virginia Tech; 2015. Available from: http://hdl.handle.net/10919/51957
Virginia Tech
10.
Huang, ManQuan.
Comparison of Macrotexture Measuring Devices Used in Virginia.
Degree: MS, Civil Engineering, 2004, Virginia Tech
URL: http://hdl.handle.net/10919/42728
► This thesis compared macrotexture measurements obtained using the volumetric method (Sand Patch) and three laser-based devices: MGPS system, ICC laser profiler, and Circular Texture Meter…
(more)
▼ This thesis compared
macrotexture measurements obtained using the volumetric method (Sand Patch) and three laser-based devices: MGPS system, ICC laser profiler, and Circular Texture Meter (CTMeter). The study used data from three sources: two controlled experiments conducted at the Virginia Smart Road, field data collected on eight newly constructed hot-mix-asphalt (HMA) roadway surfaces, and data collected on airport surfaces at the Wallops flight facility, Virginia.
The data collected at the Virginia Smart Road, a controlled-access two-lane road that includes various HMA and concrete surfaces, was used for the main analysis. The other two sets of data were used for verification and validation of the model developed. The analysis of the data collected at the Virginia Smart Road showed that the CTMeter mean profile depth (MPD) has the highest correlation with the volumetric (Sand Patch) mean texture depth (MTD). Furthermore, texture convexity had a significant effect on the correlation between the measurements obtained with different devices.
Two sets of models for converting the laser-based texture measurements to an estimated MTD (ETD) were developed. One set of equations considered all the data collected at the Virginia Smart Road, and the other excluded the measurements on the Open-Graded Friction Course (OGFC). The developed models were tested using measurements collected at eight roadway sections throughout Virginia and the Wallops flight facility. The model, excluding the OGFC section, was successfully applied to other sites.
Advisors/Committee Members: Flintsch, Gerardo W. (committeechair), Al-Qadi, Imadeddin L. (committee member), Loulizi, Amara (committee member).
Subjects/Keywords: Correlation; Texture Measurement; Pavement Macrotexture; Mean Profile Depth (MPD)
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APA (6th Edition):
Huang, M. (2004). Comparison of Macrotexture Measuring Devices Used in Virginia. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/42728
Chicago Manual of Style (16th Edition):
Huang, ManQuan. “Comparison of Macrotexture Measuring Devices Used in Virginia.” 2004. Masters Thesis, Virginia Tech. Accessed September 23, 2019.
http://hdl.handle.net/10919/42728.
MLA Handbook (7th Edition):
Huang, ManQuan. “Comparison of Macrotexture Measuring Devices Used in Virginia.” 2004. Web. 23 Sep 2019.
Vancouver:
Huang M. Comparison of Macrotexture Measuring Devices Used in Virginia. [Internet] [Masters thesis]. Virginia Tech; 2004. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/10919/42728.
Council of Science Editors:
Huang M. Comparison of Macrotexture Measuring Devices Used in Virginia. [Masters Thesis]. Virginia Tech; 2004. Available from: http://hdl.handle.net/10919/42728
11.
Ranazzi, Paula Pompeo de Camargo.
Estudo de misturas betuminosas do tipo CPA para revestimento de pavimentos aeroportuários.
Degree: 2016, Instituto Politécnico do Porto
URL: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/11110
► A infraestrutura aeroportuária assume papel de destaque tratando-se de segurança de vôo, dado ao grande percentual de ocorrência de acidentes nas operações de aterragem e…
(more)
▼ A infraestrutura aeroportuária assume papel de destaque tratando-se de segurança de vôo, dado ao grande percentual de ocorrência de acidentes nas operações de aterragem e descolagem. Os pavimentos aeroportuários são responsáveis por promover características adequadas para garantir a segurança dos utentes nessas operações.
A preocupação geral quanto às características funcionais do pavimento está relacionada com a aderência entre o pneu da aeronave e a superfície da pista de aterragem e descolagem. Objetiva-se a obtenção de revestimentos a partir de misturas betuminosas que assegurem a aderência pneupavimento, por meio da combinação da microtextura e macrotextura, criando propriedades de atrito adequadas à variação da velocidade das aeronaves e à adversidade das situações climáticas.
A estrutura do pavimento aeroportuário pode variar entre pavimento rígido e flexível, devido à ordem técnica e económica. A escolha do tipo de pavimento é justificada conforme o tipo de utilização do mesmo (pistas, caminhos de circulação, áreas de estacionamento).
O presente trabalho apresenta o estudo sobre o uso de misturas betuminosas do tipo camada porosa de atrito (CPA), que corresponde a uma camada betuminosa aberta, como camada de revestimento de pavimentos aeroportuários.
O trabalho desenvolve-se através do estudo das especificações técnicas para a utilização desse tipo de camada, bem como suas vantagens frente a revestimentos convencionais, que fundamentam sua aplicação como revestimento de pavimentos aeroportuários, e as limitações para seu uso.
Como estudo de caso será analisada a aplicação dessa mistura betuminosa aberta na obra de recapeamento na pista de aterragem e descolagem do Aeroporto de Catoca, a partir de documentos que relatam patologias ocorridas após um ano da execução.
Pretende-se, também, a identificação das possíveis causas dessas patologias por meio da comparação entre a descrição dos documentos fornecidos pela empresa responsável pelo projeto e as especificações técnicas apresentadas nesse trabalho.
The airport infrastructure assumes a prominent role in the case of flight safety, given to the high percentage of accidents in landing and taking-off operations. The airport pavements are responsible for promoting adequate characteristics to ensure the safety of users in such operations.
