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Title: An integrated model for optimizing weld quality

Abstract

Welding has evolved in the last few decades from almost an empirical art to an activity embodying the most advanced tools of, various basic and applied sciences. Significant progress has been made in understanding the welding process and welded materials. The improved knowledge base has been useful in automation and process control. In view of the large number of variables involved, creating an adequately large database to understand and control the welding process is expensive and time consuming, if not impractical. A recourse is to simulate welding processes through a set of mathematical equations representing the essential physical processes of welding. Results obtained from the phenomenological models depend crucially on the quality of the physical relations in the models and the trustworthiness of input data. In this paper, recent advances in the mathematical modeling of fundamental phenomena in welds are summarized. State of the art mathematical models, advances in computational techniques, emerging high performance computers, and experimental validation techniques have provided significant insight into the fundamental factors that control the development of the weldment. Current status and scientific issues in heat and fluid flow in welds, heat source metal interaction, and solidification microstructure are assessed. Future research areas of majormore » importance for understanding the fundamental phenomena in weld behavior are identified.« less

Authors:
;  [1]; ;  [2]
  1. Oak Ridge National Lab., TN (United States)
  2. Concurrent Technologies Corp., Johnstown, PA (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
87854
Report Number(s):
CONF-9509118-6
ON: DE95013220
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Conference
Resource Relation:
Conference: 7. Conference on modeling of casting, welding and advanced solidification processes, London (United Kingdom), 10-15 Sep 1995; Other Information: PBD: [1995]
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; WELDING; WELDED JOINTS; COMPUTERIZED SIMULATION; QUALITY CONTROL; PROCESS CONTROL

Citation Formats

Zacharia, T., Radhakrishnan, B., Paul, A.J., and Cheng, C. An integrated model for optimizing weld quality. United States: N. p., 1995. Web.
Zacharia, T., Radhakrishnan, B., Paul, A.J., & Cheng, C. An integrated model for optimizing weld quality. United States.
Zacharia, T., Radhakrishnan, B., Paul, A.J., and Cheng, C. Thu . "An integrated model for optimizing weld quality". United States. doi:. https://www.osti.gov/servlets/purl/87854.
@article{osti_87854,
title = {An integrated model for optimizing weld quality},
author = {Zacharia, T. and Radhakrishnan, B. and Paul, A.J. and Cheng, C.},
abstractNote = {Welding has evolved in the last few decades from almost an empirical art to an activity embodying the most advanced tools of, various basic and applied sciences. Significant progress has been made in understanding the welding process and welded materials. The improved knowledge base has been useful in automation and process control. In view of the large number of variables involved, creating an adequately large database to understand and control the welding process is expensive and time consuming, if not impractical. A recourse is to simulate welding processes through a set of mathematical equations representing the essential physical processes of welding. Results obtained from the phenomenological models depend crucially on the quality of the physical relations in the models and the trustworthiness of input data. In this paper, recent advances in the mathematical modeling of fundamental phenomena in welds are summarized. State of the art mathematical models, advances in computational techniques, emerging high performance computers, and experimental validation techniques have provided significant insight into the fundamental factors that control the development of the weldment. Current status and scientific issues in heat and fluid flow in welds, heat source metal interaction, and solidification microstructure are assessed. Future research areas of major importance for understanding the fundamental phenomena in weld behavior are identified.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 1995},
month = {Thu Jun 01 00:00:00 EDT 1995}
}

Conference:
Other availability
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