ASTM E1774 - 17 - Standard Guide for Electromagnetic Acoustic Transducers (EMATs)

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ASTM E1774 - 17

Standard Guide for Electromagnetic Acoustic Transducers (EMATs)

Status : Current   Published : June 2017

Format
PDF

Format
HARDCOPY



1.1 This guide is intended primarily for tutorial purposes. It provides an overview of the general principles governing the operation and use of electromagnetic acoustic transducers (EMATs) for ultrasonic examination.

1.2 This guide describes a non-contact technique for coupling ultrasonic energy into an electrically conductive or ferromagnetic material, or both, through the use of electromagnetic fields. This guide describes the theory of operation and basic design considerations as well as the advantages and limitations of the technique.

1.3 This guide is intended to serve as a general reference to assist in determining the usefulness of EMATs for a given application as well as provide fundamental information regarding their design and operation. This guide provides guidance for the generation of longitudinal, shear, Rayleigh, and Lamb wave modes using EMATs.

1.4 This guide does not contain detailed procedures for the use of EMATs in any specific applications; nor does it promote the use of EMATs without thorough testing prior to their use for examination purposes. Some applications in which EMATs have been applied successfully are outlined in Section 9.

1.5  Units—The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are for information only.

1.6  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.

1.7  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.




Standard NumberASTM E1774 - 17
TitleStandard Guide for Electromagnetic Acoustic Transducers (EMATs)
StatusCurrent
Publication Date01 June 2017
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Angle beam Conductor Electromagnetic acoustic transducer (EMAT) Flaw detection Lamb waves Longitudinal waves Lorentz forces Magnet Magnetostriction Rayleigh waves Shear waves Straight beam Thickness gaging Ultrasonics Wave mode Weld examination
ICS77.040.20
PublisherASTM
FormatA4
DeliveryYes
Pages9
File Size321 KB
Price£40.00


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