The general concern about the pavement´s functional characteristics relates to the adhesion between the aircraft tire and the surface of the landing and taking-off runway. The goal is to obtain coatings from asphalt mixtures to ensure the tire-pavement grip, by combining microtextures and macrotextures in order to create friction properties suitable for both aircraft speed variation and climate adversity situations.
The structure of the airport pavement can be either rigid or flexible, due to technical and economic issues. The choice of the kind of pavement is justified according to the type of its use (runways, taxiways, parking areas).
This paper presents a study on the use of plant mixed of porous friction course (PFC), which…
Advisors/Committee Members: Jacob, Ângelo Manuel Goncalves.
Subjects/Keywords: Atrito; Revestimento; Aderência; Microtextura; Macrotextura; Pavimento aeroportuário; Friction; Wearing surface; Adhesion; Microtexture; Macrotexture; Airport pavement; Gestão da Construção
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APA (6th Edition):
Ranazzi, P. P. d. C. (2016). Estudo de misturas betuminosas do tipo CPA para revestimento de pavimentos aeroportuários. (Thesis). Instituto Politécnico do Porto. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/11110
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ranazzi, Paula Pompeo de Camargo. “Estudo de misturas betuminosas do tipo CPA para revestimento de pavimentos aeroportuários.” 2016. Thesis, Instituto Politécnico do Porto. Accessed September 23, 2019.
https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/11110.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ranazzi, Paula Pompeo de Camargo. “Estudo de misturas betuminosas do tipo CPA para revestimento de pavimentos aeroportuários.” 2016. Web. 23 Sep 2019.
Vancouver:
Ranazzi PPdC. Estudo de misturas betuminosas do tipo CPA para revestimento de pavimentos aeroportuários. [Internet] [Thesis]. Instituto Politécnico do Porto; 2016. [cited 2019 Sep 23].
Available from: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/11110.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ranazzi PPdC. Estudo de misturas betuminosas do tipo CPA para revestimento de pavimentos aeroportuários. [Thesis]. Instituto Politécnico do Porto; 2016. Available from: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/11110
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
12.
Stránský, Jakub.
Protismykové vlastnosti vozovek
.
Degree: 2013, Brno University of Technology
URL: http://hdl.handle.net/11012/28908
► Bakalářská práce má za cíl zpracování poznatků o protismykových vlastnostech, jejich měření, zařízení k tomu sloužící a poruchy a jejich vhodné opravy u tuhých a…
(more)
▼ Bakalářská práce má za cíl zpracování poznatků o protismykových vlastnostech, jejich měření, zařízení k tomu sloužící a poruchy a jejich vhodné opravy u tuhých a netuhých vozovek. Praktická část vyhodnocuje protismykové vlastnosti vybraných dálničních úseků s tuhým i netuhým krytem na základě naměřených hodnot PTV.; Bachelor’s thesis main purpose is to process the knowledge about skid resistance, its mesurement, the equipment used and its failures and suitable repairs of solid and nonsolid roadways. The practical part evaluates skid resistance properities of selected highway sections with solid and nonsolid surface on the basis of measured values of PTV.
Advisors/Committee Members: Hýzl, Petr (advisor).
Subjects/Keywords: Protismykové vlastnosti;
mikrotextura;
makrotextura;
povrch vozovky;
ztráta PVV;
obnova PVV;
Skid resistance;
mircotexture;
macrotexture;
road surface;
loss of SR;
renewal SR
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APA (6th Edition):
Stránský, J. (2013). Protismykové vlastnosti vozovek
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/28908
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Stránský, Jakub. “Protismykové vlastnosti vozovek
.” 2013. Thesis, Brno University of Technology. Accessed September 23, 2019.
http://hdl.handle.net/11012/28908.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Stránský, Jakub. “Protismykové vlastnosti vozovek
.” 2013. Web. 23 Sep 2019.
Vancouver:
Stránský J. Protismykové vlastnosti vozovek
. [Internet] [Thesis]. Brno University of Technology; 2013. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/11012/28908.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Stránský J. Protismykové vlastnosti vozovek
. [Thesis]. Brno University of Technology; 2013. Available from: http://hdl.handle.net/11012/28908
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
13.
LIU YING.
Evaluation of British pendulum tester for laboratory pavement skid resistance measurements.
Degree: 2004, National University of Singapore
URL: http://scholarbank.nus.edu.sg/handle/10635/13804
Subjects/Keywords: pendulum; microtexture; macrotexture; skid resistance; water; finite element modeling.
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Manager
APA (6th Edition):
YING, L. (2004). Evaluation of British pendulum tester for laboratory pavement skid resistance measurements. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/13804
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
YING, LIU. “Evaluation of British pendulum tester for laboratory pavement skid resistance measurements.” 2004. Thesis, National University of Singapore. Accessed September 23, 2019.
http://scholarbank.nus.edu.sg/handle/10635/13804.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
YING, LIU. “Evaluation of British pendulum tester for laboratory pavement skid resistance measurements.” 2004. Web. 23 Sep 2019.
Vancouver:
YING L. Evaluation of British pendulum tester for laboratory pavement skid resistance measurements. [Internet] [Thesis]. National University of Singapore; 2004. [cited 2019 Sep 23].
Available from: http://scholarbank.nus.edu.sg/handle/10635/13804.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
YING L. Evaluation of British pendulum tester for laboratory pavement skid resistance measurements. [Thesis]. National University of Singapore; 2004. Available from: http://scholarbank.nus.edu.sg/handle/10635/13804
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
14.
Pinto Filho, Washington Luiz.
