ASTM E1901-18

Standard Guide for Detection and Evaluation of Discontinuities by Contact Pulse-Echo Straight-Beam Ultrasonic Methods

SIGNIFICANCE AND USE
6.1 This guide provides procedures for the application of contact straight-beam examination for the detection and quantitative evaluation of discontinuities in materials.  
6.2 Although not all requirements of this guide can be applied universally to all examinations, situations, and materials, it does provide basis for establishing contractual criteria between the users, and may be used as a general guide for preparing detailed specifications for a particular application.  
6.3 This guide is directed towards the evaluation of discontinuities detectable with the beam normal to the entry surface. If discontinuities or other orientations are of concern, alternate scanning techniques are required.
SCOPE
1.1 This guide covers procedures for the contact ultrasonic examination of bulk materials or parts by transmitting pulsed ultrasonic waves into the material and observing the indications of reflected waves. This guide covers only examinations in which one search unit is used as both transmitter and receiver (pulse-echo). This guide includes general requirements and procedures that may be used for detecting discontinuities, locating depth and distance from a point of reference and for making a relative or approximate evaluation of the size of discontinuities as compared to a reference standard.  
1.2 This guide complements Practice E114 by providing more detailed procedures for the selection and standardization of the examination system and for evaluation of the indications obtained.  
1.3 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.  
1.4 This guide 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 guide to establish the 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.

General Information

• Status: Historical
• Publication Date: 30-Jun-2018
• ICS: 19.100 - Non-destructive testing
• Technical Committee: E07 - Nondestructive Testing
• Drafting Committee: E07.06 - Ultrasonic Method

