Residual Stresses at Weld Repairs in Pressure Vessels: Quarterly Progress Report, September 1 - December 1,1977
- Battelle Columbus Labs., OH (United States)
The objective of the research reported is to examine the residual stresses near a weld repair in view of the recent developments in computational modeling for predicting weld-induced residual stresses. A framework for such a study exists through the results of the Heavy Section Steel Technology (HSST) program. Specifically, weld repairs have been conducted on intermediate sized test vessels and their prolongations as part of the HSST program. Measurements have been taken on sectioned prolongations to estimate the residual stresses in the weld and the adjacent base material. The study of weld repairs is divided into two parts. In the first part, a computational model is to be developed and evaluated based on the ability to predict residual stresses obtained from the weld repair region in the prolongation of the HSST ITV-8 vessel. The second part of the study involves a sensitivity study of some of the weld parameters to establish their effect on the final residual stress field. The purpose of the sensitivity study is to explore the possibility of reducing or redistributing residual stresses by altering the weld repair procedure. Efforts during the reporting period concentrated on the developmental aspects of the temperature and residual stress models.
- Research Organization:
- Battelle Columbus Labs., OH (United States)
- Sponsoring Organization:
- USNRC
- DOE Contract Number:
- AT(49-24)-0293
- OSTI ID:
- 6768267
- Report Number(s):
- NUREG/CR--0037; BMI--1994
- Country of Publication:
- United States
- Language:
- English
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