Avaliação e diagnóstico de vias urbanas expressas de Manaus: condições estruturais e funcionais.
Degree: 2013, Universidade Federal do Amazonas
URL: http://tede.ufam.edu.br/handle/tede/4621
► A cidade de Manaus apresenta uma das maiores taxas de crescimento médio da frota de veículos, segundo dados do DENATRAN. Nos últimos 10 anos, a…
(more)
▼ A cidade de Manaus apresenta uma das maiores taxas de crescimento médio da frota de veículos, segundo dados do DENATRAN. Nos últimos 10 anos, a frota de automóveis aumentou de 124.840 (2003) para 297.473 automóveis (2013) e 3.179 ônibus (2003) para 7.398 ônibus (2013). Isto equivale a um aumento de 138 %. Ademais, ainda, segundo o DENATRAN, em 2003, Manaus tinha 220.816 veículos. Em 2013, Manaus já possui 551.455 veículos registrados na sua frota municipal, o que equivale a um aumento de quase 150 %. Como consequência deste crescimento, as vias da cidade apresentam-se com sua capacidade de fluxo inoperante e, visualmente, com seus pavimentos totalmente deformados. Neste sentido, procurou-se realizar, nesta pesquisa, uma avaliação estrutural dos pavimentos das principais vias da cidade (Av. Constantino Nery, Av. Djalma Batista, Av. Recife, Av. Paraíba e Av. Efigênio Sales), empregando a técnica FWD (Falling Weight Deflectometer) no diagnóstico das estruturas dos pavimentos das referidas vias. Os resultados obtidos mostraram que as estruturas daqueles pavimentos ainda apresentam a condição de suportar as solicitações de carga de tráfego a elas aplicadas, visto que sua qualidade estrutural, obtida pela técnica mencionada, apresentou-se em boas condições, em função dos pavimentos terem apresentado deflexões máximas inferiores às admissíveis, bem como raios de curvatura muito superiores a 100 m. Como complemento à análise estrutural, realizou-se análise das condições funcionais do revestimento com relação à aderência pneu-pavimento, a qual apresentou valores para microtextura e macrotextura bem fora dos intervalos recomendados pelas normas.
The city of Manaus has the highest average growth rates of the fleet, according to the DENATRAN. Over the past 10 years, the fleet of cars rose from 124,840 (2003) to 297,473 cars (2013) and 3,179 buses (2003) to 7,398 buses (2013). This equates to a 138% increase. Moreover, although, according to DENATRAN in 2003, Manaus was 220,816 vehicles. In 2013, Manaus already has 551,455 registered vehicles in its municipal fleet, which equates to an increase of almost 150%. As a result of this growth, the city roads are presented with its ability to flow and dead, visually, with their decks completely deformed. In this sense, we tried to carry this research, a structural evaluation of pavements of the main streets of the town (Av. Constantino Nery, Avenida Djalma Batista, Recife Av, Av and Av Efigênio Sales Paraíba), employing the technique FWD (Falling Weight Deflectometer) in the diagnosis of the pavement structures of these pathways. The results showed that the structures of those decks still have the condition to withstand the demands of traffic load applied to them, since their structural quality obtained by the mentioned technique, presented in good condition, according to the floors they presented deflections smaller than the allowed maximum, and radii of curvature much greater than 100 m. In addition, analysis was performed of the safety of the coating with respect to tire-pavement…
Advisors/Committee Members: Campelo, Nilton de Souza, 231.011.562-20, http://lattes.cnpq.br/0154919359639550.
Subjects/Keywords: Falling Weight Deflectometer; Raio de Curvatura; Deflexões admissíveis; Microtextura; Macrotextura; Bend Radius; Allowable deflection; Microtexture; Macrotexture; ENGENHARIAS: ENGENHARIA CIVIL
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APA (6th Edition):
Pinto Filho, W. L. (2013). Avaliação e diagnóstico de vias urbanas expressas de Manaus: condições estruturais e funcionais. (Masters Thesis). Universidade Federal do Amazonas. Retrieved from http://tede.ufam.edu.br/handle/tede/4621
Chicago Manual of Style (16th Edition):
Pinto Filho, Washington Luiz. “Avaliação e diagnóstico de vias urbanas expressas de Manaus: condições estruturais e funcionais.” 2013. Masters Thesis, Universidade Federal do Amazonas. Accessed September 23, 2019.
http://tede.ufam.edu.br/handle/tede/4621.
MLA Handbook (7th Edition):
Pinto Filho, Washington Luiz. “Avaliação e diagnóstico de vias urbanas expressas de Manaus: condições estruturais e funcionais.” 2013. Web. 23 Sep 2019.
Vancouver:
Pinto Filho WL. Avaliação e diagnóstico de vias urbanas expressas de Manaus: condições estruturais e funcionais. [Internet] [Masters thesis]. Universidade Federal do Amazonas; 2013. [cited 2019 Sep 23].
Available from: http://tede.ufam.edu.br/handle/tede/4621.
Council of Science Editors:
Pinto Filho WL. Avaliação e diagnóstico de vias urbanas expressas de Manaus: condições estruturais e funcionais. [Masters Thesis]. Universidade Federal do Amazonas; 2013. Available from: http://tede.ufam.edu.br/handle/tede/4621
15.
Walton, Ryan J.
Characterization of Road Surfaces Using High Resolution 3D
Surface Scans to Develop Parameters for Predicting Tire-Surface
Friction.
Degree: MS, Mechanical Engineering, 2018, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1531432167496958
► Being able to accurately predict the coefficient of friction between a tire-surface pairing is highly desirable. Accurate coefficient of friction values would find use in…
(more)
▼ Being able to accurately predict the coefficient of
friction between a tire-surface pairing is highly desirable.
