SYMPOSIA PAPER Published: 01 January 1986

Impact Fatigue of Polymers Using an Instrumented Drop Tower Device


Using low and constant-impact energy, a relatively simple method of impact fatigue has been devised to provide toughness measurements on polymers. Crystalline polymers, particularly the nylons and polyacetal, appear to have better fatigue performance than noncrystalline polymers. Fatigue curves that are normalized with the fracture area can potentially detect the influence of crystalline morphology on fatigue. Using retained energy values and fracture area measurements from each impact, an estimate of the fracture energy is obtained. The higher fracture energy values obtained in fatigue, over those obtained in single-blow impacts, indicate that different energy absorption processes occur in single- and multiple-impact testing.

Author Information

Adams, GC
E. I. du Pont de Nemours & Co., Inc., Wilmington, DE
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: D20
Pages: 281–301
DOI: 10.1520/STP19385S
ISBN-EB: 978-0-8031-4996-0
ISBN-13: 978-0-8031-0937-7