抄録
In order to evaluate the cryogenic fracture toughness and the temperature rise of G-10 woven glass-epoxy laminates, plane-strain fracture toughness testing was performed with 0.4T compact tension specimens at room temperature, 77K and 4K. Testing was conducted in accordance with ASTM standard E399-83 and JSME standard S001 for determining the fracture toughness. Chromel-vs-Au/0.07% Fe thermocouples were used to measure the temperature rise near the crack tip. The effects of temperature, crack length and crosshead speed on the fracture toughness are examined. The damage morphology around the crack tip of tested specimens was characterized using scanning electron microscopy (SEM).
