ISO 24999-2008 软质泡沫聚合材料.使用恒定应变程序测定疲劳度
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标准号:ISO 24999-2008
中文标准名称:软质泡沫聚合材料.使用恒定应变程序测定疲劳度
英文标准名称:Flexible cellular polymeric materials - Determination of fatigue by a constant-strain procedure
标准类型:G32
发布日期:2008/7/1 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:G32
国际标准分类号:83.100
引用标准:ISO 1923
适用范围:This International Standard specifies a method for determining the loss in thickness of flexible cellularmaterials when compressed repetitively to a fixed level of strain. It is particularly useful for quality control inthe manufacture of flexible polymeric cellular materials.Another procedure already exists as ISO 3385: this measures the fatigue characteristics of flexible polymericcellular materials by constant-stress loading of the specimen rather than constant strain. It forms the basis of amaterial classification system in ISO 5999.These two fatigue procedures are complementary to each other and can both be useful in the prediction ofend-use performance.The procedure and equipment used in this International Standard allow testing of a large number of testpieces at any one time, whereas ISO 3385 only allows testing of one test piece at a time under thecompression device.
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