关键词: 木材断裂, 线弹性断裂力学, 断裂韧性, 测试方法

Abstract:

The particularity about applying the principles of linear elastic fracture mechanics (LEFM) to wood were expounded. The fracture toughness K^TL_IC parallel to grain of wood of Chinese fir (C.lanceolata) and Masson pine (P.massoniana) were determined with different samples and methods. The results showed that LEMF based on isotropic material is suited for wood crack growth parallel to grain. The fracture toughness parallel to grain is a basic property of wood.

Key words: Wood fracture, Liner electric fracture mechanics, Fracture toughness, Test technique