Accurate coefficient of friction values would find use in tire
models, highway safety applications, and motorsport competitions.
The work in this thesis seeks to accurately measure road surface
texture at high resolution, and examine the influence of surface
texture on the friction response. Friction measurements were
obtained with skid systems using ASTM standardized tires, and a
British Pendulum Tester. Great effort was taken to keep the tire or
rubber used constant such that the isolated effect of the road
surface texture on the coefficient of friction could be observed.
Friction measurements were collected on seventeen unique road
surface types. Each of these road surface types were then cored
such that two representative samples of road texture could be
measured at high resolution in a laboratory setting. From the
surface texture measurements on each core, eight surface parameters
were identified and computed. These surface parameters were
investigated with respect to friction using single and multivariate
linear regression models. Additionally surface texture stability
was conducted in order to investigate surface measurement
practices. Each surface texture data set was subsampled and
subdivided in order to better understand minimally acceptable scan
size and resolution with respect to surface texture.
Advisors/Committee Members: Dupaix, Rebecca (Advisor), Chrstos, Jeffrey (Advisor).
Subjects/Keywords: Mechanical Engineering; Tire Surface; macrotexture; microtexture; tire friction; 3D topology
…8,17,19,20] have identified the macrotexture
and microtexture ranges of surface texture as… …important to the hysteretic friction generation process.
Macrotexture is defined as texture having… …a priori equally important” with respect to friction generation from
the macrotexture and… …measure road surface macrotexture in a 3D area scan. The AMES 9300 uses a moving linear
rail… …AMES Engineering Inc.
It is designed to measure road surface macrotexture and microtexture in…
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APA (6th Edition):
Walton, R. J. (2018). Characterization of Road Surfaces Using High Resolution 3D
Surface Scans to Develop Parameters for Predicting Tire-Surface
Friction. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1531432167496958
Chicago Manual of Style (16th Edition):
Walton, Ryan J. “Characterization of Road Surfaces Using High Resolution 3D
Surface Scans to Develop Parameters for Predicting Tire-Surface
Friction.” 2018. Masters Thesis, The Ohio State University. Accessed September 23, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1531432167496958.
MLA Handbook (7th Edition):
Walton, Ryan J. “Characterization of Road Surfaces Using High Resolution 3D
Surface Scans to Develop Parameters for Predicting Tire-Surface
Friction.” 2018. Web. 23 Sep 2019.
Vancouver:
Walton RJ. Characterization of Road Surfaces Using High Resolution 3D
Surface Scans to Develop Parameters for Predicting Tire-Surface
Friction. [Internet] [Masters thesis]. The Ohio State University; 2018. [cited 2019 Sep 23].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1531432167496958.
Council of Science Editors:
Walton RJ. Characterization of Road Surfaces Using High Resolution 3D
Surface Scans to Develop Parameters for Predicting Tire-Surface
Friction. [Masters Thesis]. The Ohio State University; 2018. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1531432167496958
University of South Florida
16.
Fuentes, Luis G.
Investigation of the Factors Influencing Skid Resistance and the International Friction Index.
Degree: 2009, University of South Florida
URL: https://scholarcommons.usf.edu/etd/3920
► This dissertation is compiled of the findings of several phases of a detailed research study that was aimed at investigating the Skid Resistance phenomenon. In…
(more)
▼ This dissertation is compiled of the findings of several phases of a detailed research study
that was aimed at investigating the Skid Resistance phenomenon.
In the first phase of the dissertation research a study was performed to evaluate the
different factors that influence frictional measurements obtained using the Dynamic
Friction Tester (DFT). A temperature calibration factor that would account for
temperature effects on DFT readings and IFI computations was developed. In addition,
other variables that also affect the friction measurements obtained using the DFT are
identified.
In the next phase of the dissertation research the effect of pavement roughness on the
Skid Resistance was investigated. The variation of the normal load and its nonlinear
relation to SN was used to explain lower SN values measured on relatively rougher
surfaces. The feasibility of using the International Roughness Index (IRI) and the
Dynamic Load Coefficient (DLC) as predictors of the reduction in SN due to pavement
roughness was also investigated.
In the final phase of the dissertation research an in-depth investigation was carried out to
better understand the principles underlying the concept of the International Friction Index
(IFI), and specifically the role played by the Speed Constant (
Sp) parameter in the IFI
computations. The parameter
Sp dictates the speed variation of the wet friction
measurements taken on a given pavement surface. The results of the current investigation
suggest the revision of the procedure for computation of the
Sp parameter to incorporate
device specific properties.
Furthermore, the incorporation of vehicle characteristics in the
Sp parameter
computations would help address a well known deficiency of the IFI, which is the
inconsistent
FR60 (predicted friction at 60 km/h) obtained from the friction values
measured at two different slip speeds on the same surface. This study also showed that
the modification of the
Sp parameter reduces significantly the slip speed dependency of
the device calibration parameters
A and B.
Finally, a modified IFI procedure that incorporates device specific slip conditions is
presented. The modified IFI procedure showed consistently better predictive capability
than the conventional ASTM procedure on all the different devices considered in this
study.
