The ultrasonic time of flight diffraction technique (TOFD) is a routine method for defect detraction and sizing performance in engineering structures. The first book by the authors, published in 1989, aimed to give the non- destructive testing engineer comprehensive information on the theoretical background, practical implementation and performance of the technique. Their method is now widely used and is a European Standard.

This second edition has brought the previous book up to date by including new material on the theoretical basis, experimental demonstration of capability and engineering applications of TOFD. The book also includes a chapter on standards, citing work on European standards.