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
|Published (Last):||26 April 2010|
|PDF File Size:||8.4 Mb|
|ePub File Size:||12.32 Mb|
|Price:||Free* [*Free Regsitration Required]|
E e8 — 06 Standard Practice for Veri? See procedures as described in Test Methods E If the dial micrometer is tapped during the veri?
ASTM E83 – 16
The accuracy of the gage length is dependent on the accuracy of the instrument and does not rely on precise placement of the? Although it may be difficult to establish effects on zero null point or gage length accuracy, this setup can be used to measure any changes to the span of the device. Extensometer systems are classi?
Extensometer systems are classified on the basis of the magnitude of their errors. Astj may be veri? If standard gage blocks and an indicator, or a micrometer w83, are used, they shall be calibrated and their limits of accuracy and sensitivity stated.
If these are known and the temperature is known, then the low-temperature gage length can be calculated. Take the average of the lengths thus established on each side of the rod as the gage length. The errors of the veri? Link to Active This link will always route to the current Active version of the standard. The only prudent approach is to perform a Practice E 83 type of veri? 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.
Time Interval Between Veri?
ASTM Ea – Standard Practice for Verification and Classification of Extensometer Systems
NOTE 1—Bonded resistance strain gages directly bonded to a specimen cannot be calibrated or veri? Error of StrainB not to Exceed the Greater of: NOTE 4—An example of an extensometer that is described by 5. The mechanism provided for moving one spindle relative to the other shall permit sensitive adjustments. This abstract is a brief summary of the referenced asfm.
Strains in the second successive run are to be approximately the same as those of the?
ASTM E83 – 10a Standard Practice for Verification and Classification of Extensometer Systems
These should be speci? The practice is applicable only to instruments astn indicate or record values that are proportional to changes in length corresponding to either tensile or compressive strain. See procedures as described in Test Methods E This standard has been approved for use by agencies of the Department of Defense.
For direct-reading extensometers the calibration factor is unity. There are to be at least? The use of an optical magnifying device is recommended when reading and measuring autographic records. We have no amendments or corrections for this standard. Aliasing can also be a factor in digital systems.
If the document is revised or amended, you will be notified by email. They result from the following characteristics: In addition to the terms listed, see Terminology E 6.
Allow sufficient time for the veri? This effect depends not only on the resonant frequency but the Q of the resonance. These forces can lead to slipping of the extensometer which will give errors in strain.
You may delete a document from your Alert Profile at any time.