BS ISO 1922:2018 pdf

08-22-2020 comment

BS ISO 1922:2018,Rigid cellular plastics – Determination of shear properties.You can download BS ISO 1922:2018 pdf here.
BS ISO 1922:2018 specifies a procedure of determining the shear strength of rigid cellular plastics. It also provides for the determination of shear modulus and shear strain.
2 Normative references
ISO 1923, Cellular plastics and rubbers-Determination of linear dimensions
ISO 7500-1, Metallic materials-Calibration and verification of static uniaxial testing machines-Part I:
Tension/compression testing machines -Calibration and verification of the force-measuring system.
4 Principle
A shear stress is applied to a test specimen of defined shape by means of rigid specimen supports
to the specimen.
There are two procedures:
– Procedure A, which is recommended for shear strength measurement only;
– Procedure B, which uses an extensometer or similar device to measure displacement and is,thus,the recommended method to calculate the shear modulus and strain (and strength as well).
A test machine capable of applying a sufficient force within the maximum displacement experienced in
le shear test.
It shall be capable of operating at a constant rate of movement of the movable head of(1+ 0, 5) mm/min in a direction parallel to the longitudinal axis of the test specimen assembly.

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