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Acoustic emission is still a dynamic technology after some 25 years of continuing development. Standards are developed as new applications are proven, and the need for new standards is pressed by both suppliers and users of acoustic emission services. At the present time, ASTM has twelve acoustic emission standards in Volume 03.03 of the Annual Book of ASTM Standards and five in development; the American Society of Mechanical Engineers Section V has two acoustic emission standards; the Society for the Plastics Industry has one; and the American Society for Nondestructive Testing now offers testing for certification of acoustic emission practitioners.
Acoustic emission standards are typically written by representatives of the users, suppliers of services and instruments, and researchers. This mix assures that standards will satisfy the needs of the community and incorporate new technology. Some acoustic emission standards anticipated for the future are offshore testing, underwater surveillance, and aircraft structural-integrity assessment.
acoustic emission, AE standards, acousto/ultrasound
Institute scientist, Southwest Research Institute, San Antonio, TX