Comparing Rotary Bend Wire Fatigue Test Methods at Different Test Speeds.

ABSTRACT: Given its relatively simple setup and ability to produce results quickly, rotary bend fatigue testing is becoming commonplace in the medical device industry and is the subject of a new standard test method ASTM E2948-14. Although some research has been conducted to determine if results differ for different rotary bend fatigue test setups or test speeds, these parameters have not been extensively studied together. In this work, we investigate the effects of these two parameters on the fatigue life of three commonly used medical device alloys (ASTM F2063 nitinol, ASTM F138 stainless steel, and ASTM F1058 cobalt chromium). Results with three different rotary bend fatigue test setups revealed no difference in fatigue life among those setups. Increasing test speed, however, between 100 and 35,0

SUBMITTER: Weaver JD 

PROVIDER: S-EPMC6128138 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature