BS ISO 12817:2013 pdf free

BS ISO 12817:2013 pdf free.Fibre-reinforced plastic composites一Determination of open-hole compression strength
Load measurement system, comprising a mechanism to indicate continuously the compressive load applied to the test piece. The loading mechanism shall not cause delay due to inertia at the specified test speed and shall indicate the load value with a precision equal to or higher than ±1 % of the full scale of load cell measurement capacity.
Loading platens (method 1 and method 3B), each (platen plate) being located on the movable part (platen plate) and fixed part (base plate), respectively, of the test machine and the centre of the upper and lower pressing faces coinciding with the centreline of the loading direction of the test machine. The alignment of the test fixture shall enable a compressive load to be applied to the platen plate and the base plate in the axial direction of a test specimen, and forces other than the compressive load shall be minimized.
Hydraulic grips (method 2 and method 3A), each located on the movable and fixed parts,respectively, of the test machine and the centre of the upper and lower grips coinciding with the centreline of the load gauge. The test set-up arrangement shall be such that a compressive load is applied to the upper and lower grips in the axial direction of a test specimen, and forces other than the compressive load shall be minimized.
Test fixtures, for method 1 and method 3, which support the test specimen to prevent buckling phenomenon, and which apply compressive load to the test specimen. They shall be made of low-carbon steel or stainless steel. Figure 2 shows an outline of the out-of-plane deformation support fixture assembly for method 1. Figures 3 to 7 show detailed dimensions of the out-of-plane deformation support fixture,L-shaped base plate, end-loading fixtures and support fixture for method 1.
Method 3 requires out-of plane support fixtures. There are two compression-loading conditions for method 3, shear loaded by clamped hydraulic wedge grips (method 3A) and end loaded by platen plates (method 3B). Methods 3A and 3B require the same stabilization fixture. Details of the support fixture for method 3 are given in ASTM D6484/D6484M-09.BS ISO 12817 pdf download.