ASTM E 1106 - 86. Standard Guide for Evaluating Characteristics of Ultrasonic Search Units

American Society for Testing and Materials (ASTM). Reapproved 1997, 12 pages.
This method covers the requirements for the absolute calibration of acoustic emission (AE) sensors. The calibration yields the frequency response of a transducer to waves, at a surface, of the type normally encountered in acoustic emission work. The transducer voltage response is determined at discrete frequency intervals of approximately 10 kHz up to 1 MHz. The input is a given well-established dynamic displacement normal to the mounting surface. The units of the
calibration are output voltage per unit mechanical input (displacement, velocity, or acceleration).