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ASTM International - ASTM E2700-20

Standard Practice for Contact Ultrasonic Testing of Welds Using Phased Arrays

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Organization: ASTM International
Publication Date: 1 June 2020
Status: active
Page Count: 10
ICS Code (Welded joints and welds): 25.160.40
significance And Use:

5.1 Phased array ultrasonic testing (PAUT) is an advanced examination technique used for enhanced flaw detection, sizing, and imaging as compared to conventional UT employing single-element... View More

scope:

1.1 This practice describes ultrasonic techniques for examining welds using phased array ultrasonic methods (see Note 1 and Note 2).

1.2 This practice uses angle beams, either in S-scan or E-scan modes, primarily for butt welds and Tee welds. Alternative welding techniques, such as solid state bonding (for example, friction stir welding) and fusion welding (for example, electron beam welding) can be examined using this practice, provided adequate coverage and techniques are documented and approved. Practices for specific geometries such as spot welds are not included. The practice is intended to be used on thicknesses of 9 to 200 mm. Greater and lesser thicknesses may be examined using this practice if the technique can be demonstrated to provide adequate detection on mockups of the same wall thickness and geometry.

1.2.1 Extreme caution should be used when attempting to size indications using phased array. It is likely that without proper procedures, indications can be oversized due to beam divergence, multiple virtual probes returning signals from the same indication, etc. For more guidance, see 12.4.

1.3 Units-The values stated in SI units are to be regarded as standard.

Note 1: This practice is based on experience with ferrous and aluminum alloys. Other metallic materials can be examined using this practice, provided reference standards can be developed to demonstrate that the particular material and weld can be successfully penetrated by an ultrasonic beam.

Note 2: For additional pertinent information, see ASME BPVC Section V, Article 4, Guide E2491, Practice E317, and Practice E587.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM E2700-20
June 1, 2020
Standard Practice for Contact Ultrasonic Testing of Welds Using Phased Arrays
5.1 Phased array ultrasonic testing (PAUT) is an advanced examination technique used for enhanced flaw detection, sizing, and imaging as compared to conventional UT employing single-element...
October 1, 2014
Standard Practice for Contact Ultrasonic Testing of Welds Using Phased Arrays
1.1 This practice describes ultrasonic techniques for inspecting welds using phased array ultrasonic methods (see Note 1). 1.2 This practice uses angle beams, either in S-scan or E-scan modes,...
August 1, 2009
Standard Practice for Contact Ultrasonic Testing of Welds Using Phased Arrays
Industrial phased arrays differ from conventional monocrystal ultrasonic transducers since they permit the electronic control of ultrasound beams. The arrays consist of a series of individual...
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