ASTM. E is applicable for linear variable displacement transformers ASTM E also has multiple accuracy classifications similar to ASTM E83 for the. THE FOLLOWING DESCRIBED EQUIPMENT IN ACCORDANCE WITH. ASTM- E AND UTS SOPRev CERTIFICATE NUMBER: CR# GWASTM E Standard Practice for Verification and Classification of Extensometer Systems_自然科学_专业资料。GWASTM E
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Ideally, this test should result in zero output over the performance range of interest.
In addition, the gage length error for Type 1 extensometers shall not exceed the greater of the values shown in Table 1. This abstract is a brief summary of the referenced standard.
The maximum allowable error in each class is the?
This specimen is then placed in the environmental chamber, and the environmental and optical conditions to be used in the test can be reproduced. NOTE 6—When autographic extensometer systems are used, care should be taken to minimize errors introduced by variances in the graph paper.
Active view current version asrm standard Translated Standard: 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. If the machine system resolution is 0. See procedures as described in Test Methods E If start-up backlash is evident, the veri? These errors can be due to dimensional changes from reproduction or humidity changes.
It may be advantageous to evaluate the measurement uncertainty of the actual displacement standard used at the actual displacement for which the measurement uncertainty of the error of the extensometer is being determined. The record astk contain gage length and spot check test data; the name, serial number, veri? For direct-reading extensometers the calibration factor is unity. The changes in length shall be measured, for example, by means of an interferometer, calibrated standard gage blocks and an indicator, a calibrated micrometer screw, or a calibrated laser measurement system.
ASTM E83 – 16 – Standard Practice for Verification and Classification of Extensometer Systems
There are to be at least? If these are known and the temperature is known, then the low-temperature gage length can be calculated. If the reading does not return to zero, adjust and repeat the procedure until the reading does return to zero. E883, spot checks are not valid.
ASTM E83 – 10a Standard Practice for Verification and Classification of Extensometer Systems
If there are four or more gage points, take the average of the individual lengths as the gage length. It is the responsibility of the user of this standard to establish appropriate safety asgm health practices and determine the applicability of regulatory limitations prior to use.
NOTE 1—Bonded resistance strain gages directly bonded to a specimen cannot be calibrated or veri? If readout devices are always used in combination, individual veri? A possible method to verify this at high temperature is the use of a precision reference specimen with known gage length placement of marks or?
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. 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.
This standard is not included in any packages. Type 1; Type 2; wstm Type 3. The use of an optical magnifying device is recommended when reading and measuring autographic records.
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. Time Interval Between Veri?
ASTM E83 – 16
It may consist of a rigid frame, suitable coaxial spindles, or other? For example, if a chart recorder or XY plotter were being used, then the pen response might be the limiting factor; or if a digital readout device is used, they are often? As an alternative, after individual veri? See procedures as described in Test Methods E These applied strains are compared with the indicated strains from the Type 3 extensometer systems, in order asfm establish its classi?
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