MATERIAL CHARACTERISTICS ESTIMATION OF EXISTING WOODEN STRUCTURES BY NON-DESTRUCTIVE TESTS

摘要

We report the progress of our research projects on improvement of Young's modulus measuring system for existing wooden structures by one of test device, Fakopp based on stress wave velocity. First, we study relation to results from some material test methods such as Tapping-tone technique, Fakopp and bending test. Using improved measuring method of Young's modulus, it can be measured precisely for existing structures.