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1901 − 18
Standard Guide for
Detection and Evaluation of Discontinuities by Contact
1
Pulse-Echo Straight-Beam Ultrasonic Methods
This standard is issued under the fixed designation E1901; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
1.1 This guide covers procedures for the contact ultrasonic 2.1 ASTM Standards:
examination of bulk materials or parts by transmitting pulsed E114 Practice for Ultrasonic Pulse-Echo Straight-Beam
ultrasonic waves into the material and observing the indica- Contact Testing
tions of reflected waves. This guide covers only examinations E127 Practice for Fabrication and Control of Aluminum
in which one search unit is used as both transmitter and Alloy Ultrasonic Standard Reference Blocks
receiver (pulse-echo). This guide includes general require- E317 Practice for Evaluating Performance Characteristics of
ments and procedures that may be used for detecting Ultrasonic Pulse-Echo Testing Instruments and Systems
discontinuities, locating depth and distance from a point of without the Use of Electronic Measurement Instruments
reference and for making a relative or approximate evaluation E428 Practice for Fabrication and Control of Metal, Other
of the size of discontinuities as compared to a reference than Aluminum, Reference Blocks Used in Ultrasonic
standard. Testing
E543 Specification for Agencies Performing Nondestructive
1.2 This guide complements Practice E114 by providing
Testing
more detailed procedures for the selection and standardization
E1158 Guide for Material Selection and Fabrication of
of the examination system and for evaluation of the indications
Reference Blocks for the Pulsed Longitudinal Wave Ul-
obtained.
trasonic Testing of Metal and Metal Alloy Production
1.3 The values stated in inch-pound units are to be regarded
Material
as standard. The values given in parentheses are mathematical
E1316 Terminology for Nondestructive Examinations
conversions to SI units that are provided for information only
2.2 ASNT Standard:
and are not considered standard.
SNT-TC-1A Recommended Practice for Personnel Qualifi-
1.4 This guide does not purport to address all of the safety
cation and Certification in Nondestructive Testing Person-
3
concerns, if any, associated with its use. It is the responsibility
nel
of the user of this guide to establish the appropriate safety,
2.3 ANSI/ASNT Standard:
health, and environmental practices and determine the appli-
ANSI/ASNT CP-189 ASNT Standard for Qualification and
3
cability of regulatory limitations prior to use.
Certification of Nondestructive Testing Personnel
1.5 This international standard was developed in accor-
2.4 Aerospace Industries Association Document:
dance with internationally recognized principles on standard-
NAS-410 NAS Certification and Qualification of Nonde-
4
ization established in the Decision on Principles for the
structive Test Personnel
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Barriers to Trade (TBT) Committee.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
1
This guide is under the jurisdiction of ASTM Committee E07 on Nondestruc- the ASTM website.
3
tive Testing and is the direct responsibility of Subcommittee E07.06 on Ultrasonic Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
Method. 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Current edition approved July 1, 2018. Published July 2018. Originally approved Available from Aerospace Industries Association of America, Inc. (AIA), 1000
in 1997. Last previous edition approved in 2013 as E1901 - 13. DOI: 10.1520/ Wilson Blvd., Suite 1700, Arlington, VA 22209-3928, http://www.aia-aerospace.org.
E1901-18.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E1901 − 18
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2.5 ISO Standard 4.3 Personnel Qualifications—If specified in the contractual
ISO 9712 Non-destructive testing — Qualification and cer- agreement, personnel performing examinations to this standard
tification of NDT personnel shall be qualified in accordance with a nationally or interna-
tionally recognized NDT personnel qualification practice or
3. Terminology stan
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1901 − 13 E1901 − 18
Standard Guide for
Detection and Evaluation of Discontinuities by Contact
1
Pulse-Echo Straight-Beam Ultrasonic Methods
This standard is issued under the fixed designation E1901; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This guide covers procedures for the contact ultrasonic examination of bulk materials or parts by transmitting pulsed
ultrasonic waves into the material and observing the indications of reflected waves. This guide covers only examinations in which
one search unit is used as both transmitter and receiver (pulse-echo). This guide includes general requirements and procedures that
may be used for detecting discontinuities, locating depth and distance from a point of reference and for making a relative or
approximate evaluation of the size of discontinuities as compared to a reference standard.
1.2 This guide complements Practice E114 by providing more detailed procedures for the selection and calibrationstandard-
ization of the inspectionexamination system and for evaluation of the indications obtained.
1.3 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.
1.4 This guide 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 guide to establish the appropriate safety safety, health, and healthenvironmental 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.
2. Referenced Documents
2
2.1 ASTM Standards:
E114 Practice for Ultrasonic Pulse-Echo Straight-Beam Contact Testing
E127 Practice for Fabrication and Control of Aluminum Alloy Ultrasonic Standard Reference Blocks
E317 Practice for Evaluating Performance Characteristics of Ultrasonic Pulse-Echo Testing Instruments and Systems without the
Use of Electronic Measurement Instruments
E428 Practice for Fabrication and Control of Metal, Other than Aluminum, Reference Blocks Used in Ultrasonic Testing
E543 Specification for Agencies Performing Nondestructive Testing
E1158 Guide for Material Selection and Fabrication of Reference Blocks for the Pulsed Longitudinal Wave Ultrasonic Testing
of Metal and Metal Alloy Production Material
E1316 Terminology for Nondestructive Examinations
2.2 ASNT Standard:
3
SNT-TC-1A Recommended Practice for Personnel Qualification and Certification in Nondestructive Testing Personnel
2.3 ANSI/ASNT Standard:
3
ANSI/ASNT CP-189 ASNT Standard for Qualification and Certification of Nondestructive Testing Personnel
2.4 Aerospace Industries Association Document:
4
NAS-410 NAS Certification and Qualification of Nondestructive Test Personnel
1
This guide is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.06 on Ultrasonic Method.
Current edition approved Dec. 1, 2013July 1, 2018. Published February 2014July 2018. Originally approved in 1997. Last previous edition approved in 20082013 as
E1901 - 08.E1901 - 13. DOI: 10.1520/E1901-13.10.1520/E1901-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Available from Aerospace Industries Association of America, Inc. (AIA), 1000 Wilson Blvd., Suite 1700, Arlington, VA 22209-3928, http://www.aia-aerospace.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E1901 − 18
5
2.5 ISO Standard
I
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