Standard Practice for Ultrasonic Pulse-Echo Straight-Beam Contact TestingTranslate name
STANDARD published on 1.12.2020
Designation standards: ASTM E114-20
Publication date standards: 1.12.2020
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
contact, examination, nondestructive testing, pulse-echo, straight-beam, ultrasonic ,, ICS Number Code 19.100 (Non-destructive testing)
|Significance and Use|
5.1ï¿½This practice employs the use of normal-incident, or straight beam, longitudinal wave ultrasound for the detection and evaluation of discontinuities in materials requiring volumetric examination.
5.2ï¿½Although not all requirements of this practice can be applied universally to all inspection situations and materials, it does provide the basis for establishing contractual criteria between suppliers and purchasers of materials for performing contact longitudinal wave pulse-echo examination and may be used as a guide for writing detailed procedures for particular applications.
5.3ï¿½Types of information that may be obtained from the pulsed-echo straight-beam practice are as follows:
5.3.1ï¿½Apparent discontinuity size (see ) by comparison of the signal amplitudes from the test piece to the amplitudes obtained from a reference standard.
5.3.2ï¿½Depth location of discontinuities by calibrating the horizontal scale of the A-scan display.
5.3.3ï¿½Material properties as indicated by the relative sound attenuation or velocity changes of compared items.
5.3.4ï¿½The extent of bond and unbond (or fusion and lack of fusion) between two ultrasonic conducting materials if geometry and materials permit.
Note 1:ï¿½The term â€œapparentâ€ is emphasized since true size depends on orientation, composition, and geometry of the discontinuity and equipment limitations.
1.1ï¿½This practice1.2ï¿½This practice shall be applicable to development of an examination procedure agreed upon by the users of the document.
1.3ï¿½Unitsâ€”The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4ï¿½This 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.
1.5ï¿½This 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.
|2. Referenced Documents|
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