Flat crush test of corrugated board (rigid support method), Test Method TAPPI/ANSI T 825 om-14
The flat crush test (1) is a measure of the resistance of the flutes in corrugated board to a crushing force applied perpendicular to the surface of the board under prescribed conditions. The test is satisfactory for single-faced or single wall (double-faced) corrugated board, but not for double-wall or triple-wall corrugated board, because of lateral motion of the central facing or facings. In this method the specimen rests on an essentially rigid support and is tested at a constant deflection rate. See TAPPI T 808 “Flat Crush Test of Corrugated Board” for the procedure in which the specimen rests on a flexing support and is tested at a constant rate of loading. The test methods do not produce similar results.
Flat crush test of corrugated board (flexible beam method), Test Method T 808 cm-15
The flat crush test (1) is a measure of the resistance of the flutes in corrugated board to a crushing force applied perpendicular to the surface of the board under prescribed conditions. The test is satisfactory for single-faced or single wall (double-faced) corrugated board, but not for double-wall or triple-wall corrugated board or other complex corrugated structures, because of lateral motion of the central facing or facings.
Compression testing is a very common testing method that is used to establish the compressive force or crush resistance of a material . Compression tests are used to determine the material behavior under a load. The maximum stress a material can sustain over a period under a load (constant or progressive) is determined.
Compression testing is often done to a break (rupture) or to a limit. When the test is performed to a break, break detection can be defined depending on the type of material being tested. When the test is performed to a limit, either a load limit or deflection limit is used.