Subjects/Keywords: Skid resistance; IFI; Roughness; Speed constant; Macrotexture; American Studies; Arts and Humanities
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APA (6th Edition):
Fuentes, L. G. (2009). Investigation of the Factors Influencing Skid Resistance and the International Friction Index. (Thesis). University of South Florida. Retrieved from https://scholarcommons.usf.edu/etd/3920
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fuentes, Luis G. “Investigation of the Factors Influencing Skid Resistance and the International Friction Index.” 2009. Thesis, University of South Florida. Accessed September 23, 2019.
https://scholarcommons.usf.edu/etd/3920.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fuentes, Luis G. “Investigation of the Factors Influencing Skid Resistance and the International Friction Index.” 2009. Web. 23 Sep 2019.
Vancouver:
Fuentes LG. Investigation of the Factors Influencing Skid Resistance and the International Friction Index. [Internet] [Thesis]. University of South Florida; 2009. [cited 2019 Sep 23].
Available from: https://scholarcommons.usf.edu/etd/3920.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fuentes LG. Investigation of the Factors Influencing Skid Resistance and the International Friction Index. [Thesis]. University of South Florida; 2009. Available from: https://scholarcommons.usf.edu/etd/3920
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
17.
Fisco, Nicholas Robert.
Comparison of Macrotexture Measurement Methods.
Degree: MS, Civil Engineering, 2009, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1243950873
► This study investigates and compares mean profile depth (MPD) measurements from three laser-based macrotexture measuring devices, namely a Dynatest laser profiler, a Circular Texture Meter,…
(more)
▼ This study investigates and compares mean profile
depth (MPD) measurements from three laser-based
macrotexture
measuring devices, namely a Dynatest laser profiler, a Circular
Texture Meter, and an Ames Laser Texture Scanner, to mean texture
depth (MTD) results from volumetric sand patch tests. In addition,
the effects of speed and material type on the MPD results for the
profiler are researched. The effect of
macrotexture on surface
friction is also investigated using a Dynamic Friction Tester. The
study uses sand patch test data obtained from field testing at
three sites, each with a variety of pavement types, and laboratory
testing on various types of Hot Mix Asphalt (HMA) and Portland
cement concrete samples of varying finish, as well as other common,
manufactured, textured samples. Analysis of the data shows that the
MPD obtained from the Ames Laser Texture Scanner has the highest
correlation to the MTD measurements determined using the sand patch
test. It is also determined that the MPD values taken by the laser
profiler decreased as the speed at which the sample was traveling
increased. A new correlation for predicting MTD from laser profiler
MPD is developed through laboratory testing. Additionally, it is
found that material type had an effect on the laser MPD
values.
Advisors/Committee Members: Sezen, Halil (Advisor).
Subjects/Keywords: Civil Engineering; macrotexture; mean profile depth; MPD; mean texture depth; MTD; pavement; friction
…94
CHAPTER 11 COMPARISON OF SURFACE MACROTEXTURE METHODS ............................. 100… …Table 11.2 Recommended Acceptable Limits for Sufficient Macrotexture
xvii
106
111
Table… …Macrotexture Equations and Range of Use
129
Table 12.1 Summary of Proposed Relations along with… …characteristics is macrotexture.
Macrotexture can be defined as surface irregularities of wavelength… …Macrotexture
also provides the hysteresis component of the pavement friction (Flintsch et al…
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APA ·
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MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Fisco, N. R. (2009). Comparison of Macrotexture Measurement Methods. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1243950873
Chicago Manual of Style (16th Edition):
Fisco, Nicholas Robert. “Comparison of Macrotexture Measurement Methods.” 2009. Masters Thesis, The Ohio State University. Accessed September 23, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1243950873.
MLA Handbook (7th Edition):
Fisco, Nicholas Robert. “Comparison of Macrotexture Measurement Methods.” 2009. Web. 23 Sep 2019.
Vancouver:
Fisco NR. Comparison of Macrotexture Measurement Methods. [Internet] [Masters thesis]. The Ohio State University; 2009. [cited 2019 Sep 23].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1243950873.
Council of Science Editors:
Fisco NR. Comparison of Macrotexture Measurement Methods. [Masters Thesis]. The Ohio State University; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1243950873
Brno University of Technology
18.
Dašková, Jaroslava.
Závislost protismykových vlastností povrchů vozovek na ohladitelnosti kameniva a dopravním zatížení
.
Degree: 2014, Brno University of Technology
URL: http://hdl.handle.net/11012/36246
► Bezpečnost silničního provozu je komplexní problém. Ovlivňuje ji především řidič, vozidlo a povrch vozovky. Tato disertační práce se zaměřila na povrchové vlastnosti vozovek a to…
(more)
▼ Bezpečnost silničního provozu je komplexní problém. Ovlivňuje ji především řidič, vozidlo a povrch vozovky. Tato disertační práce se zaměřila na povrchové vlastnosti vozovek a to zejména protismykové vlastnosti povrchu vozovek, které přímo ovlivňují brzdnou dráhu vozidel a vedení vozidla ve směrových obloucích a tím i dopravní nehodovost. Práce se zabývá trvanlivostí protismykových vlastností povrchu vozovek, druhem použitých vrstev a ohladitelností kameniva použitého v obrusné vrstvě. Cílem této práce bylo vyvinout metodiku pro zlepšení trvanlivosti protismykových vlastností povrchů vozovek a zavedení funkční zkoušky pro jejich posuzování.; Road safety is a complex problem. It is influenced mainly by the driver, the vehicle and the road surface. This thesis is focused on the road surface properties and especially skid resistance that directly affect the braking distance and keeping the vehicle in the horizontal curves and thus traffic accidents. The thesis deals with the durability of pavement surface skid resistance, the type of pavement layers and aggregate polishing used in wearing course. The aim of this thesis was to develop the methodology for improvement of road surfaces skid resistance durability and implementation of functional test for their assessment.
Advisors/Committee Members: Kudrna, Jan (advisor).
