J.A. Brandon

TL;DR: In this paper, a finite element scheme for computing the eigensystem for a cracked beam for different degrees of closure was developed, where the finite element method, the component mode synthesis method and the linear elastic fracture mechanics theory were integrated for modelling of the cracked structures.

TL;DR: In this paper, the vibrational characteristics of a cracked Timoshenko beam are analyzed using the finite element method and component mode synthesis, where the beam is divided into two components related by a flexibility matrix which incorporates the interaction forces.

TL;DR: In this article, the effect of cracks on the dynamical characteristics of a cantilever beam, having multiple open-edge transverse cracks, was investigated and the results led to conclusion that, by using the drop in the natural frequencies and the change in the mode shapes, the presence and nature of cracks in a structure can be detected.

TL;DR: In this paper, a vibrating polymeric cantilever beam was found to exhibit two distinct non-linear behaviour patterns, which can be initiated by varying modal participation in a number of different ways: by changing the crack-depth ratio; or by changing frequency of excitation.

TL;DR: In this article, analytical and experimental techniques are applied to a prototype sensor, where a substructuring method is used together with a proprietary finite element package to provide input data for time domain identification algorithms.