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