Experimental Investigation of Mechanical Property in Friction Stir Welding on (Cu2-2.041 And Ss-304l) Dissimilar Metal Using Taguchi Based GRA
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Date
2025-03
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Addis Ababa Ethiopia
Abstract
First and foremost, I want to express my gratitude to The Almighty GOD for allowing me to begin and complete my
thesis work to overcome different challenge and problems.
I am grateful to my thesis advisor, Dr. Mesfin Gizaw, Assistant Professor, School of Mechanical and Industrial
Engineering, for his genuine guidance and check-ups in the thesis writing process. by seating a good example of
researcher and solution maker to any problem by technical way. Those countless brainstorm enlightens me to think
critically and deeply, today and tomorrow. Your methodology and advises are still guiding me find the right path. I
thank you very much that you gave me perfect advices whenever I faced serious problems, you made me feel hopeful
to finish this thesis. Also,
I'm also thankful to Dr. Desalng wegeso and Dr. Getasew taddese , for their assistance and cooperation During thesis
progress submission as well as material selection to have a better result . I appreciate the support of Addis Ababa
University's School of Mechanical and Industrial Engineering members.
I would like to thank you to Dr. Areaya for writing support letters for both Ethiopia's customs and revenue authorities
and Ethio-china vocational institute to get tungsten carbide FSW tool road which imported from USA. I would like to
express my sincere thanks to my friend who work in Ethio-china vocational training centre Mr. GEZHNG for
facilitating the experimental workplace and machines and giving important feedback on my work and other one Mr.
SAMUEL who works at Ethiopian Manufacturing Enterprise METEC for their help during the experimental work and
heat treatment, respectively, on my research studies.
And also I’m thankful to Addis Ababa Science and Technology University’s work Shop Technician Mr. ISRAEL
who helped me in the FSW tool preparation from tungsten carbide with energy and for preparation of copper and
stillness stile plate for FSW purpose.
In addition to that I would like to give a great credential for those who do similar research titles and helps me in
different circumstance during the experimental work like Mr. Wondu Tesfaye previous Msc. Student of AAIT and Mr.
Eyob previous Bahirdar university student.
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Keywords
FSW, Orthogonal array, SS -Cu, tool material, mechanical property, butt joint