• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 199
  • 72
  • 56
  • 21
  • 17
  • 11
  • 8
  • 6
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • Tagged with
  • 459
  • 110
  • 77
  • 77
  • 59
  • 56
  • 51
  • 50
  • 45
  • 43
  • 43
  • 40
  • 39
  • 35
  • 34
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Consolidation of fiber-reinforced composities with thermoplastic matrices

Bradley, Jurron 05 1900 (has links)
No description available.
12

Microcrystalline cellulose-filled engineering thermoplastic composites /

Kiziltas, Alper, January 2009 (has links)
Thesis (M.S.) in Forest Resources--University of Maine, 2009. / Includes vita. Includes bibliographical references (leaves 128-134).
13

Properties and foaming behaviour of thermoplastic olefin blends based on linear and branched polypropylene

McCallum, Tara J. 15 October 2007 (has links)
The recent commercial availability of branched polypropylenes (PPs) combined with the advent of single-site metallocene catalysts has ignited interest in thermoplastic polyolefin blends (TPOs) with controlled melt strength. These blends have potential applications in a variety of industries including foam processing and extrusion foaming. The main objective of the thesis is to provide a detailed investigation on the rheological, morphological, thermal, mechanical and foaming properties of isotactic polypropylene / high melt strength branched polypropylene homopolymer blends, and of thermoplastic olefin blends using these polypropylenes as matrices. Initial research on the polypropylene blends consisted of a linear high melt flow rate PP and two branched PPs with different melt flow rates. Blends containing branched PPs display evidence of miscibility in the melt state and exhibit high melt elasticity together with significant strain hardening in extensional deformation while retaining good flow properties. Of the two blend systems examined, the blends containing linear and branched PPs with similar melt flow rates have better mechanical properties, higher crystallization temperatures, and higher crystallinities. An investigation into the mechanical, thermal, rheological, morphological, and microcellular foaming behaviour of TPO blends consisting of a blended matrix of linear and branched PP with a dispersed phase of an ethylene-octene copolymer was performed. Blends containing branched PP showed improved stiffness and flexural properties. Given that the morphology and interfacial tension of the blends remain virtually unaffected, these improvements are attributed to the increased crystallinity in the presence of a branched component with higher molecular weight. Varying the amount of branched PP into linear PP during foaming experiments in a batch foaming simulation apparatus caused slower cell growth rates and decreased cell densities, while TPO foams showed polydispersity in the cell sizes, possibly due to the different foaming characteristics of the immiscible components. The addition of talc to TPO blends aims at improving the stiffness and dimensional stability of the material, while lowering material costs. Blends of linear and branched PP with an ethylene-octene copolymer dispersed phase and uncalcinated talc showed similar trends, as well as an expected drop in the elongation at break. There was an increase in the viscosity and crystallinity of the blends, and optimum gains were seen in blends containing 20 wt% branched PP. Increasing the levels of branched PP did not significantly affect the bubble growth rate, or the final cell density during foaming experiments. / Thesis (Master, Chemical Engineering) -- Queen's University, 2007-09-27 16:07:44.202
14

Thermal analysis of the continuous filament winding process

James, Darryl L. 12 1900 (has links)
No description available.
15

On-line consolidation of thermoplastic towpreg composites in filament winding

Wagner, Philip Cameron 12 1900 (has links)
No description available.
16

On-line consolidation mechanisms for thermoplastic composites

Carpenter, Charles E. 05 1900 (has links)
No description available.
17

High energy rate of joining thermoplastic composites using microwaves /

Ku, Harry S. January 2000 (has links)
Thesis (Ph.D.) - Swinburne University of Technology, Industrial Research Institute Swinburne - 2000. / Submitted for the degree of Doctor of Philosophy, Industrial Research Institute Swinburne, Swinburne University of Technology - 2000. Typescript. Includes bibliographical references (p. 172-187).
18

Delamination properties of a vinyl-ester/glass fibre composite toughened by particle-modified interlayers /

Stevanović, Dejan. January 2001 (has links)
Thesis (Ph.D.)--Australian National University, 2001.
19

Adhesion study of thermoplastic polymides with Ti-6Al-4V alloy and PEEK-graphite composites /

Yoon, Tae-Ho, January 1991 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 210-219). Also available via the Internet.
20

Static and fatigue behaviour of thermoplastic composite laminates joined by resistance welding

Dubé, Martine. January 1900 (has links)
Thesis (Ph.D.). / Written for the Dept. of Mecanical Engineering. Title from title page of PDF (viewed 2008/05/09). Includes bibliographical references.

Page generated in 0.0213 seconds