The Second Conference on Composite Materials: Testing and Designwas held 20-22 April 1971 in Anaheim, Calif. Committee D30 on HighModulus Fibers and Their Composites of the American Society forTesting and Materials sponsored the conference, in conjunction withthe American Institute of Mining, Metallurgical and PetroleumEngineers. H. T. Corten of the College of Engineering, Universityof Illinois, served as conference and program chairman. Of the 53papers presented at the ten sessions, 36 are included in thevolume, which complements the first conference publication, ASTMSTP 460, Composite Materials: Testing and Design.