Fracture of Notched Wood under Impact Load
Kiyoshi Sato, Hisato Yamamoto and Takeshi Yamanouchi
Abstract:In this study, new methodology is proposed for the study on the fracture under Mode I impact load. Using this method, Mode I impact fracture experiment was carried out at room emperature to study the effect of impact velocity on the Mode I fracture strain of wood by using CT specimen. Impact velocity was about 8-18 m/s. The materials used for the experiment were western hemlocck, Japanese cypress, Alaska cedar, agathis and tamo lumbers. Mode I impact fracture strain is about half of Mode I static fracture strain. Key Words:Impact load, Impact velocity, CT specimen, Fracture strain, Wood