S0303-3-7 Measurement of Young's Modulus of the early and late part of wood

Abstract

In this paper, the elastic modulus of the early part and the late part of Japanese cedar is measured by the three methods. These methods are the bending test, micro indentation and nanoindentation. Measured data are compared to each other. It is defined that the measured value by the micro indentation test is smaller than the values by the other two methods. This phenomenon shuld be related to the micro structure of the wood. It is confiremed that the firther study is requierd in order to get distinct mechanism.