In this paper, the test results of bending concrete specimens are shown, and the vlues of plane-strain fracture toughness, calculated by four different methods, are compared with one another.
本文，对混凝土弯曲试样进行了测试，并用四种不同的方法进行了平面应变断裂韧性的计算和比较。
2
The values of the planestrain fracture toughness of the seven home-made high strength steels tested by this method are given.
最后给出了用上述方法测定的七种在给定热处理条件下的国产高强钢的平面应变断裂韧度值。
3
Planestrain fracture toughness (KIc). The critical value of the stress intensity factor (i. e., at which crack propagation occurs) for the condition of planestrain.