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 article, a series of analytical, finite element and experimental analysis were utilized to determine the steady-state stresses and dynamic characteristic of the blade, which is concluded that the blade fracture was due to high cycle fatigue resulting from a bending mode of resonant vibration which probably caused by aero dynamical disturbances.
30 citations
TL;DR: In this article, a new stress-life damage accumulation model is proposed, calibrated and validated using two different experimental works available in the literature, called the VTLC, for Virtual Life Target Curves.
30 citations
TL;DR: In this article, a crack-size dependent toughness function, based on grain-localized interfacial bridging, and a hyperbolic-sine velocity function, representative of a fundamental activation process, was developed.
Abstract: Fatigue properties in the noncyclic loading of ceramics with R-curves are studied. Particular attention is directed to the potential role of R-curves in the enhancement of fatigue limits. A numerical algorithm for solving the appropriate differential equations of rate-dependent failure is developed. Our formalism specifically incorporates a crack-size dependent toughness function, based on grain-localized interfacial bridging, and a hyperbolic-sine velocity function, representative of a fundamental activation process. In a case study, dynamic fatigue (constant stressing rate) and static fatigue (constant applied stress) data for a coarse-grained alumina with a pronounced R-curve are analysed. With foreknowledge of the toughness parameters, the intrinsic crack-tip velocity function is deconvoluted. This intrinsic function is distinguished from the usual “apparent”, or “shielded”, (and demonstrably nonunique) function determined directly from the external load. It is confirmed that the R-curve, by virtue of its stabilizing influence on the crack growth, significantly enhances the fatigue limit, and confers the quality of “flaw tolerance” on fatigue lifetimes.
30 citations
TL;DR: In this paper, computer software for the prediction of fatigue crack initiation has been developed based on a model derived from the closure behaviour of microcracks and the intrinsic resistance of metals and alloys to fatigue damage.
30 citations
TL;DR: In this paper, a mechanical fatigue test was conducted instead of a thermal cycling test, and a resistance change was monitored to detect a failure at real-time, in order to assess the durability of solder joints between semiconductors and a printed circuit board.
30 citations