ASTM-E127 Standard Practice for Fabrication and Control of Aluminum Alloy Ultrasonic Standard Reference Blocks

ASTM-E127 - 2015 EDITION - CURRENT
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Scope

1.1 This practice covers a procedure for fabricating aluminum alloy ultrasonic standard reference blocks that can be used for assessing 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. (1-18).2

Note 1: Practice E428 and Guide E1158 also describe procedures for selecting material, fabricating blocks, and checking response.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Significance and Use

5.1 Reference blocks fabricated to this practice will exhibit specific area-amplitude and distance-amplitude relationships only with an immersion test at 5 MHz using the search unit, test instrument, and test parameters described in this practice. Comparison tests at other frequencies or with uncalibrated test systems will not necessarily give the same relationships shown in this practice.

5.2 Although the primary ultrasonic evaluation of blocks is performed at a specified frequency, the blocks may be used to standardize ultrasonic tests at any frequency and with any pulse-echo ultrasonic test system. Establishment of distance-amplitude and area-amplitude characteristics is necessary for each application. This use may be inappropriate for other materials and curved surfaces without special compensation. Also see (3) for cautions regarding use of standard blocks for test standardization.

Keywords

aluminum reference blocks; area-amplitude calibration blocks; distance-amplitude calibration blocks; nondestructive testing; standard reference blocks; ultrasonic reference blocks ;; ICS Number Code 77.040.01 (Testing of metals in general); 77.120.10 (Aluminium and aluminium alloys)

To find similar documents by ASTM Volume:

03.03 (Nondestructive Testing)

To find similar documents by classification:

77.040.01 (Testing of metals in general)

77.120.10 (Aluminium and aluminium alloys)

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Document Number

ASTM-E127-15

Revision Level

2015 EDITION

Status

Current

Modification Type

Revision with Title Change

Publication Date

June 15, 2015

Document Type

Practice

Page Count

9 pages

Committee Number

E07.06