• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 71
  • 13
  • 13
  • 13
  • 13
  • 13
  • 13
  • 4
  • 4
  • 2
  • 1
  • 1
  • 1
  • Tagged with
  • 107
  • 107
  • 107
  • 18
  • 16
  • 14
  • 12
  • 11
  • 10
  • 9
  • 9
  • 7
  • 7
  • 7
  • 6
  • 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

Microstructure and the distribution of tensile properties in injection molded polyethylene

Moy, Francis H. January 1980 (has links)
Studies conducted by many workers in recent years have indicated substantial anisotropies in injection molded thermoplastics. These anisotropies have been associated with differences in morphology (crystallinity) and orientation (shrinkage and birefringences) at various positions in the molding. They are reflected by anisotropies in tensile properties measured at different points or in different directions. However, no work has been reported to quantitatively relate the distributions in tensile properties. The present work represents an attempt to meet this challenge. / Microstructure determination is achieved by making the following measurements on microtomed specimens at different positions in the polyethylene moldings: density, sonic speed, birefringence, wide-angle X-ray diffraction, dichroic ratio, and polarized light photomicrography. The above tests yield data relating to crystallinity and orientation functions for both the crystalline and amorphous phases. They also yield sufficient data to check the consistency of results obtained by the different techniques. Tensile properties are measured on microtomed samples obtained from the same regions tested for microstructure. Finally, the distributions of tensile and sonic moduli in the molding are estimated by employing some of the theoretical techniques proposed in the literature. The results show very good agreement between theoretical predictions and experimental data relating to the distributions of both sonic moduli and tensile moduli.
12

Energy-efficient control in injection molding /

Yao, Ke. January 2008 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2008. / Includes bibliographical references (leaves 194-209). Also available in electronic version.
13

Design analysis of a lomolding machine /

Goussard, Charl Leonard. January 2007 (has links)
Dissertation (PhD)--University of Stellenbosch, 2007. / Bibliography. Also available via the Internet.
14

A study on material distribution, mechanical properties, and numerical simulation in co-injection molding

Srithep, Yottha, January 2008 (has links)
Thesis (M.S.)--Ohio State University, 2008. / Title from first page of PDF file. Includes bibliographical references (p. 106-107).
15

Study of thin-wall injection molding

Xu, Guojung, January 2004 (has links)
Thesis (Ph. D.)--Ohio State University, 2004. / Title from first page of PDF file. Document formatted into pages; contains xxi, 238 p.; also includes graphics Includes bibliographical references (p. 231-238). Available online via OhioLINK's ETD Center
16

Ejection forces and static friction coefficients for rapid tooled injection mold inserts

Kinsella, Mary E., January 2004 (has links)
Thesis (Ph. D.)--Ohio State University, 2004. / Title from first page of PDF file. Document formatted into pages; contains xvi, 206 p.; also includes graphics (some col.). Includes bibliographical references (p. 167-173). Available online via OhioLINK's ETD Center
17

Slicing of 3D CAD models for mould design /

Wong, Teng. January 1998 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 174-176).
18

Mold thermal design and quasi steady state cycle time analysis in injection molding /

Hioe, Yunior, January 2006 (has links)
Thesis (M.S.)--Ohio State University, 2006. / Includes bibliographical references (leaf 111). Available online via OhioLINK's ETD Center
19

In-mold melt-front rate control using capacitive transducer in injection molding /

Zhou, Feng. January 2008 (has links)
Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2008. / Includes bibliographical references (p. 89-102).
20

Microstructure and the distribution of tensile properties in injection molded polyethylene

Moy, Francis H. January 1980 (has links)
No description available.

Page generated in 0.1722 seconds