ASTM E83-23

ASTM E83-23

Standard Practice for Verification and Classification of Extensometer Systems

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Détails

1.1 This practice covers procedures for the verification and classification of extensometer systems, but it is not intended to be a complete purchase specification. The practice is applicable only to instruments that indicate or record values that are proportional to changes in length corresponding to either tensile or compressive strain. Extensometer systems are classified on the basis of the magnitude of their errors.

1.2 Because strain is a dimensionless quantity, this document can be used for extensometers based on either SI or US customary units of displacement.

Note 1: Bonded resistance strain gauges directly bonded to a specimen cannot be calibrated or verified with the apparatus described in this practice for the verification of extensometers having definite gauge points. (See procedures as described in Test Methods E251.)

1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 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.


Rationale:

This practice covers procedures for the verification and classification of extensometer systems, but it is not intended to be a complete purchase specification. The practice is applicable only to instruments that indicate or record values that are proportional to changes in length corresponding to either tensile or compressive strain. Extensometer systems are classified on the basis of the magnitude of their errors. The apparatus for verifying extensometer systems shall provide a means for applying controlled displacements to a simulated specimen and for measuring these displacements accurately. Extensometer systems shall be classified in accordance with the requirements as to maximum error of strain indicated: Class A, Class B-1, Class B-2, Class C, Class D, and Class E. Extensometer systems shall be categorized in three types according to gage length: Type 1, Type 2, and Type 3. A verification procedure for extensometer systems shall be done in accordance with the specified requirements.

Informations supplémentaires

Auteur American Society for Testing and Materials (ASTM International)
Comité E28.01 - Committee E28 on Mechanical Testing
Edité par ASTM
Type de document Norme
Thème ,Mechanical testing
ICS 19.060 : Essais mécaniques
Nombre de pages 16
Remplace ASTM E83-16
Recueil ASTM Volume 03.01 - Multi-User - Single-Site Online
Mot-clé E83

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