Fatigue Properties Of Vibration Welded Nylon 6 And Nylon 6,6 Butt Joints
Price
Free (open access)
Transaction
Volume
40
Pages
10
Published
2003
Size
496.84 kb
Paper DOI
10.2495/FDM030011
Copyright
WIT Press
Author(s)
K. Y. Tsang, D. L. DuQuesnay & P. J. Bates
Abstract
Fatigue properties of vibration welded nylon 6 and nylon 6,6 butt joints K. Y. Tsang, D. L. DuQuesnay & P. J. Bates Royal Military College of Canada, Kingston, Ontario, Canada Abstract The fatigue properties of vibration welded butt joints in two commonly used thermoplastics, nylon 6 and nylon 6,6, are examined in this paper. Plaques were welded at 212 Hz and at an amplitude of 1.8 mm to a weld penetration of 1.5 rnm. Dog-bone coupons were machined from the welded plaques and then fatigue cycled at frequencies ranging from 3 to 10 Hz with a stress ratio of R=0.1 in load control. All coupons failed by fatigue initiated at the weld. Stress-life data were generated for high pressure and low pressure welding conditions. They all appear to have similar fatigue behaviour with the exception of nylon 6 welded in high pressure. The temperature rise in the weld region during testing was found to be insignificant and no physical thermal damage was observed. Vibration welding of these materials appears to
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