Published: Jan 1977
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Five years ago, acoustic emission monitoring was recognized barely as an emerging nondestructive testing (NDT) method; yet significant progress has been made with respect to the establishment of standards. The NDT experts in acoustic emission technology presently are developing standard terminology, standard measurement procedures, standard calibration techniques, and standard personnel qualifications. The major collective efforts are being coordinated by the American Society for Testing and Materials (ASTM), American Society of Mechanical Engineers (ASME), American Society for Nondestructive Testing (ASNT), and the National Bureau of Standards (NBS). In this paper we review the current status of the developing standards, and we discuss some idealized standards that have not been formulated popularly or even seriously proposed. We also show how some of the limitations and deficiencies of the present state of the art can be removed by the evolving or proposed standards.
acoustics, emission, nondestructive tests, standards, performance, calibration, frequencies, pressure vessels, hydrostatic tests
Consulting technical director, Trodyne Corporation, Teterboro, N.J.