ASTM E1158-04
(Guide)Standard Guide for Material Selection and Fabrication of Reference Blocks for the Pulsed Longitudinal Wave Ultrasonic Examination of Metal and Metal Alloy Production Material
Standard Guide for Material Selection and Fabrication of Reference Blocks for the Pulsed Longitudinal Wave Ultrasonic Examination of Metal and Metal Alloy Production Material
SIGNIFICANCE AND USE
This guide is intended to illustrate the fabrication of ultrasonic reference blocks that are representative of the production material to be examined. Care in material selection and fabrication can result in the manufacture of reference blocks that are ultrasonically similar to the production material thus eliminating the reference block as an examination variable.
SCOPE
1.1 This guide covers general procedures for the material selection and fabrication of reference blocks made of metal or metal alloys and intended to be used for the examination of the same or similar production materials by pulsed longitudinal ultrasonic waves applied perpendicular to the beam entry surface. Primary emphasis is on solid materials but some of the techniques described may be used for midwall examination of pipes and tubes of heavy wall thickness. Near-surface resolution in any material depends upon the characteristics of the instrument and search unit employed.
1.2 This guide covers the fabrication of reference blocks for use with either the immersion or the direct-contact method of ultrasonic examination.
1.3 Reference blocks fabricated in accordance with this guide can be used to determine proper ultrasonic examination system operation. Area-amplitude and distance-amplitude curves can also be determined with these reference blocks.
1.4 This guide does not specify reference reflector sizes or product rejection limits. It does describe typical industry fabrication practices and commonly applied tolerances where they lend clarity to the guide. In all cases of conflict between this guide and customer specifications, the customer specification shall prevail.
1.5 This standard does not purport to address 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 to determine the applicability of regulatory limitations prior to use.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: E 1158 – 04
Standard Guide for
Material Selection and Fabrication of Reference Blocks for
the Pulsed Longitudinal Wave Ultrasonic Examination of
1
Metal and Metal Alloy Production Material
This standard is issued under the fixed designation E 1158; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 127 Practice for Fabricating and Checking Aluminum
3
Alloy Ultrasonic Standard Reference Blocks
1.1 This guide covers general procedures for the material
E 428 Practice for Fabrication and Control of Steel Refer-
selection and fabrication of reference blocks made of metal or
ence Blocks Used in Ultrasonic Examination
metal alloys and intended to be used for the examination of the
E 1316 Terminology for Nondestructive Examinations
same or similar production materials by pulsed longitudinal
ultrasonic waves applied perpendicular to the beam entry
3. Terminology
surface. Primary emphasis is on solid materials but some of the
3.1 Definitions—For definitions of terms used in this guide,
techniques described may be used for midwall examination of
see Terminology E 1316.
pipes and tubes of heavy wall thickness. Near-surface resolu-
tion in any material depends upon the characteristics of the
4. Summary of Guide
instrument and search unit employed.
4.1 This guide describes a method of selecting suitable
1.2 This guide covers the fabrication of reference blocks for
reference block material from current or previous production
use with either the immersion or the direct-contact method of
and the subsequent fabrication and checking of the resulting
ultrasonic examination.
ultrasonic reference blocks.
1.3 Reference blocks fabricated in accordance with this
guide can be used to determine proper ultrasonic examination
5. Significance and Use
system operation. Area-amplitude and distance-amplitude
5.1 This guide is intended to illustrate the fabrication of
curves can also be determined with these reference blocks.
ultrasonic reference blocks that are representative of the
1.4 This guide does not specify reference reflector sizes or
production material to be examined. Care in material selection
product rejection limits. It does describe typical industry
and fabrication can result in the manufacture of reference
fabrication practices and commonly applied tolerances where
blocks that are ultrasonically similar to the production material
they lend clarity to the guide. In all cases of conflict between
thus eliminating the reference block as an examination vari-
this guide and customer specifications, the customer specifica-
able.
tion shall prevail.
1.5 This standard does not purport to address the safety
6. Material Selection
concerns, if any, associated with its use. It is the responsibility
6.1 It is good practice to use a sample removed from the
of the user of this standard to establish appropriate safety and
production lot of material as the reference block material.
health practices and to determine the applicability of regula-
When this is not possible the following guidelines should be
tory limitations prior to use.
followed.
6.2 The reference block material should be of the same
2. Referenced Documents
general shape and dimensions, surface finish, chemical com-
2
2.1 ASTM Standards:
position, and microstructure as the production material to be
examined.
6.3 To ensure that the material chosen is suitable for use as
1
This guide is under the jurisdiction of ASTM Committee E07 on Nondestruc-
reference block material and is free of potentially interfering
tive Testing and is the direct responsibility of Subcommittee E07.06 on Ultrasonic
Method.
3
Current edition approved February 1, 2004. Published March 2004. Originally The reference blocks in Practice E 127 are used to check the performance of
approved in 1990. Last previous edition approved in 1998 as E 1158 - 98. ultrasonic examination equipment and for standardization and control of ultrasonic
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or examinations of aluminum alloy products. The ultrasonic response of the blocks in
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Practice E 127 is evaluated against a standard target. The blocks described in this
Standards volume information, refer to the standard’s Document Summary page on standard are used for the examination of production material and may be used to
the ASTM website. establish accept-reject criteria.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
----------------------
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.