TY  - JOUR
T1  - Resistance Spot Welding Properties Improvement through Post
Weld Impact Treatment
AU - Ghazali, Farizah Adliza AU - Salleh, Zuraidah AU - Zulkifli, Aminuddin AU - Padzi, Mahfodzah Md. AU - Zain, Norazwani Muhammad 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 10
SP  - 3194
EP  - 3199
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.3194.3199
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.3194.3199
KW  - Resistance spot welding
KW  -post weld impact treatment
KW  -fatigue life
KW  -strength
KW  -samples
KW  -steel
AB  - This study investigates the effects of post weld impact treatment of spot welding on the mechanical
properties and fatigue characteristics of the spot welded joint. The impact treatment process generates the
compressive residual stresses in resistance spot-welded low carbon steel using two different impact treatment
process using a specially designed Low Blow Impact Treatment (LBIT) apparatus and Pneumatic Impact
Treatment (PIT) equipment. LBIT impact energy of 6 Joule and PIT using air pressure of 4 bar were applied to
the welded joint. The effect of the impact treatment on mechanical properties of the spot-welded joint was
investigated. Assessments of the mechanical properties and qualitative results between as-welded samples and
the post weld impact treatment samples have been examined. Fatigue test was also conducted to evaluate the
fatigue characteristics of spot-weld joint. The tensile-shear load of RSW PIT exhibits the highest value (8.81
kN) as compared to the RSW LBIT (8.42 kN) and RSW as-weld (8.20 kN). The fatigue life of RSW PIT was more
than 4 times longer than those of as-weld samples throughout the whole load range. While, the fatigue life of
RSW LBIT was 3 times longer than as-weld samples. Results showed that an improvement in the mechanical
properties and fatigue strength has achieved through the post weld impact treatment.
ER  -