Accession Number:

ADA113752

Title:

Effect of Gradients in Multi-Axial Stress States on Residual Stress Measurements with X-Rays.

Descriptive Note:

Technical rept.,

Corporate Author:

NORTHWESTERN UNIV EVANSTON IL DEPT OF MATERIALS SCIENCE

Personal Author(s):

• Noyan,I. C.

Report Date:

1982-03-30

Pagination or Media Count:

35.0

Abstract:

The assumption, that stress components in the direction of the surface normal are negligible in traditional residual stress determination methods by x-rays, has been recently disapproved. In this paper we investigate the effect of normal stresses on the accuracy of these traditional methods. It is shown that appreciable error can exist in surface stresses determined by such methods, if normal stresses are present. New procedures are proposed to minimize these errors. Author

Descriptors:

• *X rays
• *Measurement
• *Residual stress
• Gradients
• Surfaces
• Parts
• Stresses
• Axes
• Accuracy
• Errors
• Methodology

Subject Categories:

• Printing and Graphic Arts
• Electricity and Magnetism
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE