定义
Definition
疲劳试验机特点是可以实现高负荷、高频率、低消耗，从而缩短试验时间，降低试验费用。
Fatigue testing machine is characterized by high load, high frequency and low consumption, which can shorten the test time and reduce the test cost.
疲劳试验机用于进行测定金属、合金材料及其构件（如操作关节、固接件、螺旋运动件等）在室温状态下的拉伸、压缩或拉压交变负荷的疲劳特性、疲劳寿命、预制裂纹及裂纹扩展试验。高频疲劳试验机在配备相应试验夹具后，可进行正弦载荷下的三点弯曲试验、四点弯曲试验、薄板材拉伸试验、厚板材拉伸试验、强化钢条拉伸试验、链条拉伸试验、固接件试验、连杆试验、扭转疲劳试验、弯扭复合疲劳试验、交互弯曲疲劳试验、CT试验、CCT试验、齿轮疲劳试验等。
Fatigue testing machine is used to test the fatigue characteristics, fatigue life, prefabricated cracks and crack growth of metal and alloy materials and components (such as operating joints, fasteners, screw moving parts, etc.) under tension, compression or alternating tension and compression loads at room temperature. After equipped with the corresponding test fixture, the high frequency fatigue testing machine can carry out three-point bending test, four-point bending test, thin plate tensile test, thick plate tensile test, reinforced steel bar tensile test, chain tensile test, fastener test, connecting rod test, torsional fatigue test and bending-torsion composite fatigue test under sinusoidal load. Interactive bending fatigue test, CT test, CCT test, gear fatigue test, etc.