本文介绍了用于该试验的径向冲击试验机、扭转疲劳试验机、旋转弯曲疲劳试验机和径向载荷疲劳试验机的结构形式及性能特点。

This paper presents the structural features and characteristics of the radial impact tester, torsional fatigue tester, rotary bending tester and radial load tester used for the tests.

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得到了这两种铝合金冲击和未冲击的拉一拉疲劳试验数据。

The pull-pull fatigue test data of both laser shocked and unshocked test pieces (or sections) are obtained.

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根据试验测定的焊缝各区冲击韧性、断裂韧性、疲劳裂纹扩展速率和疲劳裂纹扩展门槛值，对焊缝力学性能作出综合评价。

The mechanical properties of the butt welded joints have been evaluated according to the impulsive and fracture toughness as well as the rate and threshold values of fatigue crack propagation.

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