The invention discloses a small device for load
bending fatigue testing and a method. The device comprises a base, a gantry, a
linear motor module, a
linear motor module bracket, a load sensor, a thrust rod guide wheel
assembly, a thrust rod, a specimen fixed end clamp right support table, a specimen
cantilever end clamp
assembly, a displacement sensor test connective rod, a displacement sensor, adisplacement sensor bracket, a fatigue specimen, a specimen fixed end clamp
assembly, an
environmental chamber, a specimen fixed end clamp left support table, and
control system. The small device forload
bending fatigue testing and the method provided by the invention can realize
fatigue testing of
stress control, strain control, and stress / strain
hybrid control, and achieve a
bending fatigue performance testing with a
stress ratio greater than zero, equal to zero, or less than zero. The advantages of the device are reasonable in structure design, complete in function, and convenient in operation.