ASTM E228 PDF

Historical Version s - view previous versions of standard. More E The appendix contains information relating to reference materials in current general use. Neglecting proper and accurate temperature measurement will inevitably result in increased uncertainties in the final data. This method is applicable over any practical temperature range where a device can be constructed to satisfy the performance requirements set forth in this standard.

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The concepts and principles have been amply documented in the literature to be equally applicable for operating at higher temperatures. However, their precision and bias have not yet been established over the relevant total range of temperature due to the lack of well-characterized reference materials and the need for interlaboratory comparisons For this purpose, a rigid solid is defined as a material that, at test temperature and under the stresses imposed by instrumentation, has a negligible creep or elastic strain rate, or both, thus insignificantly affecting the precision of thermallength change measurements.

This includes, as examples, metals, ceramics, refractories, glasses, rocks and minerals, graphites, plastics, cements, cured mortars, woods, and a variety of composites The precision of this comparative test method is higher than that of other push-rod dilatometry techniques for example, Test Method D and thermomechanical analysis for example, Test Method E but is significantly lower than that of absolute methods such as interferometry for example, Test Method E It is generally applicable to materials having absolute linear expansion coefficients exceeding 0.

In such cases, a sufficiently long specimen was found to meet the specification The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard This standard does not purport to address all of the safety concerns, if any, associated with its use. 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 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade TBT Committee.

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ASTM E228 – Linear Thermal Expansion of Solid Materials with a Push-Rod Dilatometer

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Active view current version of standard. Other Historical Standards. More E This method is applicable over any practical temperature range where a device can be constructed to satisfy the performance requirements set forth in this standard.

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