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ASTM-E1949:2021 Edition

ASTM-E1949:2021 Edition

$34.13

E1949-21 Standard Test Method for Ambient Temperature Fatigue Life of Metallic Bonded Resistance Strain Gages

Published By Publication Date Number of Pages
ASTM 2021 5
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ASTM E1949-21

Active Standard: Standard Test Method for Ambient Temperature Fatigue Life of Metallic Bonded Resistance Strain Gages

ASTM E1949

Scope

1.1 This test method covers a uniform procedure for the determination of strain gage fatigue life at ambient temperature. A suggested testing equipment design is included.

1.2 This test method does not apply to force transducers or extensometers that use metallic bonded resistance strain gages as sensing elements.

1.3 Strain gages are part of a complex system that includes structure, adhesive, strain gage, lead wires, instrumentation, and (often) environmental protection. As a result, many things affect the performance of strain gages, including user technique. A further complication is that strain gages, once installed, normally cannot be reinstalled in another location. Therefore, it is not possible to calibrate individual strain gages; performance characteristics are normally presented on a statistical basis.

1.4 This test method encompasses only fully reversed stain cycles.

1.5 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.

1.6 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.

Keywords

fully reversed strain; gage factor; gage resistance; strain gages; strain gage fatigue life; strain gage fatigue test apparatus; super sensitivity; zero shift;

ICS Code

ICS Number Code 19.060 (Mechanical testing)

DOI: 10.1520/E1949-21

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ASTM-E1949
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