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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Unless it can be demonstrated that autographic extensometers and recorders of a given type may be used interchangeably without introducing errors that would affect the classi?
When greater temperature variations occur, the uncertainty due to this increased temperature variation shall be included in the determination of measurement uncertainty.
ASTM E83 – 16 Standard Practice for Verification and Classification of Extensometer Systems
They result from the following characteristics: Take the average of the lengths thus established on each side of the rod as the gage length. B The strain of an Extensometer System is the ratio of applied extension to the gage length. Your Alert Profile lists the documents that will be monitored. An extensometer that aatm directly to the specimen should be removed and then reattached to the veri?
A superscript epsilon e indicates an editorial change since the last revision or reapproval. If the machine system resolution is 0.
It may consist of a rigid frame, suitable coaxial spindles, or other? Direct measurement of the trace soon after it was made eliminates the graph paper errors and asstm desirable for systems veri? It may be due to a shift in the null point of the device, a change in span, or an error in the gage length.
Errors are based on net values from the zero point to each successive veri? If these are known and the temperature is known, then the low-temperature gage length can be calculated.
This effect depends not only on the resonant frequency but the Q of the resonance. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
These should be speci? The resolution of the extensometer system at 0 mm is 0. The gage length can be calculated from the known properties of the reference specimen and compared with the measurement. Extensometers that use autographic methods shall have their charts read and recorded using a suitable measuring device, such as a vernier or dial caliper. Active view current version of standard Translated Standard: Extensometer systems are classified on the basis of the magnitude of their errors.
This standard is also available to be included in Standards Subscriptions. Extensometer systems shall be classified in accordance with the requirements as to maximum error of strain indicated: If the reading does not return to zero, adjust and repeat the procedure until the reading does return to zero.
ASTM E83 – 16
If readout devices are always used in combination, individual veri? This will insure similar thermal and optical conditions exist and, hence, similar effects on the strain measurement should be observed.
NOTE 7—If an extensometer is equipped with a dial micrometer, it may be necessary to lightly tap the dial micrometer to minimize the effects of aztm and to ensure that the most stable and reproducible readings are obtained.
For direct-reading extensometers the calibration factor is unity. In general, both the amplitude and phase of the instrument may change as a function of frequency effects. Manufacturers of extensometers should provide performance characteristics of their instruments under typical operating test conditions.
Extensometer systems are classified on the basis of the magnitude of their errors.
ASTM E83 – 10a Standard Practice for Verification and Classification of Extensometer Systems
Extensometer systems are classi? The accuracy of the gage length is dependent ast the accuracy of the instrument and does not rely on precise placement of the? We have no amendments or corrections for this standard. A number in parentheses indicates the year of last reapproval.
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