| summary(En) : | Incorporated in this report are the results of panel and plate shear test on lauan plywood (3 types A, B, C) panels that did not buckle in test. Each panel was made from 5 plies of a lauan veneer and the angle between the edge of panel and direction of face grain is at 0° and 45°(Table1 1).
It was known that the shear modulus of elasticity measured by plate or panel (B-method) shear test is nearly equivalent in comparison with that mathematically calculated from VOIGT'S theoretical investigation in use of the several YOUNG's modulus of bending or tension, as bending corresponds to plate shear and tension to panel shear, in the same plywood (Table 5, 6).
The value of shear modulus measured by panel shear test (B-method) was quiet equal in the case of both normal and inverse shear, and more correct than the value in A-method, because in the calculated bending deflection on the box-beam with plywood web using of the shear modulus measured by B-method, the theoretical (calculative) value is all the same as the experimental (measured) one (Table 7). |
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