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ASTM D8626/D8626M-25
Standard Test Method for Compression Properties of Flexible Cellular Materials
Standard Test Method for Compression Properties of Flexible Cellular Materials
D8626_D8626M-25
ASTM|D8626_D8626M-25|en-US
Standard Test Method for Compression Properties of Flexible Cellular Materials
Standard
D8626/D8626M Standard Test Method for Compression Properties of Flexible Cellular Materials>
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BOS Vol. 08.03 Committee D20
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ASTM International
Significance and Use
5.1 Compression tests provide a standard method of obtaining data for research and development, quality control, acceptance and rejection under specifications, and special purposes.
5.2 Compression curves are practical for characterizing compressive properties of flexible cellular materials, obtaining stress/strain values, and, if tested under identical conditions and parameters, valuable for comparing one product to another.
5.3 Compression curve data is beneficial to engineers for generating data for use in finite element analysis displaying the loading effects on a particular product.
5.4 Compression curves displaying the loading and unloading curves called hysteresis curves or hysteresis loops provide additional characterization by visualizing and quantifying the elastic and viscoelastic response of the polymer.
5.5 Quantifiable values obtainable from full hysteresis curves include stress/strain values at any given point on the curve, hysteresis loss, and modulus values.
5.6 The data obtained by this test method is applicable to the material under the conditions of the test and not necessarily the same as obtained in other environments or use conditions.
Scope
1.1 This test method covers the determination of compressive properties of flexible cellular materials during compressive loading and unloading at a uniform rate.
1.2 This test method is applicable to open- or closed-cell materials made from expanded synthetic or non-synthetic polymers.
Note 1: There is no equivalent ISO standard available.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, each system shall be used independently of the other.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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.