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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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?
Maintain temperature stability by excluding drafts throughout the subsequent veri? Link to Active This link will always route to the current Active version of the standard. NOTE 5—Extensometers used for high-temperature testing may be veri? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Although this information is seldom adequate to allow the user to ignore errors due to their speci?
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
The calibration procedure may include adjustment of span or determination of calibration factor, or both. The errors of the veri? Need more than one copy?
Please first verify your adtm before subscribing to alerts. It is recommended that the same environmental chamber furnace or cryostat be used for the veri?
NOTE 1—Bonded resistance strain gages directly bonded to a specimen cannot be calibrated or veri?
ASTM E83 – 10a Standard Practice for Verification and Classification of Extensometer Systems
NOTE 8—If the connection between the gage points attached to the specimen and the indicating device is made through geared wheels or micrometer screws, relatively large periodic errors may exist which might not be disclosed by this overall procedure.
The practice is applicable sstm to instruments that indicate or record values that are proportional to changes in length corresponding to either tensile or compressive strain. Please first log in with a verified email before subscribing to alerts.
An extensometer of known dynamic properties can be used in parallel with the device in question, and a comparison of the results can be made as a function atm frequency.
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Ideally, this test should result in zero output over the performance range of interest. This appendix is not intended to provide speci? This abstract is a brief summary of the referenced standard.
ASTM E83 – 16
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. It may consist of a rigid frame, suitable coaxial spindles, or other? Report all percent values of accuracy, and report the indicator resolution at least once per decade. There are to be at least?
Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
These applied strains are compared with the indicated strains from the Type 3 extensometer systems, in order to establish its classi? Extensometer systems are classified on the basis of the magnitude of their errors. Aetm Item s – proposed revisions of this standard. It is not the measurement uncertainty of the extensometer or the measurement uncertainty of test results determined using the extensometer. An extensometer system may be one of three types.
When greater temperature variations occur, the uncertainty due to this increased temperature variation shall be included in the determination of measurement uncertainty. 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. Remove any dirt particles which may have accumulated through normal use of the instrument.
See procedures as described in Test Methods E Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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.
ASTM Ea – Standard Practice for Verification and Classification of Extensometer Systems
If the machine system resolution is 0. R83 effect depends not only on the resonant frequency but the Q of the resonance. Extensometers that contain large mechanical elements may have inertial effects which at high frequencies cause forces on the attachment points to the specimen. Your Alert Profile lists the documents that will be monitored. A verification procedure for extensometer systems shall be done in accordance with the specified requirements.
As an alternative, after individual veri? Aliasing can also be a factor in digital systems. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are s83 provided as part of the standard.