STUDY OF WELDING PRODUCTIVITY ENTROPY ON WELDING SEQUENCE ON DISTORTION AND RESIDUAL STRESS IN SHIP

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Khosravi Babadi Mohsen; Zandi Sina; Rezvanpour Amin

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Seminar Paper

Paper Information

Seminar: INTERNATIONAL CONFERENCE ON NEW ACHIEVEMENTS IN SCIENCE AND TECHNOLOGY
Year:2017 | Issue:1

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Title

STUDY OF WELDING PRODUCTIVITY ENTROPY ON WELDING SEQUENCE ON DISTORTION AND RESIDUAL STRESS IN SHIP

Author(s)

Khosravi Babadi Mohsen | Zandi Sina | Rezvanpour Amin

Keywords

WELDING SEQUENCE

HEAT FIELD

DEFORMATION

RESIDUAL STRESS

WELDING PRODUCTIVITY ENTROPY

Abstract

IN EACH WELDING PROCESS, THE HEAT INPUT LEADS TO CHANGES IN THE WELD METAL WHICH LEADS TO THE FORMATION OF RESIDUAL STRESS AND UNWANTED DISTORTIONS. THESE RESIDUAL STRESS AND DISTORTIONS ARE CAUSING MAJOR PROBLEMS IN SHIPBUILDING INDUSTRY. CURRENTLY, THE MOST COMMONLY USED TECHNIQUE IN THE INDUSTRY TO PREVENT THESE DISTORTIONS IS THE USE OF FASTENERS DURING WELDING OPERATIONS. BUT THE USE OF FASTENERS CREATES STRESS. THIS PROBLEM IS INTENSIFIED SEVERELY IN THE SHIPBUILDING INDUSTRY DUE TO THE LOW THICKNESS OF THE SHEETS (THICKNESS BELOW 10 MM). OTHER HEAT TREATMENT METHODS BEFORE AND AFTER WELDING, SUCH AS LOCAL HEATING OR HAMMERING AND ETC. ARE VERY COSTLY AND TIME-CONSUMING. ONE OF THE CONTROLLED AND LOW COST WAYS IN COMPARISON WITH OTHER METHODS IS TO USE A SUITABLE WELDING ARRANGEMENT. THE PURPOSE OF THIS STUDY IS TO INVESTIGATE THE EFFECT OF THE WELDING ARRANGEMENT ON REDUCING DISTORTIONS IN THE STRUCTURES USED IN THE SHIPBUILDING INDUSTRY BY APPLYING PRODUCTION ENTROPY IN ORDER TO PREDICT THE TYPE AND SIZE OF WELDING DISTORTIONS, AS A RESULT, BY MODIFYING THE WELDING PARAMETERS AND WELDING ARRANGEMENT, THE WELD PATHS WERE DEFINED IN SUCH A WAY AS TO RESULT IN MINIMAL DISTORTIONS AND RESIDUAL STRESSES.

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APA: Copy

Khosravi Babadi, Mohsen, Zandi, Sina, & Rezvanpour, Amin. (2017). STUDY OF WELDING PRODUCTIVITY ENTROPY ON WELDING SEQUENCE ON DISTORTION AND RESIDUAL STRESS IN SHIP. INTERNATIONAL CONFERENCE ON NEW ACHIEVEMENTS IN SCIENCE AND TECHNOLOGY. SID. https://sid.ir/paper/948117/en

Vancouver: Copy

Khosravi Babadi Mohsen, Zandi Sina, Rezvanpour Amin. STUDY OF WELDING PRODUCTIVITY ENTROPY ON WELDING SEQUENCE ON DISTORTION AND RESIDUAL STRESS IN SHIP. 2017. Available from: https://sid.ir/paper/948117/en

IEEE: Copy

Mohsen Khosravi Babadi, Sina Zandi, and Amin Rezvanpour, “STUDY OF WELDING PRODUCTIVITY ENTROPY ON WELDING SEQUENCE ON DISTORTION AND RESIDUAL STRESS IN SHIP,” presented at the INTERNATIONAL CONFERENCE ON NEW ACHIEVEMENTS IN SCIENCE AND TECHNOLOGY. 2017, [Online]. Available: https://sid.ir/paper/948117/en

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