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ASTM C1332-01(2007)

(Test Method)

Standard Test Method for Measurement of Ultrasonic Attenuation Coefficients of Advanced Ceramics by Pulse-Echo Contact Technique

Standard Test Method for Measurement of Ultrasonic Attenuation Coefficients of Advanced Ceramics by Pulse-Echo Contact Technique

SCOPE
1.1 This test method describes a procedure for measurement of ultrasonic attenuation coefficients for advanced structural ceramic materials. The procedure is based on a broadband buffered piezoelectric probe used in the pulse-echo contact mode and emitting either longitudinal or shear waves. The primary objective of this test method is materials characterization.
1.2 The procedure requires coupling an ultrasonic probe to the surface of a plate-like sample and the recovery of successive front surface and back surface echoes. Power spectra of the echoes are used to calculate the attenuation spectrum (attenuation coefficient as a function of ultrasonic frequency) for the sample material. The transducer bandwidth and spectral response are selected to cover a range of frequencies and corresponding wavelengths that interact with microstructural features of interest in solid test samples.
1.3 The purpose of this test method is to establish fundamental procedures for measurement of ultrasonic attenuation coefficients. These measurements should distinguish and quantify microstructural differences among solid samples and therefore help establish a reference database for comparing materials and calibrating ultrasonic attenuation measurement equipment.
1.4 This test method applies to monolithic ceramics and also polycrystalline metals. This test method may be applied to whisker reinforced ceramics, particulate toughened ceramics, and ceramic composites provided that similar constraints on sample size, shape, and finish are met as described herein for monolithic ceramics.
1.5 This test method sets forth the constraints on sample size, shape, and finish that will assure valid attenuation coefficient measurements. This test method also describes the instrumentation, methods, and data processing procedures for accomplishing the measurements.
1.6 This test method is not recommended for highly attenuating materials such as very thick, very porous, rough-surfaced monolithics or composites. This test method is not recommended for highly nonuniform, heterogeneous, cracked, defective, or otherwise flaw-ridden samples that are unrepresentative of the nature or inherent characteristics of the material under examination.
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.

General Information

Status
Historical
Publication Date
31-Jul-2007
ICS
19.100 - Non-destructive testing
81.060.99 - Other standards related to ceramics
Technical Committee
C28 - Advanced Ceramics
Drafting Committee
C28.03 - Physical Properties and Non-Destructive Evaluation
Current Stage
Ref Project

Relations

Replaces
ASTM C1332-01 - Standard Test Method for Measurement of Ultrasonic Attenuation Coefficients of Advanced Ceramics by Pulse-Echo Contact Technique
Effective Date
01-Aug-2007
Replaced By
ASTM C1332-01(2013) - Standard Test Method for Measurement of Ultrasonic Attenuation Coefficients of Advanced Ceramics by Pulse-Echo Contact Technique
Effective Date
01-Feb-2013

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ASTM C1332-01(2007) - Standard Test Method for Measurement of Ultrasonic Attenuation Coefficients of Advanced Ceramics by Pulse-Echo Contact TechniqueASTM C1332-01(2007) - Standard Test Method for Measurement of Ultrasonic Attenuation Coefficients of Advanced Ceramics by Pulse-Echo Contact Technique
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ASTM C1332-01(2007) - Standard Test Method for Measurement of Ultrasonic Attenuation Coefficients of Advanced Ceramics by Pulse-Echo Contact Technique
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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: C1332 − 01(Reapproved 2007)
Standard Test Method for
Measurement of Ultrasonic Attenuation Coefficients of
1
Advanced Ceramics by Pulse-Echo Contact Technique
This standard is issued under the fixed designation C1332; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.6 This test method is not recommended for highly attenu-
atingmaterialssuchasverythick,veryporous,rough-surfaced
1.1 Thistestmethoddescribesaprocedureformeasurement
monolithics or composites. This test method is not recom-
of ultrasonic attenuation coefficients for advanced structural
mended for highly nonuniform, heterogeneous, cracked,
ceramic materials. The procedure is based on a broadband
defective, or otherwise flaw-ridden samples that are unrepre-
buffered piezoelectric probe used in the pulse-echo contact
sentative of the nature or inherent characteristics of the
mode and emitting either longitudinal or shear waves. The
material under examination.
primary objective of this test method is materials characteriza-
1.7 This standard does not purport to address all of the
tion.
safety concerns, if any, associated with its use. It is the
1.2 The procedure requires coupling an ultrasonic probe to
responsibility of the user of this standard to establish appro-
the surface of a plate-like sample and the recovery of succes-
priate safety and health practices and determine the applica-
sive front surface and back surface echoes. Power spectra of
bility of regulatory limitations prior to use.
the echoes are used to calculate the attenuation spectrum
(attenuation coefficient as a function of ultrasonic frequency)
2. Referenced Documents
forthesamplematerial.Thetransducerbandwidthandspectral
2
2.1 ASTM Standards:
response are selected to cover a range of frequencies and
C1331Test Method for Measuring Ultrasonic Velocity in
corresponding wavelengths that interact with microstructural
Advanced Ceramics with Broadband Pulse-Echo Cross-
features of interest in solid test samples.
Correlation Method
1.3 The purpose of this test method is to establish funda-
E664Practice for the Measurement of theApparentAttenu-
mental procedures for measurement of ultrasonic attenuation
ation of Longitudinal Ultrasonic Waves by Immersion
coefficients.Thesemeasurementsshoulddistinguishandquan-
Method
tify microstructural differences among solid samples and
E1316Terminology for Nondestructive Examinations
therefore help establish a reference database for comparing
E1495 Guide for Acousto-Ultrasonic Assessment of
materials and calibrating ultrasonic attenuation measurement
Composites, Laminates, and Bonded Joints
equipment.
2.2 ASNT Document:
1.4 Thistestmethodappliestomonolithicceramicsandalso
Recommended Practice SNT-TC-1A for Nondestructive
3
polycrystalline metals. This test method may be applied to
Testing Personnel Qualification and Certification
whisker reinforced ceramics, particulate toughened ceramics,
2.3 Military Standard:
and ceramic composites provided that similar constraints on
MIL-STD-410 Nondestructive Testing Personnel Qualifica-
sample size, shape, and finish are met as described herein for 4
tion and Certification
monolithic ceramics.
2.4 Additional references are cited in the text and at end of
1.5 This test method sets forth the constraints on sample
this test method.
size, shape, and finish that will assure valid attenuation
coefficient measurements. This test method also describes the
instrumentation, methods, and data processing procedures for
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
accomplishing the measurements.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
1
This test method is under the jurisdiction of ASTM Committee C28 on the ASTM website.
3
Advanced Ceramics and is the direct responsibility of Subcommittee C28.03 on AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
Physical Properties and Non-Destructive Evaluation. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
4
Current edition approved Aug. 1, 2007. Published August 2007. Originally Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
approved in 1996. Last previous edition approved in 2001 as C1332–01. DOI: Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
10.1520/C1332-01R07. www.dodssp.daps.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 -------
...

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