Nondestructive Testing of Adhesive-bonded Wood

摘要

Nondestructive testing means to determine characteristic of a material without altering intrinsic properties and shape during the test. In this paper, the dynamical properties of adhesive-bonded wood were measured by nondestructive test (vibration method). From experimental results, dynamic Young's modulus of adhesive-bonded wood can be measured by longitudinal transmission method and flexural vibration method. Dynamic Young's modulus measured by longitudinal transmission method while two acceleration pickups attached to the ends of two wood panels is less than that two acceleration pickups attached to the ends of one wood panel or adhesive layer. Dynamic Young's moduli of the adhesive-bonded wood measured by longitudinal transmission method while two acceleration pickups attached to the ends of two wood panels and out-plane flexural vibration method are relatively close.