A Comparison of Residual Stress Measuring Techniques: Their Strengths and Weaknesses
ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ FIRE CONTROL AND SMALL CALIBER WEAPON SYSTEMS LAB
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Ongoing in-house work on the measurement of residual stress in Army Materiel by both X-ray and strain gage mechanical relaxation methods is presented and compared. The X-ray portion includes problems associated with the calculation of stresses in highly textured samples while the strain gage portion describes effects produced by various mechanical methods to partially relieve the strain fields sensed by the active gage elements. Comparisons are also made of the errors introduced by considering the active element in the strain gage rosette as a point gage instead of one with finite length.
- Solid State Physics