Through physical and chemical experiments, it is obtained that the break of the CAM shaft is a torsional fatigue break.
通过理化试验，得出凸轮轴断口属扭转疲劳断口。
The initiation stage and short crack behaviour in torsional fatigue of medium carbon steel was investigated by using a replication technique.
通过扭转疲劳试验和塑料复型膜技术研究了中碳钢试样的疲劳短裂纹特性。
Therefore the design criterion for the shaft is proposed, i. e. the fatigue strength of the shaf should depend on the torsional fatigue strength.
挠性轴强度校核主要是校核疲劳强度，为此提出了合理设计挠性轴的原则，即挠性轴的疲劳强度应取决于扭转疲劳强度。
The repeated torsional fatigue property of Australian wool, (quality number:70) is tested on the fibre repeated torsional fatigue tester which is designed by the authors.
在自行设计的羊纤维扭转疲劳试验仪上测试了品质支数为70的羊毛的重复扭转疲劳性能。
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.
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。
Torsional and bending load spectra of drive shaft are worked out and fatigue life of the shaft estimated.
编制出驱动轮轴扭转与弯曲载荷谱，并对驱动轮轴的随机疲劳寿命进行了估算。
The fatigue rupture made up 80 percent of the total petroleum drillstring failures, which is related to the flexural-torsional alternate stress acted on drillstring.
石油钻柱的失效80 %以上都为疲劳破坏，这与钻柱在弯曲和扭转组合下的交变应力有关。
The results show that low cycle fatigue life is reduced and cyclic stress is raised by torsional prestrain raising.
结果表明，扭转预应变降低低周疲劳寿命，循环应力随扭转预应变的增大而增大。
The results show that low cycle fatigue life is reduced and cyclic stress is raised by torsional prestrain raising.
结果表明，扭转预应变降低低周疲劳寿命，循环应力随扭转预应变的增大而增大。
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