Zhang, Yi
(2018)
Research on rupture and drawing behavior of SEPS/HDPE composites.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
We examine the stretching behavior of rubber–plastic composites composed of a layer of styrene-ethylene/propylene–styrene (SEPS) rubber, bonded to a layer of linear high density polyethylene (HDPE) plastic. In tension, the SEPS layer showed homogeneous deformation, whereas the pure HDPE layer usually break in the tensile process. We tested bilayer and trilayer structure composites separately. For bilayer, the experiment result proved that by bonding the SEPS layer, HDPE layer can be stretched to a higher degree without failure, and composite laminates showed behavior intermediate between the plastic and the rubber.
For trilayer, dog-bone shaped samples of rubber, plastic, and SEPS/HDPE trilayer with rubber: plastic thickness ratio in the range of 0.417-3.625 were subjected to uniaxial tension tests. The local stretch and the maximum local stretch was quantified by force-extension measurements and digital image correlation analysis of video recordings of these tests. The specimen result proved that the brittleness of plastic layer in trilayer structure was also reduced. Under the same strain rate, the degree of necking and drawing of trilayer reducing as the rubber: plastic ratio increased.
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Details
| Item Type: |
University of Pittsburgh ETD
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| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
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| Date: |
24 September 2018 |
| Date Type: |
Publication |
| Defense Date: |
16 July 2018 |
| Approval Date: |
24 September 2018 |
| Submission Date: |
18 July 2018 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Number of Pages: |
60 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Mechanical Engineering and Materials Science |
| Degree: |
MS - Master of Science |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
brittle behavior, drawing behavior, high density polyethelene, SEPS rubber |
| Date Deposited: |
24 Sep 2018 13:57 |
| Last Modified: |
24 Sep 2018 13:57 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/34924 |
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