Subjects/Keywords: Makrotextura;
mikrotextura;
protismykové vlastnosti povrchu vozovky;
součinitel tření;
dopravní zatížení;
dopravní nehodovost;
ohladitelnost kameniva;
metoda dle Wehnera/Schulzeho;
obrusná vrstva;
Macrotexture;
microtexture;
pavement surface skid resistance;
friction coefficient;
traffic loading;
road accidents;
aggregate polishing;
Wehner/Schulze method;
wearing course
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Dašková, J. (2014). Závislost protismykových vlastností povrchů vozovek na ohladitelnosti kameniva a dopravním zatížení
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/36246
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Dašková, Jaroslava. “Závislost protismykových vlastností povrchů vozovek na ohladitelnosti kameniva a dopravním zatížení
.” 2014. Thesis, Brno University of Technology. Accessed September 23, 2019.
http://hdl.handle.net/11012/36246.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Dašková, Jaroslava. “Závislost protismykových vlastností povrchů vozovek na ohladitelnosti kameniva a dopravním zatížení
.” 2014. Web. 23 Sep 2019.
Vancouver:
Dašková J. Závislost protismykových vlastností povrchů vozovek na ohladitelnosti kameniva a dopravním zatížení
. [Internet] [Thesis]. Brno University of Technology; 2014. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/11012/36246.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Dašková J. Závislost protismykových vlastností povrchů vozovek na ohladitelnosti kameniva a dopravním zatížení
. [Thesis]. Brno University of Technology; 2014. Available from: http://hdl.handle.net/11012/36246
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
19.
Nekulová, Pavla.
Součinitel tření povrchu vozovky a Skid Resistance Index
.
Degree: 2014, Brno University of Technology
URL: http://hdl.handle.net/11012/30385
► Tato diplomová práce se zabývá souvislostí mezi poklesem součinitele podélného tření v závislosti na měřicí rychlosti a hodnotou makrotextury povrchu MPD. Jsou zde uvedeny výsledky…
(more)
▼ Tato diplomová práce se zabývá souvislostí mezi poklesem součinitele podélného tření v závislosti na měřicí rychlosti a hodnotou makrotextury povrchu MPD. Jsou zde uvedeny výsledky měření součinitele podélného tření a hodnoty makrotextury povrchu MPD z měření na 73 úsecích. Srovnání výsledků z těchto měření bylo provedeno pomocí regresní analýzy, jejíž výsledky posloužily pro stanovení vzorce, který umožňuje přepočet součinitele tření při různých měřicích rychlostech při známé hodnotě součinitele podélného tření při měřicí rychlosti 60 km/h a hodnotě makrotextury povrchu MPD. V práci byly také stanoveny hodnotící stupnice pro index protismykových vlastností (SRI), která by mohla být použita pro hodnocení protismykových vlastností nezávisle na použitém měřicím zařízení.; This diploma thesis deals with the relation between the longitudinal friction coefficient dependence on measuring speed and the value of road surface
macrotexture MPD. Results of longitudinal friction coefficient and value of MPD measurement on 73 sections are included in this thesis. The results were compared by regression analysis and its outcome was used for determination of formula that enable calculation of longitudinal friction coefficient for any operating speed when longitudinal friction coefficient for 60 km/h and value of
macrotexture are known. The evaluation scale for skid resistance index (SRI) was also determined in this thesis. It could be used for evaluation of skid resistance independently of the type of device used for friction coefficient measurement.
Advisors/Committee Members: Kudrna, Jan (advisor).
Subjects/Keywords: Součinitel tření;
makrotextura;
mikrotextura;
střední hloubka profilu (MPD);
index protismykových vlastností (SRI);
měřicí rychlost;
povrch vozovky.;
Friction coefficient;
macrotexture;
microtexture;
mean profile depth (MPD);
skid resistance index (SRI);
operating speed;
road surface.
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Nekulová, P. (2014). Součinitel tření povrchu vozovky a Skid Resistance Index
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/30385
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Nekulová, Pavla. “Součinitel tření povrchu vozovky a Skid Resistance Index
.” 2014. Thesis, Brno University of Technology. Accessed September 23, 2019.
http://hdl.handle.net/11012/30385.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nekulová, Pavla. “Součinitel tření povrchu vozovky a Skid Resistance Index
.” 2014. Web. 23 Sep 2019.
Vancouver:
Nekulová P. Součinitel tření povrchu vozovky a Skid Resistance Index
. [Internet] [Thesis]. Brno University of Technology; 2014. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/11012/30385.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nekulová P. Součinitel tření povrchu vozovky a Skid Resistance Index
. [Thesis]. Brno University of Technology; 2014. Available from: http://hdl.handle.net/11012/30385
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Northeastern University
20.
Zhang, Yiying.
Use of vehicle noise for roadway distress detection and assessment.
