This book received a wide range of support and assistance during its development stage. First, I would like to thank Ms Ella Mitchell, assistant editor in Electrical Engineering at Wiley. Without her early outreach and encouragement, I would not have been able to lay out the preliminary proposal and start this writing journey.

I also want to thank the early assistance from Ms Shivana Raj, Ms Deepika Miriam, and Ms Sharon Jeba Paul, who served as the editorial contacts during the formation of the first four chapters of the book. My great appreciation is given to Mr Louis Vasanth Manoharan who provided the assistance, communications, and editorial guidelines when the remaining eight chapters were finally completed.

I am also indebted to Ms Michelle Dunckley and the design team for their creation of the nice book cover. Special appreciation is given to Ms Patricia Bateson for her professional and quality editing of the entire manuscript. My thanks are also to production editor Mr. Sathishwaran Pathbanabhan for the final quality check of the editing.

Meanwhile, I would like to thank Dr Shubin Si and Dr Hongyan Dui for the discussion and formation of integrated importance measures in Chapter 2. My appreciation is extended to Dr Zhiqiang Cai who invited me to offer reliability engineering workshops at Northwestern Polytechnical University, Xian, where the materials were used by both Masters and PhD students. Very sincerely, I want to thank the Ingram School of Engineering at Texas State University where I have been teaching reliability engineering and supply chain courses since 2010. The feedback gathered from senior engineering students allowed me to improve and enhance the book content.

I am also very grateful to all the anonymous reviewers who provided constructive suggestions during the early development stage of the book, allowing me to improve and enrich the contents of the book.

My deep appreciations are given to Professor David W. Coit, Professor Elsayed Elsayed, and Professor Hoang Pham at Rutgers University. They taught, supervised, and guided my entry into the reliability engineering world when I was pursuing my graduate study. Since then I have been enjoying this dynamic and fast growing field both in my previous industry appointment and current academic position.

Last, but not least, my thanks are extended to my family members for their support, patience, and understanding during this lengthy endeavor. Special appreciations are reserved for my wife, Youping, who spent tremendous time and effort in taking care of our kid, allowing me to focus on the writing of the book. Without her persevering support this book would not have been available at this moment.