Document Type
Paper
Keywords
Fatigue, Residual Stress, Shot Peening, Compression Spring, X-Ray Diffraction
DOI
10.5703/1288284317924
Location
STEW 202
Start Date
23-9-2025 10:45 AM
Abstract
The compression spring in this test study is typical of one used in a demanding off-road vehicle suspension. The cyclic loads applied during fatigue tests were severe enough to cause failure in approximately 11,000 cycles without shot peening.
The objectives of this study were the following: (1) Design a compression spring similar to those used in the off-road recreational industry. (2) Design & manufacture a fatigue test stand that could withstand high loads for months of testing. (3) Generate a matrix of shot peening treatments to produce different amounts of residual compressive stress. (4) Measure the shot peening residual compressive stress via X-Ray Diffraction (XRD). (5) Correlate the residual stress to fatigue life performance. (6) Evaluate the effects of a post shot peening bake cycle on fatigue performance.
Included in
Military Vehicles Commons, Other Materials Science and Engineering Commons, Other Mechanical Engineering Commons
The Effects of Shot Peening Highly Loaded Compression Springs
STEW 202
The compression spring in this test study is typical of one used in a demanding off-road vehicle suspension. The cyclic loads applied during fatigue tests were severe enough to cause failure in approximately 11,000 cycles without shot peening.
The objectives of this study were the following: (1) Design a compression spring similar to those used in the off-road recreational industry. (2) Design & manufacture a fatigue test stand that could withstand high loads for months of testing. (3) Generate a matrix of shot peening treatments to produce different amounts of residual compressive stress. (4) Measure the shot peening residual compressive stress via X-Ray Diffraction (XRD). (5) Correlate the residual stress to fatigue life performance. (6) Evaluate the effects of a post shot peening bake cycle on fatigue performance.