he idea for this book emerged after teaching the undergraduate course on mechanical behavior of materials at the University of California at Berkeley for more than 20 years, recognizing the lack of understanding of basic concepts in the absence of hands-on experience and difficulties ofthe students to use classroom material to explain experimental findings in a comprehensive manner. The book reflects the author’s strong commitment to promote excellence in undergraduate teaching at UC Berkeley and to elevate student understanding of materials behavior.This book would not have been possible without the tireless efforts of many of my research students, who took precious times from their research to assist me in developing the experiments presented in this book. I am greatly indebted to H. Zhang, H. Xiang, N. Wang, X. Yin, Q. Cheng, Z. Song, H. Xu, and A. Poulizac who not only played pivotal roles in setting up the experiments and obtaining the representative results included in this book, but also supervising the students during the laboratory sessions over the past year and grading their reports.I also wish to acknowledge the support and encouragement provided by my Department. I especially thank Professor A. P. Pisano, Chair of the Department of Mechanical Engineering, for his continued interest on this project and for raising the funds to renovate the space where these laboratories are hosted. I am also grateful to my colleagues Professors L. A. Pruitt and H. Dharan for donating an axial loading machine and an impact tester, respectively, for the experiments and their support throughout my efforts to create these laboratories. Lastly, my thanks go to Mr. S. McCormick for technical assistance, equipment service and upgrading, specimen fabrication, laboratory coordination, and, especially, for overseeing the work of my students during the development of the experiments
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