SYMPOSIA PAPER Published: 01 January 1990

A Test System for Computer Controlled Thermomechanical Fatigue Testing


This paper describes a computer controlled testing system that is capable of performing complex thermomechanical fatigue tests. Three different tests have been developed: 1. High temperature compression (HTC) tests in which the gage length of the specimen is held at constant length and the mechanical strain is totally imposed by the triangular temperature cycle. 2. High temperature tension (HTT) tests in which the mechanically imposed length change is exactly double the thermally induced length change. 3. Multiple isothermal deformation (MID) tests for which the deformations occur isothermally and the temperature is changed every half cycle while maintaining constant mechanical strain.

Author Information

Jones, WB
Sandia National Laboratories, Albuquerque, NM
Schmale, DT
Sandia National Laboratories, Albuquerque, NM
Bourcier, RJ
Sandia National Laboratories, Albuquerque, NM
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Developed by Committee: E08
Pages: 38–51
DOI: 10.1520/STP25029S
ISBN-EB: 978-0-8031-5149-9
ISBN-13: 978-0-8031-1401-2