Degree: PhD, Department of Civil and Environmental Engineering, 2015, Northeastern University
URL: http://hdl.handle.net/2047/d20009290
► This work evaluates the pavement surface condition and detects the pavement subsurface delamination through vehicle noise collected by microphones mounted underneath a moving vehicle. Such…
(more)
▼ This work evaluates the pavement surface condition and detects the pavement subsurface delamination through vehicle noise collected by microphones mounted underneath a moving vehicle. Such measurements will include tire-generated sound, which carries much information about the road condition, as well as noise generated by the environment and vehicle. A careful frequency analysis of the vehicle noise is carried out to localize the frequency range for surface characteristics and subsurface delamination respectively. The Principal Component Analysis (PCA) method is applied to differentiate important information about the road condition from noisy data contributions collected while the vehicle is moving. The analysis begins with acoustic pressure measurements made over constant and known road conditions. Fourier transforms are taken over various time windows and a PCA is performed over the resulting vectors, yielding a set of principal component vectors for the road condition. The condition of each road section is characterized by a set of principal component vectors. Pavement macrotexture Mean Texture Depth (MTD) is predicted from the principal component vector and then projected to the overall pavement condition index (PCI) as well as the pavement friction and uniformity evaluation. Pavement subsurface delamination is also detected from the principal component vector. The significant accomplishments of this study are as follows: (1) localize the frequency ranges of vehicle noise related to pavement surface and subsurface features respectively; (2) demonstrate the potential for PCA to reduce noise and illustrate the procedure to apply PCA in frequency domain for noise filtering; (3) find the relationship between MTD, sound pressure and driving speed; (4) optimize the microphone placement for data collection for the MTD prediction; (5) develop a calibration-free method for the MTD prediction with an error of 16%; (6) use the predicted Equivalent MTD found by the PCA Energy Method to explore pavement friction prediction, construction non-segregation evaluation, and the contribution to PCI prediction from the acoustic aspect; (7) differentiate the stiffness of the top layer pavement within 10 cm of surface from tire/road noise, and (8) detect the subsurface delamination from the shift of frequency in peak sound pressure level.
Subjects/Keywords: macrotexture depth (MTD); Pavement Condition Assessment; Pavement Condition Index (PCI); Pavement Subsurface Debonding; Principal Component Analysis (PCA); Tire/Road Noise; Civil Engineering; Pavements; Deterioration; Evaluation; Composite materials; Delamination; Traffic noise; Measurement; Motor vehicles; Noise; Data processing
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APA ·
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Manager
APA (6th Edition):
Zhang, Y. (2015). Use of vehicle noise for roadway distress detection and assessment. (Doctoral Dissertation). Northeastern University. Retrieved from http://hdl.handle.net/2047/d20009290
Chicago Manual of Style (16th Edition):
Zhang, Yiying. “Use of vehicle noise for roadway distress detection and assessment.” 2015. Doctoral Dissertation, Northeastern University. Accessed September 23, 2019.
http://hdl.handle.net/2047/d20009290.
MLA Handbook (7th Edition):
Zhang, Yiying. “Use of vehicle noise for roadway distress detection and assessment.” 2015. Web. 23 Sep 2019.
Vancouver:
Zhang Y. Use of vehicle noise for roadway distress detection and assessment. [Internet] [Doctoral dissertation]. Northeastern University; 2015. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/2047/d20009290.
Council of Science Editors:
Zhang Y. Use of vehicle noise for roadway distress detection and assessment. [Doctoral Dissertation]. Northeastern University; 2015. Available from: http://hdl.handle.net/2047/d20009290
Brno University of Technology
21.
Pfeiferová, Magdaléna.
Nové směry v oblasti asfaltových koberců mastixových
.
Degree: 2012, Brno University of Technology
URL: http://hdl.handle.net/11012/11297
► Práce se skládá ze dvou částí. První část je zaměřená na stanovení protismykových vlastností na zkušebním úseku na ulici Vídeňská. Protismykové vlastnosti budou zjišťovány pomocí…
(more)
▼ Práce se skládá ze dvou částí. První část je zaměřená na stanovení protismykových vlastností na zkušebním úseku na ulici Vídeňská. Protismykové vlastnosti budou zjišťovány pomocí kyvadla a současně se stanoví makrotextura. Mikrotextura se změří pomocí odměrné metody. V druhé části se snažíme získat první zkušenosti s návrhem a zkoušením nízkohlučných asfaltových koberců mastixových. Stanovujeme jejich základní vlastnosti a současně je porovnáváme se standardním asfaltovým kobercem mastixovým. Pro porovnání jsou použity dva různé druhy asfaltových pojiv. Srovnávána je odolnost vůči účinkům vody, odolnost proti tvorbě trvalých deformací, a moduly tuhosti.; The work consists of two parts. The first part is focused on the determination of an anti-skid properties of the test section on Vídenská street. The anti-skid properties will be measured using a pendulum tester and
macrotexture will be set at the same time. Microtexture will be measured using a volumetric patch technique. In the second part we will try to gain an initial experience with design and testing of a low noise stone mastic asphalt. We will set basic characteristics and at the same time compare with a standard stone mastic asphalt. For the comparison two various bituminous binders are used. The water sensitivity, resistance against rutting and stiffness moduli are compared.
Advisors/Committee Members: Varaus, Michal (advisor).
Subjects/Keywords: Protismykové vlastnosti;
drsnost;
makrotextura;
mikrotextura;
kyvadlo;
odměrná metoda;
asfaltové koberce mastixové;
nízkohlučné asfaltové koberce mastixové;
odolnost vůči účinkům vody;
odolnost proti tvorbě trvalých deformací;
moduly tuhosti;
anti-skid properties;
roughness;
macrotexture;
microtexture;
pendulum tester;
volumetric patch technique;
stone mastic asphalt;
low noise stone mastic asphalt;
the water sensitivity;
resistance against rutting;
stiffness moduli
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APA (6th Edition):
Pfeiferová, M. (2012). Nové směry v oblasti asfaltových koberců mastixových
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/11297
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pfeiferová, Magdaléna. “Nové směry v oblasti asfaltových koberců mastixových
.” 2012. Thesis, Brno University of Technology. Accessed September 23, 2019.
http://hdl.handle.net/11012/11297.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pfeiferová, Magdaléna. “Nové směry v oblasti asfaltových koberců mastixových
.” 2012. Web. 23 Sep 2019.
