Carl-Ernst Rousseau

TL;DR: In this paper, mixed-mode crack tip deformations and fracture parameters in glass-filled epoxy beams with cracks normal to the elastic gradient were studied and a companion finite element model was developed and validated by the measurements.

TL;DR: In this article, a functionally graded composite is prepared and the spatial gradation of Young's modulus in the functionally graded material (FGM) is measured using optical interferometry and cracks are mapped in the FGM under quasi-static loading conditions with cracks oriented perpendicular to the direction of the elastic gradient and near the interface of the graded and the homogeneous portions of three-point bending specimens.

TL;DR: In this article, the fracture behavior of compositionally graded glass-filled epoxy is studied relative to homogeneous counterparts made of identical constituents and the apparent stress intensity factors prior to crack initiation are determined using dynamic equivalent of the stationary fields for FGMs while crack tip fields for steadily growing cracks in FGMs are used for post-initiation situations.

TL;DR: In this article, the effect of different elastic gradient profiles on the fracture behavior of dynamically loaded functionally graded materials (FGM) having cracks parallel to the elastic gradient is studied numerically.

TL;DR: In this article, the authors used crack tip measurements to examine continuum models for FGMs by treating the material as isotropic and nonhomogeneous at macroscales, where cracks are located on the compliant and the stiff sides of the beams are separately examined by mapping cracks using optical interferometry.