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Application of the Mathar method to identify internal stress variation in steel as a welding process result
Abstract
The paper deals with the method to identify internal stresses in two-dimensional steel members. Steel members were investigated in the delivery stage and after assembly, by means of electric-arc welding. In order to perform the member assessment two methods to identify the stress variation were applied. The first is a non-destructive measurement method employing local external magnetic field and to detecting the induced voltage, including Barkhausen noise The analysis of the latter allows to assess internal stresses in a surface layer of the material. The second method, essential in the paper, is a semi-trepanation Mathar method of tensometric strain variation measurement in the course of a controlled void-making in the material. Variation of internal stress distribution in the material led to the choice of welding technology to join. The assembly process altered the actual stresses and made up new stresses, triggering post-welding stresses as a response for the excessive stress variation.
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1515/ceer-2017-0024
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- Category:
- Articles
- Type:
- artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
- Published in:
-
Civil and Environmental Engineering Reports
no. 25,
pages 125 - 136,
ISSN: 2080-5187 - Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Kowalski D.: Application of the Mathar method to identify internal stress variation in steel as a welding process result// Civil and Environmental Engineering Reports. -Vol. 25., iss. 2 (2017), s.125-136
- DOI:
- Digital Object Identifier (open in new tab) 10.1515/ceer-2017-0024
- Verified by:
- Gdańsk University of Technology
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