Evaluation of friction welded bi-material joint strength subjected to impact loads
In the present work the bond strength of two friction welded polymers was investigated when the bi-material specimens were subjected to projectile impact at 86 ms-1. Two transparent polymer rods of Polycarbonate(PC) and Polymethylmethacrylate Acrylic(PMMA) were joined together using rotary fricti...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications Ltd., Switzerland
2011
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/2920/ http://irep.iium.edu.my/2920/ http://irep.iium.edu.my/2920/ http://irep.iium.edu.my/2920/1/AMR.264-265.719%5B1%5D.pdf |
| Summary: | In the present work the bond strength of two friction welded polymers was investigated when the
bi-material specimens were subjected to projectile impact at 86 ms-1. Two transparent polymer rods
of Polycarbonate(PC) and Polymethylmethacrylate Acrylic(PMMA) were joined together using
rotary friction welding. Specimens were cut into two different batches. In one batch the central
portion of the rod specimens were removed and in the other batch the complete specimens along
with their central portion were retained. When the bi-material specimens were subjected to
projectile impact the cracks initiated in the comparatively brittle PMMA specimens and were able
to propagate across the interface and subsequently into the PC specimen for the first batch of the
specimens while the cracks were either arrested at the bi-material interface or the cracks propagated
along the interface in the second batch of specimens. From the experimental work it was deduced
that the crack propagation along the interface or across the interface could be a good measure of the
bond strength difference of a bi-material joined using rotary friction welding process. Weak point of
rotary friction welding has also been identified |
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