The Present book is primarily deals on reliability problems which is
useful for the mathematics students as well as for the industry. In this
book industrial problems regarding failure of machines and the
maintenance polices are discussed. Different particular cases are given
besides some basic concepts. Many books and journals have been consulted
for the preparation of this text. We wish to thank the learned authors
from whom valuable directions had been taken. We also express our
sincere thank and appreciation to the Lambert Academic Publisher for
publishing of this book.