Flexible cellular polymeric materials Determination of fatigue by a constant-strain procedure

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

23-06-2008

Publisher

International Organization for Standardization

ISO 24999:2008 specifies a method for determining the loss in thickness of flexible cellular materials when compressed repetitively to a fixed level of strain. It is particularly useful for quality control in the manufacture of flexible polymeric cellular materials.

Another procedure already exists as ISO 3385: this measures the fatigue characteristics of flexible polymeric cellular materials by constant-stress loading of the specimen rather than constant strain. It forms the basis of a material classification system in ISO 5999.

These two fatigue procedures are complementary to each other and can both be useful in the prediction of end-use performance.

The procedure and equipment used in this International Standard allow testing of a large number of test pieces at any one time, whereas ISO 3385 only allows testing of one test piece at a time under the compression device.

DevelopmentNote	Supersedes ISO/DIS 24999. (06/2008)
DocumentType	Standard
Pages	6
ProductNote	THIS STANDARD HAVE CORRECT VERSION FOR ENGLISH
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
NEN ISO 24999 : 2008	Identical

ISO 1923:1981	Cellular plastics and rubbers — Determination of linear dimensions
ISO 23529:2016	Rubber General procedures for preparing and conditioning test pieces for physical test methods
ISO 3385:2014	Flexible cellular polymeric materials — Determination of fatigue by constant-load pounding
ISO 5999:2013	Flexible cellular polymeric materials — Polyurethane foam for load-bearing applications excluding carpet underlay — Specification
ISO/TR 9272:2005	Rubber and rubber products Determination of precision for test method standards