title: A low cycle fatigue test device for micro-cantilevers based on self-excited vibration principle.
abstract: This paper reports a low-cycle fatigue test device for micro-cantilevers, which are widely used in micro scale structures. The working principle of the device is based on the phenomenon that a micro-cantilever can be set into self-excited vibration between two electrodes under DC voltage. Compared with previous devices, this simple device can produce large strain amplitude on non-notched specimens, and allows a batch of specimens to be tested simultaneously. Forty-two micro-cantilever specimens were tested and their fatigue fracture surfaces exhibit typical low cycle fatigue characteristics. As such, the device is very attractive for future fatigue investigation for micro scale structures.
authors.affiliation: School of Energy and Power Engineering, Beihang University, Beijing 100191, China.
authors.forename: Mingjing
authors.initials: M
authors.lastname: Qi
authors.affiliation: School of Energy and Power Engineering, Beihang University, Beijing 100191, China.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Energy and Power Engineering, Beihang University, Beijing 100191, China.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Yan
mesh_terms: D008422:Materials Testing / Q000295:instrumentation*; D055616:Microtechnology / Q000295:instrumentation*; D013314:Stress, Mechanical; D013718:Tensile Strength; D014732:Vibration