Accession Number:

ADA038103

Title:

Comparison of Measuring Times for X-Ray Determination of Residual Stresses: A Normal Detector and a Position Sensitive Detector.

Descriptive Note:

Technical rept.,

Corporate Author:

NORTHWESTERN UNIV EVANSTON ILL DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

Report Date:

1977-03-15

Pagination or Media Count:

16.0

Abstract:

The use of a position sensitive detector PSD in the measurement of residual stress by the X-ray technique has been described previously see T.R. No. 11. To quantify the actual time savings for the stress determination, a complete comparison was carried out between a normal diffractometer measurement and a PSD measurement. The speed of the PSD is dependent on the profile characteristics and the desired accuracy of the measurement. Therefore, measurements were carried out on six steel samples covering the full range of peak breadths and for both a high and a low statistical counting accuracy. In all cases, the PSD was considerably faster than the normal detector, from 100 times quicker for the most favorable case sharp profile, high statistical error to twice as fast broad profile, low statistical error for the least favorable case. Author

Subject Categories:

  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE