SYMPOSIA PAPER Published: 01 January 1976
STP27901S

Fatigue Testing Using a Digital Computer-Based System

Source

The use of a digital computer-based materials test system for evaluating the fatigue resistance of metals is described. Some examples of the types of tests employed in fatigue research are given. These include tests involving the control of strain with time such as cyclic stress-strain and low cycle fatigue. In addition, experiments are described that require the control of variables that must be calculated from the real time response of the specimen. Included are cyclic plastic strain control and tests in which the ratio of plastic to elastic cyclic strains is held constant.

These common fatigue evaluation tests are shown to be quickly and easily programmed through the use of an operator oriented interactive computer language. On-line data reduction capabilities of the system are shown to produce test results in a readily useable format.

Author Information

Donaldson, KH
Northrup Corporation, Hawthorne, Calif.
Dittmer, DF
Northrup Corporation, Hawthorne, Calif.
Morrow, J
Northrup Corporation, Hawthorne, Calif.
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Details
Developed by Committee: E08
Pages: 27–49
DOI: 10.1520/STP27901S
ISBN-EB: 978-0-8031-4686-0
ISBN-13: 978-0-8031-0593-5