178mm厚690MPa级特厚海洋工程用钢板平面应变断裂韧度试验(KIC),试样均为单侧减薄,减薄厚度分别为20mm、30mm,取向为钢板横向。
Plane strain fracture toughness test (KIC) of 178 mm thick 690 MPa grade marine engineering steel plate. The specimens were all unilaterally thinned, with a thickness of 20mm and 30mm respectively, and the orientation was transverse to the steel plate.