Analysis of Test System Misalignment in the Creep Test

[+] Author and Article Information
Han C. Wu, T. P. Wang

Division of Materials Engineering, The University of Iowa, Iowa City, Iowa 52242

J. Eng. Mater. Technol 104(4), 280-284 (Oct 01, 1982) (5 pages) doi:10.1115/1.3225077 History: Received July 08, 1980; Online September 15, 2009


An analysis of test system misalignment is presented for the creep test. Sheet type rectangular 1100-0 aluminum specimens are used for discussion. It is found that the creep strain at the geometric centerline of the specimen is different than that at the neutral axis. However, this difference in the creep strain decreases with time. Generally, the effect of misalignment decreases with creep time. Creep tests conducted with long pullrods and large initial strain level (high creep stress) will tend to minimize the effect of misalignment.

Copyright © 1982 by ASME
Topics: Creep , Aluminum , Stress
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