A Portable Residual Stress Analyzer.
Abstract
A portable device for stress measurements based on a position sensitive detector and using a miniature air-cooled X-ray tube was built to demonstrate the potential of such a system. The measuring apparatus, weighing 11 kg, could be held by one person with the electronics housed in a separate cabinet. A variety of steel samples, having from 0 to -700 MPa were tested by comparing measurements made on a diffractometer to those made with the portable device. The device proved to be accurate and accomplished the entire measurement using two psi tilts to a statistical error of less than + or - 40 MPa in under 20 seconds on all samples. (In some cases in 4 seconds.) The portability of the apparatus and rapid measurement time suggest applications for the X-ray stress measurement never possible before, such as on-sight inspection during fabrication or in-field measurements. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 12, 1977
- Accession Number
- ADA041831
Entities
People
- Jerome B. Cohen
- Michael R. James
Organizations
- Northwestern University