SYMPOSIA PAPER Published: 01 January 1994
STP13973S

An Automatic Ultrasonic Fatigue Testing System for Studying Low Crack Growth at Room and High Temperatures

Source

In this paper, an automatic ultrasonic fatigue testing system is presented, including a computer control and acquisition system, a video-camera-television system, an induction heating device, a magneto-strictive vibrator, and other electronic apparatus. The test machine controlled by an IBM PS/2 computer with analog to digital (A/D) and digital to analog (D/A) convertors runs at a very high frequency, about 20 kHz, and it carries out endurance tests and crack growth tests at room or high temperature. In this paper, a S-Ncurve for UDIMET 500 at room temperature and two fatigue crack growth rate (FCGR) curves in near-threshold regime for ASTROLOY at 20 and 400°C under ultrasonic fatigue testing are published.

Author Information

Wu, T
Conservatoire, National des Arts de Métiers, Institute des Technologies et des Matériaux Avancés, Paris, France
Ni, J
Conservatoire, National des Arts de Métiers, Institute des Technologies et des Matériaux Avancés, Paris, France
Bathias, C
Conservatoire, National des Arts de Métiers, Institute des Technologies et des Matériaux Avancés, Paris, France
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Details
Developed by Committee: E08
Pages: 598–607
DOI: 10.1520/STP13973S
ISBN-EB: 978-0-8031-5283-0
ISBN-13: 978-0-8031-1985-7