Topic
Vibration fatigue
About: Vibration fatigue is a research topic. Over the lifetime, 3460 publications have been published within this topic receiving 46297 citations.
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TL;DR: In this paper, the authors presented a comprehensive investigation into non-proportional loading induced multi-axial fatigue damage in aluminum alloys using a recently developed multiaxial fatigue-damaging parameter.
31 citations
TL;DR: In this article, the reliability of gold components for microelectromechanical systems applications is studied by evaluating the mechanical fatigue behavior of gold microbeams under tensile variable load with different levels of mean and alternate stresses.
Abstract: In this paper, the reliability of gold components for microelectromechanical systems applications is studied by evaluating the mechanical fatigue behavior. The lifetime of microspecimens under alternate loads with different mean stress conditions is tested with the introduction of an original experimental procedure. Dedicated fatigue test devices are designed and fabricated with the aim of producing an alternate load on the embedded specimen. Electrostatic actuation is used as a driving force. Gold microbeams are tested under tensile variable load with different levels of mean and alternate stresses. FEM models are exploited to estimate the stress level produced in the material under the variable actuation conditions. Experimental results are analyzed to investigate the effects of different mean stress levels on lifetime under mechanical fatigue. The fatigue results are represented by a Goodman-Smith diagram scheme. Surface topography degradation is monitored through scanning electron microscope images. The modes of failure are in agreement with the literature, which is a consequence of fatigue degradation.
31 citations
18 Apr 2012
TL;DR: In this article, the fatigue strength of turbine blades is considered in the design of the turbine blades of a turbine and it is expected that fatigue strength will be a major consideration in their design.
Abstract: Tidal turbine blades experience significant fatigue cycles during operation and it is expected that fatigue strength will be a major consideration in their design. Glass fibre reinforced polymers a...
31 citations
TL;DR: In this paper, a new strain-life fatigue test is introduced in which periodic large strain cycles reduce the crack opening stress for subsequent smaller cycles, and the overloads are applied frequently enough that closure free fully open crack growth is achieved for the small cycles in the long life regime.
31 citations
TL;DR: In this paper, the effects and control of dissipative heating of a working specimen and the role of efficient matrix-to-fiber stress transfer are considered, and a test procedure with which the severity of dissipation can be continuously followed and controlled during an accelerated fatigue test is described.
Abstract: The fatigue failure of thermoplastics and glass-reinforced thermoplastics is a function of cyclic stress or deflection level, test frequency, viscoelastic polymer parameters and matrix-to-fiber stress transfer. This paper reports an investigation of the modes of high frequency fatigue failure in glass-reinforced and unreinforced thermoplastics. In particular the effects and control of dissipative heating of a working specimen and the role of efficient matrix-to-fiber stress transfer are considered. A test procedure with which the severity of dissipative heating can be continuously followed and controlled during an accelerated fatigue test is described.
30 citations