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Terminology 3. Current edition approved Feb. Published April It must be subtracted from the indicated elongation to yield true specimen elongation in the gage length Note 1. System compliance correction will not apply when elongation in the specimen gage length is determined by direct measurement.
Extreme care must be exercised in the determination of this correction as outlined in 8. Summary of Test Method 4. The tabs are gripped so that the test specimen is aligned axially in the jaws of a constant-speed movable-crosshead test machine.
Alternative methods of area de- termination such as optical gages, image-splitting microscope, linear weight-density method, etc, may also be used. No further reproductions authorized. Apparatus 6. The apparatus described herein shall use a constant-strain-rate tensile testing machine with a test specimen bonded to a suitable tab.
Selection should be random. It shall contain an adaptor, on the machine centerline, for the other part of the specimen grip assembly. For this test method, chart and crosshead speeds shall be provided to produce acceptable data. Alternative methods of specimen mounting may be used. Test Specimens 7. Procedure 8. Determine the length to the nearest 6 0. N OTE 2—For this test method, the specimen gage length shall be between 20 and 30 mm. The tab shape should be proportioned as shown in Fig.
Center the specimen over the tab slot with one end taped to the tab.
Terminology 3. Current edition approved Feb. Published April It must be subtracted from the indicated elongation to yield true specimen elongation in the gage length Note 1.
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