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1·An experiment on dynamic rock fracture toughness test using edge-notched disc specimen is presented.

提出用边切槽圆盘试样测量岩石动态断裂韧度的实验方法。

2·In this paper, the dynamic fracture toughness measuring method for 921a shipbuilding steel is studied by instrumented Charpy impact test.

本文利用示波冲击试验，对船用921 A钢动态断裂韧性的测试方法进行了研究。

3·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。

4·Within the range of test temperature, the factors controlling the toughness are fracture loads, the lengths of fibrous crack, and the energy absorbed by each fibrous crack extension.

在试验温度区内，控制韧性的因素是断裂载荷、纤维裂纹长度和单位纤维裂纹扩展能量。

5·Their fracture toughness and hardness were determined with Vicker's indentation test machine.

在维氏硬度仪上测试断裂韧性和硬度。

6·The results show that the fracture toughness of Kic increased with lower loading rate and higher test temperature and the incision depth has no significant impact on the test results.

结果显示，断裂韧度随加载速率降低和试验温度提高而增大，而切口深度对结果的影响不显著。

7·There was obvious scattering for the test results of dynamic fracture toughness under high loading rates.

断裂韧度数值在高加载速率下呈现出明显的离散性。

8·Based on the adhesive fracture test results of new and old concrete of the authors, a toughness model of adhesive interface of new and old concrete is put forward.

在新老混凝土粘结面断裂性能试验的基础上，建立了新老混凝土粘结面断裂破坏模式，分析讨论了界面层特性及界面微裂缝扩展对新老混凝土粘结面断裂性能的影响。

9·The method and standard of drop weight tear test were described. It was also discussed how to evaluate the capability of pipeline steel to transit from toughness to fracture by DWTT.

论述了落锤撕裂试验的方法和标准，并对用DWTT来评定管材及其焊接接头的韧脆转化能力进行了探讨。