SYMPOSIA PAPER Published: 01 January 1963

Empirical Analysis of Fatigue Strength of Pin-Loaded Lug Joints


Fatigue data obtained in an experimental research program on SAE 4340 steel and 2024-T4 aluminum alloy pin-loaded lug joints are analyzed with respect to stresses at the location of failure. These lug joints were subjected to a combined load consisting of a steady-tension component and an alternating, reversed cantilever-type bending moment. The paper reviews briefly the experimental data and presents an approach and an empirical method for failure prediction in pin-loaded lug joints under the above fatigue loading. The nominal stresses at failure are expressed as functions of the material properties, geometric parameters of the joints, and other pertinent factors. The method developed permits correlation of nearly all observed fatigue-test results and appears potentially useful for analyses of other experimental results on pin-loaded lug joints.

Author Information

Mittenbergs, A., A.
Battelle Memorial Inst., Columbus, Ohio.
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Developed by Committee: E08
Pages: 131–149
DOI: 10.1520/STP44464S
ISBN-EB: 978-0-8031-6212-9
ISBN-13: 978-0-8031-6213-6