The Symposium on Fractography in Failure Analysis of Ceramics and Metals, sponsored by ASTM Committee E24 on Fracture Testing, was held at ASTM Headquarters, Philadelphia, Pennsylvania, on 29-30 April 1982. J. J. Mecholsky, Jr., Sandia National Laboratories, and S. R. Powell, Jr., Bell Helicopter Company, served as symposium chairmen. This volume, Fractography of Ceramic and Metal Failures, has been edited by Messrs. Mecholsky and Powell.