GB/T 18942.1-2003: Polymeric materials, cellular flexible -- Determination of stress-strain characteristic in compression -- Part 1: Low-density materials

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Scope

This Part of the standard specifies the method for determining the compressive stress-
strain characteristics of low-density porous elastic materials with a mass fraction of less
than 250 kg/m3.It also describes the method for calculating the compressive stress value
of such materials.
Although such materials may not necessarily have the ability to withstand long-term
loads, the compressive stress-strain characteristics can be used as a measure of the
material's load-bearing performance.
The compressive stress-strain characteristics are different from the indentation hardness
characteristics (measured according to GB/T 12825), which are affected by the
thickness and tensile properties of the tested porous elastic material, the shape of the
compression plate, and the shape and size of the test piece.
Part 2 of this Standard specifies the method for determining compressive stress and
strain in high-density materials and differs from Part 1 in the following respects.
- Primarily relevant for materials with densities above 250 kg/m³.
- Compressive stress values have been eliminated.
- Cylindrical test pieces are not permitted.

Basic Data

Standard ID	GB/T 18942.1-2003 (GB/T18942.1-2003)
Description (Translated English)	Polymeric materials, cellular flexible-Determination of stress-strain characteristic in compression-Part 1: Low-density materials
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G44
Classification of International Standard	83.100
Word Count Estimation	5,563
Date of Issue	2003-01-10
Date of Implementation	2003-07-01
Adopted Standard	ISO 3386-1-1986; IDT
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary	This standard specifies: 250kg/m^3 or less low-density porous elastic material compressive stress-strain characteristics determination, while also illustrates the calculation of such materials compressive stress methods. While such materials may not have long to bear the load capacity, however compressive stress-strain characteristics of the material can be used as anti-load performance measure. Compressive stress-strain characteristics different hardness characteristics recessed (by GB/T 12825 Determination -), latter being test porous elastic material thickness and tensile properties, compression plate shape, specimen shape and size impact. Part 2 of this standard provides a high-density material compressive stress-strain Determination, Part l and different in the following ways: primarily a density greater than 250kg/m ^ 3 Material related. Compressive stress values ??have been canceled. Allowed the cylindrical test piece.