Vancouver:
Pfeiferová M. Nové směry v oblasti asfaltových koberců mastixových
. [Internet] [Thesis]. Brno University of Technology; 2012. [cited 2019 Sep 23].
Available from: http://hdl.handle.net/11012/11297.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pfeiferová M. Nové směry v oblasti asfaltových koberců mastixových
. [Thesis]. Brno University of Technology; 2012. Available from: http://hdl.handle.net/11012/11297
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
22.
Silva, Patricia Barboza da.
Estudo em laboratório e em campo de misturas asfálticas SMA 0/8S.
Degree: Mestrado, Engenharia de Transportes, 2005, University of São Paulo
URL: http://www.teses.usp.br/teses/disponiveis/3/3138/tde-31082006-134522/
;
► Esta pesquisa foi baseada em um projeto de Stone Matrix Asphalt - SMA na faixa 0/8S com asfalto CAP 20, feito para a execução de…
(more)
▼ Esta pesquisa foi baseada em um projeto de Stone Matrix Asphalt - SMA na faixa 0/8S com asfalto CAP 20, feito para a execução de revestimento delgado em trecho experimental na Rodovia Presidente Dutra, ligando São Paulo ao Rio de Janeiro. A ocorrência de alguns defeitos neste trecho experimental motivou o estudo de misturas SMA 0/8S alternativas empregando dois asfaltos convencionais: CAP 20 e CAP 50/60, e dois modificados por polímeros: um com 3,0% de SBS e outro com 6,5% de SBS. Foram realizados ensaios laboratoriais para a verificação da dosagem das misturas asfálticas e determinação de propriedades mecânicas em laboratório por meio de ensaios de deformação permanente em trilha de roda, de resistência à tração por compressão diametral e de módulo de resiliência. Observou-se que o uso de asfalto modificado por polímero e do asfalto convencional CAP 50/60 acarreta uma redução significativa de afundamentos em trilha de roda. O módulo de resiliência a 25°C também apresenta redução de valor nas amostras com asfalto modificado por polímero e com CAP 50/60, em comparação com o convencional CAP 20. A resistência à tração sofre pouca variação quando se comparam os asfaltos empregados, considerando-se ensaios realizados na mesma temperatura. Foram feitos ensaios em campo para a avaliação funcional e de aderência no trecho experimental da Rodovia Presidente Dutra, tendo sido realizados monitoramentos logo após a execução do trecho e decorridos 2 anos e 7 meses de operação. Os resultados demonstraram que o revestimento do trecho experimental apresenta atualmente poucos defeitos de superfície, com fechamento da macrotextura nas trilhas de roda e pequena diminuição do conforto ao rolamento.
This research was based on a Stone Matrix Asphalt SMA in the band 0/8S design made with asphalt binder AC 20, used as a thin wearing course of a test section on the Presidente Dutra Highway, that connects São Paulo to Rio de Janeiro. The occurrence of some distresses in the test section motivated the study of alternative SMA 0/8S mixtures using two conventional asphalt binders: AC 20 and AC 50/60, and two modified by polymer: one with 3.0% of SBS and other with 6.5% of SBS. Laboratory tests were conducted to verify the mix design and to determine their mechanical behavior such as the resistance against rutting, the indirect tensile strength and the resilient modulus. It was observed that the use of SBS polymer modified binders and asphalt binder AC 50/60 causes a significant reduction of rutting. The resilient modulus at 25°C also presents a reduction in the samples with SBS polymer modified binders and AC 50/60 in comparison with AC 20. The indirect tensile strength suffers little variation across the different types of asphalt binders, tested at the same temperature. Field tests related to functional evaluation and skid-resistance of the test section were carried out. The test section was monitored immediately following the construction and after 2 years and 7 months of continuous use. The results showed that the wearing coarse…
Advisors/Committee Members: Bernucci, Liedi Legi Bariani.
Subjects/Keywords: asfaltos convencionais; asfaltos modificados; asphalt binder; conforto ao rolamento; deformação permanente; indirect tensile strength; macrotextura; macrotexture; modified binder; módulo de resiliência; resilient modulus; resistência à tração por compressão diametral; riding quality; rutting; SMA; SMA
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Silva, P. B. d. (2005). Estudo em laboratório e em campo de misturas asfálticas SMA 0/8S. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/3/3138/tde-31082006-134522/ ;
Chicago Manual of Style (16th Edition):
Silva, Patricia Barboza da. “Estudo em laboratório e em campo de misturas asfálticas SMA 0/8S.” 2005. Masters Thesis, University of São Paulo. Accessed September 23, 2019.
http://www.teses.usp.br/teses/disponiveis/3/3138/tde-31082006-134522/ ;.
MLA Handbook (7th Edition):
Silva, Patricia Barboza da. “Estudo em laboratório e em campo de misturas asfálticas SMA 0/8S.” 2005. Web. 23 Sep 2019.
Vancouver:
Silva PBd. Estudo em laboratório e em campo de misturas asfálticas SMA 0/8S. [Internet] [Masters thesis]. University of São Paulo; 2005. [cited 2019 Sep 23].
Available from: http://www.teses.usp.br/teses/disponiveis/3/3138/tde-31082006-134522/ ;.
Council of Science Editors:
Silva PBd. Estudo em laboratório e em campo de misturas asfálticas SMA 0/8S. [Masters Thesis]. University of São Paulo; 2005. Available from: http://www.teses.usp.br/teses/disponiveis/3/3138/tde-31082006-134522/ ;
. 
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