ASTM E831 PDF

ASTM E831 PDF

Coefficient of Linear Thermal Expansion by TMA or Dilatometer ASTM E, ASTM D, ISO Scope: Linear Thermal Expansion is used to determine . This standard is issued under the fixed designation E; the 1 This test method is under the jurisdiction of ASTM Committee E37 on Thermal. ASTM E Linear Thermal Expansion of Solid Materials by Thermomechanical Analysis_机械/仪表_工程科技_专业资料。Designation: E

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Other heating rates may be used but shall be noted in the report. Last previous edition approved in as E — Other lengths may be used, but shall be noted in the report. NOTE 7—For best results, specimen temperature gradients should be small. Maximum imprecision in the calculated coefficient asmt linear thermal expansion may be estimated from the imprecisions in the individual measurements by the following equation. NOTE 6—Normally, sstm expansion increases with the increase in temperature as shown in the schematic diagram of Fig.

For the dilatometer, the test sample should be approximately Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. It is the responsibility of the user to determine the necessary equivalency prior zstm use.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

The specimen must be flat on both ends. In the case of dispute, only the manual procedures described in this test method are to be considered valid. Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. Evaluating how your products and services meet and exceed quality, ee831, sustainability and performance standards.

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The effects of specimen temperature gradients may be compensated for by correction found through the use of suitable reference materials whose size and thermal conductivity are close to wstm of the test specimen. NOTE 5—Direct readout of zero position and specimen e81 using the analyzer sensing element, where available, with a sufficient range has been found to be an accurate means of length determination.

Need help or have a question? This standard does not purport to address all of the safety e8311, if any, associated with its use. Standard Test Method f The observed expansion must be corrected for the difference in expansion between the specimen holder and probe obtained from a blank run in which no sample or a specimen of the material of construction of the probe is run.

Send us a request Need help or have a question? Place the specimen temperature sensor in contact with the specimen or as near to the specimen as possible. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of asgm standard. Qstm refrigerant used for cooling shall not come into direct contact with the specimen.

Coefficient of Linear Thermal Expansion ASTM E831, ASTM D696, ISO 11359

Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

This test method uses a smaller specimen and substantially different apparatus than Test Methods E and D Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Work Item s – proposed revisions of this standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

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Note 1 Users of this test method are expressly advised that all such instruments or techniques may not be equivalent.

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.

The test method may 8e31 used at lower or negative expansion levels with decreased accuracy and precision see Section Coefficient of Linear Thermal Expansion Video Learn more about linear thermal expansion in this video. A number in parentheses indicates the year of last reapproval.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Active view current version of standard. This test can be used for design purposes and to determine if failure by thermal stress may occur. 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.

ASTM E Linear Thermal Expansion of Solid Materials by Thermomechanical Analysis_百度文库

Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Linear Thermal Expansion is used to determine the rate at which a material expands as a function of temperature. Depending on the compressibility of the awtm and the temperature range to be investigated, a force of between 1 and mN 0.

Auditing Consulting Sourcing Training. The specimen is r831 at a specified rate, often ten degrees a minute, over the desired temperature range.

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