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You searched for subject:(pepin). Showing records 1 – 3 of 3 total matches.

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Penn State University

1. Patten, Carl Henry. Processing Parameters for Out-of-autoclave Pre-impregnated Discontinuous Carbon Fiber Composites.

Degree: 2013, Penn State University

Carbon fiber materials used in the aerospace industry contain predominately continuous carbon fiber (CCF). This inextensible fiber material is advantageous for manufacturing high performance aerospace grade components because of its superior mechanical properties. Unfortunately, when compared to automated metal fabrication or injection molding processes, high production costs plague the manufacturing of CCF composite components. Discontinuous Carbon Fiber (DCF) materials have been developed for production of structural composite components. DCF materials were able to form complex geometries due to enhanced fiber axis stretching, in-plane shear, and inter-ply shear. Use of DCF materials with low cost advanced forming technologies has increased but transition of formed products is limited to simple geometric shapes due to process limitations caused by the occurrence of deleterious deformations. A single diaphragm forming process was utilized to form pre-collated laminates of pre-impregnated DiscoTexTM into a sine wave spar for use in aerospace wing structures. Sine wave spars are opposite sign doubly curved geometries that are difficult to form. DiscoTexTM is a five harness satin woven DCF that was pre- impregnated with an out of autoclave resin system, Cytec Cycom 5320-1. The forming parameters manipulated were: diaphragm stiffness, forming temperature, forming time, stretch in the warp direction, stretch in the fill direction, laminate thickness, laminate size and lamina fiber orientation on component quality. The effect these parameters had on the developed in-plane shear strains were identified to determine the forming characteristics of the DCF material. In order of significance, the research results showed that forming temperature, forming time, laminate size and diaphragm stiffness had the greatest effect on in-plane shear strain. These research conclusions enable the manufacturing process of this material to produce quality composite components with the ability to identify forming parameters from the inception of the process. Advisors/Committee Members: Charles E Bakis, Thesis Advisor/Co-Advisor, Kevin L Koudela, Thesis Advisor/Co-Advisor.

Subjects/Keywords: discontinuous carbon fiber; composite; discontinuous; five harness; diaphragm forming; processing parameters; discotex; pepin

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

APA (6th Edition):

Patten, C. H. (2013). Processing Parameters for Out-of-autoclave Pre-impregnated Discontinuous Carbon Fiber Composites. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/19814

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):

Patten, Carl Henry. “Processing Parameters for Out-of-autoclave Pre-impregnated Discontinuous Carbon Fiber Composites.” 2013. Thesis, Penn State University. Accessed March 04, 2021. https://submit-etda.libraries.psu.edu/catalog/19814.

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

MLA Handbook (7th Edition):

Patten, Carl Henry. “Processing Parameters for Out-of-autoclave Pre-impregnated Discontinuous Carbon Fiber Composites.” 2013. Web. 04 Mar 2021.

Vancouver:

Patten CH. Processing Parameters for Out-of-autoclave Pre-impregnated Discontinuous Carbon Fiber Composites. [Internet] [Thesis]. Penn State University; 2013. [cited 2021 Mar 04]. Available from: https://submit-etda.libraries.psu.edu/catalog/19814.

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

Council of Science Editors:

Patten CH. Processing Parameters for Out-of-autoclave Pre-impregnated Discontinuous Carbon Fiber Composites. [Thesis]. Penn State University; 2013. Available from: https://submit-etda.libraries.psu.edu/catalog/19814

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


University of Wisconsin – La Cross

2. Trapp, Kathleen. Survey of the benthic macroinvertebrate community of Lake Pepin and a study of the influence of various physical factors on the distribution of selected taxa.

