The specimen deformation and the crack morphology were studied. After comparing with the fracture of flame chamber of aerojet, the most suitable size and shape of specimen notch has been determined.
研究了试样的变形和裂纹的形态，并与航空喷气发动机的火焰筒的断裂特征进行了比较，找到了最佳的试样缺口的形状和尺寸。
The effect of specimen type, thickness, dimension ratio, and notch sharpness on fracture toughness of a carbon rail steel was examined.
研究了试样类型、试样厚度、比例试样尺寸及切口尖度等因素对普碳轨钢断裂韧性的影响。
The results show that the crack propagation work of V-notched specimen can well reflect the notch sensitivity of the tested steels.
结果表明：V型缺口试样的裂纹扩展功能较好地反映材料的缺口敏感性。
Besides, the fatigue damage for both the boiler steam drum and the notch specimen under varied amplitude low cycles is investigated with the effect of average stress taken into account.
同时还研究了变幅低周疲劳下缺口试件和锅炉汽包的损伤，并考虑了平均应力的影响。
For a given specimen and notch configuration, maximum load is always dependent on the crack length and independent of the material.
对于特定的试样和裂口几何形状，最大荷载与裂纹长度有关，而与材料无关。
Using 945 steel and 921a steel, this article studies the effect of weld profile and size on the cracking behavior of a central notch in a three-notch specimen for an explosion bulge test.
选用水面舰艇用945钢和潜艇用921a钢，研究了不同焊缝外形尺寸对爆炸试验中三缺口试样的中央缺口开裂行为的影响。
The relationship of crack growth rate between lateral notch specimen and plane plate specimen was studied in this paper. A formula for the relationship was established.
主要研究侧槽试样与平板试样裂纹扩展速率之间的关系，并建立了两者关系的效学表达式。
This paper presents a result of researching the microcracking zone near the notch tip of rock specimen in compression shear fracture.
本文介绍了岩石压剪断裂试件切口端部微裂区的研究成果。
The high stress concentration effect of notch can accelerate the process of fatigue crack nucleation in the notch specimen.
缺口试样在缺口的高应力集中效应下，加快疲劳裂纹形核过程。
Based on the continuum damage mechanics, the fatigue damage behavior of a P355NL1 steel specimen with notch under cyclic load was discussed.
采用损伤力学理论，研究了P 355nl1钢含沟槽轴对称试件在交变载荷作用下的疲劳损伤破坏过程。
Results shows that all these three methods can be used to measure the shear strength of explosion cladding interface, and the most practical one is the double-notch method using symmetry specimen.
最后分别对3种方法进行了测试试验。结果表明，3种试验方法均能有效测试爆炸复合接头的剪切强度，其中对称试件双切口拉伸法最适合实际应用。
Under tension with small off-axis angle, the notch in the plane specimen of 3D carbon carbon material propagates self-similarly at first.
在小偏轴角拉伸下，带切口的三向碳碳材料平面试件首先沿切口平面作自相似扩展。
Two drum rotation, a good specimen will deploy along the top of the two rollers into the notch on both sides of the retaining plate also can be slightly adjusted as needed.
两滚筒旋转，将调配好的试料沿两滚筒上方之切槽倒入，两边的挡料板亦也可根据需要略作调整。
Two drum rotation, a good specimen will deploy along the top of the two rollers into the notch on both sides of the retaining plate also can be slightly adjusted as needed.
两滚筒旋转，将调配好的试料沿两滚筒上方之切槽倒入，两边的挡料板亦也可根据需要略作调整。
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