RESIDUAL STRESSES IN ARC WELDED MILD STEEL BUTT JOINTS
RESIDUAL STRESSES IN ARC WELDED MILD STEEL BUTT JOINTS
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Date
1983-07
Authors
AGU, VIASHIMA
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Abstract
This thesis is a study of residual stresses in arc welded
butt joints and the effect of joint geometry and electrode type
on the stresses.
Three joint designs, the single- v, the double - v and
square - butt joints have been considered. Two filler rods
selected for this study are E6012 and E6013 of the American
Voiding Society (AWS) classification. Each electrode type was
used to weld the joint designs, by the electric arc process.
The stress relaxation sectioning technique using electrical
resistance strain gauges was used in taking the readings.
The single - v joint was found to produce stresses of higher
magnitude than the double - v and square - butt joints. The
double - v and square - butt joints produced stresses of about
the same magnitude. This study however showed that the two
electrode types selected for the welding produced almost the
same effect on the residual stresses.
Description
A Thesis Submitted to the Postgraduate School,
Ahmadu Bello University, Zaria, in Partial Fulfillment
of the Requirements for the Degree of Master of
Engineering (Production),
DEPARTMENT OF MECHANICAL ENGINEERING
FACULTY OF ENGINEERING
AHMADU BELLO UNIVERSITY
SAMARU-ZARIA
Keywords
RESIDUAL,, STRESSES,, WELDED,, MILD STEEL,, BUTT JOINTS,