Plastic Strain Fatigue in Air and Vacuum

[+] Author and Article Information
D. E. Martin

General Motors Corp., Warren, Mich.

J. Basic Eng 87(4), 850-856 (Dec 01, 1965) (7 pages) doi:10.1115/1.3650829 History: Received March 11, 1965; Online November 03, 2011


The plastic strain-life relation for several ductile materials is examined in both air and vacuum and interpreted in light of the well-known plastic strain (ΔξP ) life (N) relation, N1/2 ΔξP = constant. These data indicate that the relation applies as well in vacuum as in air and, in certain cases, better and to a much larger number of cycles. Further experiments are described in which these materials are repeatedly fractured and rejoined in vacuum, exhibiting a very substantial capacity for vacuum cold reweldment of completely fractured specimens.

Copyright © 1965 by ASME
Topics: Fatigue , Vacuum , Cycles
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