Vibration fatigue

TL;DR: In this paper, an improved method for analyzing the variance of the damage for any narrowband Gaussian process was presented, which involves a single summation for arbitrary processes, and closed form solutions for special cases (linear oscillator and bandpass process).

TL;DR: In this article, an analysis and testing process of the prototype of a helicopter's mission system sensor (MSS)-cowling assembly is described, which involves accelerated life testing (ALT) establishes an appropriate methodology for such integration projects.

TL;DR: In this article, a new model is proposed to join the contributions of normal stress and shear stress to the interface fatigue behavior, where the model is a regression surface in a 3D space where the stresses are independent variables while the dependent one is the number of repetitions corresponding to characteristic moments of the test.

TL;DR: In this article, a finite element method (FEM) based on the theory of linear elasticity is presented for the plane-strain problem and two small singular elements are installed at the crack tip to compute the singular field.

TL;DR: In this paper, a model of the random fatigue crack growth under variable amplitude loading for reliability analysis is presented, and the results show that the correlation length of the load process has significant influence on the resulting reliability; the resulting probability of failure can vary up to several orders of magnitude.