ASTM E 127. Standard Practice for Fabricating and Checking Aluminum Alloy Ultrasonic Standard Reference Blocks

American Society for Testing and Materials (ASTM). 1998, 13 pages.
This practice covers a procedure for fabricating aluminum alloy ultrasonic standard reference blocks that can be used for checking performance of ultrasonic testing equipment and
for standardization and control of ultrasonic tests of aluminum alloy products using pulsed longitudinal waves introduced into test material either by the direct-contact method or by the
immersion method. A recommended procedure for checking blocks is described and calibration data for a number of reference blocks are tabulated. Statements concerning procedures
are provided without a discussion of the technical background for the preference. The necessary technical background can be found in Refs.