In this paper, errors involved in extracting stress intensity factors from photoelastic fringe pattern, which were simulated for crack estimated. The estimated errors do not contain the errors associated with the optical apparatus, but only consist of the errors associated with discretization and extraction of data for SIF’s calculation to accomplish that. A series of fringe pattern were simula...

For normal healthy teeth, the percussive energy generated by mastication is attenuated by the periodontal ligament at the healthy bone/natural tooth interface. However, when a natural tooth must be replaced by an implant because of damage or disease, the ligament is lost and the implant will transmit the percussive forces to the bone directly. Studies have evaluated the deformation distribution...

We produce minimal integrity bases for both isotropic and hemitropic invariant algebras (and more generally covariant algebras) of most common bidimensional constitutive tensors — possibly coupled laws, including piezoelectricity law, photoelasticity, Eshelby elasticity tensors, complex viscoelasticity tensor, Hill elasto-plasticity, (totally symmetric) fabric up to twelfth-order. The concept c...

Integrated photoelasticity is investigated for a soft material subjected to three-dimensional stress state. In the experiment, solid sphere pressed against gelatin gel (Young's modulus about 4.2 kPa) that deforms up 4.5 mm depending on loading forces. The resulting photoelastic parameters (phase retardation, azimuthal angle, and stress-optic coefficient) in are measured using polarization camer...