Crack Growth Retardation in Two Low-Strength Materials Under Displacement Controlled Cyclic Loading

JA Kapp; JH Underwood; JJ Zalinka

doi:10.1520/STP37423S

SYMPOSIA PAPER Published: 01 January 1979

STP37423S

Crack Growth Retardation in Two Low-Strength Materials Under Displacement Controlled Cyclic Loading

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Several experiments have been performed to determine the tolerance to defects of two low-strength materials used on cannon tube components subjected to displacement-controlled fatigue loading. The study was initiated to determine acceptable flaw sizes for hoops used to stabilize large cannons during recoil. A simple specimen was devised to approximate the axisymmetric, displacement-controlled actual loading of hoops. The results show that under this loading, a fatigue failure is not possible in either material because of the combination of the reduced stiffness of the structure containing fatigue cracks and general cross-sectional yielding.

Author Information

Kapp, JA

Benet Weapons Laboratory, U.S. Army Armament Research and Development Command, LCWSL Watervliet Arsenal, Watervliet, N.Y.

Underwood, JH

Benet Weapons Laboratory, U.S. Army Armament Research and Development Command, LCWSL Watervliet Arsenal, Watervliet, N.Y.

Zalinka, JJ

Benet Weapons Laboratory, U.S. Army Armament Research and Development Command, LCWSL Watervliet Arsenal, Watervliet, N.Y.

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Details

Developed by Committee: E28

Pages: 171–181

DOI: 10.1520/STP37423S

ISBN-EB: 978-0-8031-4745-4

ISBN-13: 978-0-8031-0581-2

Crack Growth Retardation in Two Low-Strength Materials Under Displacement Controlled Cyclic Loading

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