Specimens can be square or circular with a preferred width or diameter of 6". Data must usually be obtained from a complete load-deformation curve, and the useful working range normally corresponds to only a portion of the curve. The user is cautioned against use of the product in the range beyond which the product is permanently damaged or properties are adversely affected. Standard loading rates shall not be used arbitrarily for all purposes; the effects of impact, creep, fatigue, and repeated cycling must be considered.
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The minimum so that the load will be uniformly distributed. Keep shall be no greater than the width or diameter. This shall not exceed the range from circular with a minimum width or diameter of 6.
The minimum thickness shall be 1. In general, higher crosshead speeds compressive modulus. Therefore, use the same thickness for comparisons usually result in higher compressive resistance values.
The thinner the specimen, the higher the compressive resistance and the lower the deformation at yield. In the absence of such specifications the minimum 7.
This will cause a slight number of specimens shall be at least four, chosen at random to preload to be applied to the specimen. Change the loading represent the lot. Where the original surfaces of the block are substantially plane and parallel, no special preparation of the surfaces will usually be necessary. Each dimension shall be the average of at least two measurements taken on each specimen face.
If the direction of loading in service is unknown and the material 7. If it is not, use the dial gage comparator. Average three measurements. If the the testing machine, taking care that the centerlines of the material is affected adversely by oven temperatures, the speci- specimen and the testing machine coincide.
ASTM C165 Compressive Test of Thermal Insulations
The minimum so that the load will be uniformly distributed. Keep shall be no greater than the width or diameter. This shall not exceed the range from circular with a minimum width or diameter of 6. The minimum thickness shall be 1. In general, higher crosshead speeds compressive modulus. Therefore, use the same thickness for comparisons usually result in higher compressive resistance values.
ASTM C165 – 断熱材の圧縮特性を測定するための標準試験方法
Scope 1. Such behavior is typical of most rigid board or block-type insulations. Such behavior is typical of fibrous batt and blanket insulations that have been compressed previously to at least the same deformation by compression packaging or mechanical softening. For example, some batt or blanket materials that have not been compression packaged will exhibit behavior more typical of Procedure A for their first loadings. Also, some higher density fibrous insulation boards that have been precompressed will exhibit load-deformation curves more typical of Procedure B. There will also be thermal insulations with load-deformation curves that follow none of the three types shown here; that is, curves with no straight-line portion, curves with compaction areas, and curves that change from negative to positive slope.