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Title: The Effects of Surface Treatment on Torsonal Fatigue Failure in Recoil Springs
Author: R.R.Fujczak, J.A. Kapp, C.J. Nolan
Source: Tech Report ARCCB-TR-92045, US Army R/D Engr Ctr.
Publication year 1992
Document number: 1992033
Number of pages: 25
Abstract:
Large recoil springs are used in applications that require huge stored energy. These springs are usually made from very high strength materials in very large section sizes
for spring applications; wire diameters are on the order of one inch. Since the loading of springs produces a state of stress that is primarily torsion, and furthermore,
since the springs must perform for many recoil cycles, the material property that governs the performance of these spring is the torsional fatigue property of the
springmaterial, There is little or no available torsion fatigue data for the class of materials used in these springs, which suggests that the springs were designed
considering static strength or using empirical approaches. Since there have been some historical fatigue failure prjoblems with recoil springs, a program to measure the
torsional fatigue properties of the class of materials used for the recoil springs should be supported.
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