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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Active view current version of standard. 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.
Standards Subscriptions from Astmm provides a money-saving, multi-user solution for accessing standards. It is naive to perform a static veri? This effect depends not only on the resonant frequency but the Q of the resonance.
The mechanism astmm for moving one spindle relative to the other shall permit sensitive adjustments. Calibration adjustments may then be made to the extensometer system after which astmm required veri? The component due to the extensometer system resolution at 10 mm, uR1 is: It is not the measurement uncertainty of the extensometer or the measurement uncertainty of test results determined using the extensometer.
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
Report all percent values of accuracy, and report the indicator resolution at least once per decade. In addition to the terms listed, see Terminology E 6. Extensometer systems are classified on the basis of the magnitude of their errors. In addition, the gage length error for Type 1 extensometers shall not exceed the greater of the values shown in Table 1. Extensometer systems are classified on the basis of the magnitude of their errors.
This appendix is not intended to provide speci? B The strain of an Extensometer System is the ratio of applied extension to the gage length. You may delete a document from your Alert Profile at any time. If the extensometer is used with closed loop test equipment in strain control, the backlash could result in large tension or compression loads during the initial part of the loading curve. They may be veri?
ASTM E83 – 16
Errors are based on net values from the zero point to each successive veri? Allow sufficient time for the veri?
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
For direct-reading extensometers the calibration factor is unity. Work Item s – proposed revisions of this standard. Link f83 Active This link will always route to the current Active version of the standard.
Link to Active This link will always route to the current Active version of the standard. It is the responsibility of the s83 of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 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 friction and to ensure that the most stable and reproducible readings are obtained.
ASTM E83 – 10a Standard Practice for Verification and Classification of Extensometer Systems
This standard has been approved for use by agencies of the Department of Defense. The precision associated with gage length setting for a Type 2 extensometer should be speci? This standard is not included in any packages. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement qstm such rights, are entirely their own responsibility.
In general, both the amplitude and phase of the instrument may change as a axtm of frequency effects. Extensometer systems are classified on the basis of the magnitude of their errors.
If the machine system resolution is 0. The only prudent approach is to perform a Practice E 83 type of veri? The differences between individual measurements shall not exceed the tolerance given for the class of extensometer. Please first log in with a verified email before subscribing to alerts. A superscript epsilon e indicates an editorial change since the last revision or reapproval. If standard gage blocks and an indicator, or a micrometer screw, are used, they shall be calibrated and their limits of accuracy and sensitivity stated.
The actual lowtemperature gage length would be different since the material would change in length according to its coefficient of expansion characteristics. 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.