Journal article
Analysis of ASTM X-ray shrinkage rating for steel castings
International Journal of Cast Metals Research, Vol.14(3), pp.169-183
11/01/2001
DOI: 10.1080/13640461.2001.11819436
Abstract
This paper presents the results of two different studies that examined the ASTM x-ray shrinkage rating system for radiographs of steel castings. The first study evaluated the repeatability and reproducibility of x-ray shrinkage ratings through a statistical study of 128 x-rays that were each rated seven different times. It was found that the seven ratings for each x-ray were in unanimous agreement on both shrinkage type and level for 12.5% of the x-rays. All of the x-rays that had unanimous agreement for both type and level were either completely sound or very unsound (Level 5). The largest variance was found to occur in Level 2 and 3 x-rays, which had 95% confidence intervals of about ±2 x-ray levels. The average 95% confidence interval for all 128 x-rays was ±1.4. The second study involved an effort to determine the shrinkage severity level of x-rays through digital analysis of scanned radiographs. It was found that defect area and circumference correlated reasonably well with x-ray level, but only if the shrinkage type was correctly determined first.
Details
- Title: Subtitle
- Analysis of ASTM X-ray shrinkage rating for steel castings
- Creators
- K Carlson - Department of Mechanical Engineering, The University of IowaS Ou - Department of Mechanical Engineering, The University of IowaR Hardin - Department of Mechanical Engineering, The University of IowaC Beckermann - Department of Mechanical Engineering, The University of Iowa
- Resource Type
- Journal article
- Publication Details
- International Journal of Cast Metals Research, Vol.14(3), pp.169-183
- Publisher
- Taylor & Francis
- DOI
- 10.1080/13640461.2001.11819436
- ISSN
- 1364-0461
- eISSN
- 1743-1336
- Language
- English
- Date published
- 11/01/2001
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984064254302771
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