Degree: 1979, University of Wisconsin – La Cross

The macroinvertebrate community of Lake Pepin on the Upper Mississippi River was sampled twice during the summer of 1977 in order to determine. The taxonomic groups present and what portion of the total standing crop each group represented. Using a petite Ponar dredge, 118 and 127 samples were collected during Sampling Periods I and II, respectively. A total of 38,874 individuals, representing 54 taxa, were collected. It was determined that the family Chironomidae comprised 56% of the benthic standing crop. Chironomus sp., and more specifically the pollution-tolerant midge C. plumosus, represented over 53% of the total number of individuals. Other dominant taxa were the Oligochaeta (40.37%), the Sphaeriidae (1%), and the Hirudinea (0.23%). The remaining taxonomic groups represented 5.43% of the standing crop. Only 18 nymphs of the genus Hexagenia were collected during the study. The pronounced domination of the benthic community by C. plumosus and the rare occurrence of the once prominent mayfly, Hexagenia, reflects the continued perturbation of the influent water of Lake Pepin. In addition to the survey, correlation coefficients were calculated in order to determine the relationship between seven selected taxonomic groups and various physical factors (substrate particle size, dissolved oxygen, depth, and the % total sediment organics). Statistical analyses indicated that invertebrate distribution was effected by the physical factors examined and was often a function of feeding habit, physiological adaptations, and stage of larval development. Multiple correlation analyses determined that the physical factors investigated played a significant role in influencing the selected taxa. Advisors/Committee Members: Claflin, Thomas, Auippa, Thomas, Grimes, D., Rada, Ronald.

Subjects/Keywords: Invertebrate populations  – Pepin; Lake (Minn. and Wis.)

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

APA (6th Edition):

Trapp, K. (1979). Survey of the benthic macroinvertebrate community of Lake Pepin and a study of the influence of various physical factors on the distribution of selected taxa. (Thesis). University of Wisconsin – La Cross. Retrieved from http://digital.library.wisc.edu/1793/47616

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):

Trapp, Kathleen. “Survey of the benthic macroinvertebrate community of Lake Pepin and a study of the influence of various physical factors on the distribution of selected taxa.” 1979. Thesis, University of Wisconsin – La Cross. Accessed March 04, 2021. http://digital.library.wisc.edu/1793/47616.

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

MLA Handbook (7th Edition):

Trapp, Kathleen. “Survey of the benthic macroinvertebrate community of Lake Pepin and a study of the influence of various physical factors on the distribution of selected taxa.” 1979. Web. 04 Mar 2021.

Vancouver:

Trapp K. Survey of the benthic macroinvertebrate community of Lake Pepin and a study of the influence of various physical factors on the distribution of selected taxa. [Internet] [Thesis]. University of Wisconsin – La Cross; 1979. [cited 2021 Mar 04]. Available from: http://digital.library.wisc.edu/1793/47616.

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

Council of Science Editors:

Trapp K. Survey of the benthic macroinvertebrate community of Lake Pepin and a study of the influence of various physical factors on the distribution of selected taxa. [Thesis]. University of Wisconsin – La Cross; 1979. Available from: http://digital.library.wisc.edu/1793/47616

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


Université de Montréal

3. Grondin, Gilles. Marcel Pepin, l’homme du contre-pouvoir.

Degree: 2015, Université de Montréal

Subjects/Keywords: Marcel Pepin; Relations industrielles; Relations du travail; Syndicats; CSN; Leadership; Pensée syndicale; Politique québécoise; Socialisme; Confédération mondiale du travail (CMT); Marcel Pepin; Industrial relations; Labour relations; Unions; CSN; Leadership; Labour union thought; Quebec politics; Socialism; World confederation of labour (WCL); Sociology - Industrial and Labor Relations / Sociologie - Travail et relations industrielles (UMI : 0629)

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

APA (6th Edition):

Grondin, G. (2015). Marcel Pepin, l’homme du contre-pouvoir. (Thesis). Université de Montréal. Retrieved from http://hdl.handle.net/1866/11995

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):

Grondin, Gilles. “Marcel Pepin, l’homme du contre-pouvoir.” 2015. Thesis, Université de Montréal. Accessed March 04, 2021. http://hdl.handle.net/1866/11995.

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

MLA Handbook (7th Edition):

Grondin, Gilles. “Marcel Pepin, l’homme du contre-pouvoir.” 2015. Web. 04 Mar 2021.

Vancouver:

Grondin G. Marcel Pepin, l’homme du contre-pouvoir. [Internet] [Thesis]. Université de Montréal; 2015. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1866/11995.

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

Council of Science Editors:

Grondin G. Marcel Pepin, l’homme du contre-pouvoir. [Thesis]. Université de Montréal; 2015. Available from: http://hdl.handle.net/1866/11995

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

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