By means of photoelasticity, we success in visualizing in real time the propagation of acoustic waves in a granular packing of cylinders. As previously mentioned by Nesterenko [1] for the case of spherical grains, the nonlinearity of the contact law between grains induces a dependence of the wave velocity both on its amplitude and on the confinement force. Our experimental procedure allows an a...

MOD patterns are distorted by expansion of the investment during setting in the casting ring. Using a simple idealized epoxy resin MOD pattern and two-dimensional photoelasticity, this investigation reports the distortion under several conditions, including W/P ratios, cases with and without asbestos lining, number of asbestos layers, condition of the asbestos lining (dry, wet, and applied sili...

In this study, stress of traumatized incisor and the effect of stress on tooth and alveolar bone was studied with two-dimensional photoelasticity. Two homogeneous two-dimensional maxillary central incisor models were prepared. Loads were applied to the labial side of incisal edge and middle third of the crown at angles of 45 degrees and 90 degrees. It was observed that stress was increased on t...

We present a framework for the development of elasticity and photoelasticity relationships for polyethylene terephthalate fiber networks, incorporating aspects of the primary molecular structure. Semicrystalline polymeric fiber networks are modeled as sequentially arranged crystalline and amorphous regions. Rotational isomeric states-Monte Carlo simulations of amorphous chains of up to 360 bond...

Topology optimization is esoteric. Computer-aided design includes. Design objectives and feasibility are the goals. This study optimizes crane hook, a common mechanical component with complex geometry, using topology. The hook should be light but strong. Photoelasticity allows experimental verification of design’s stress distribution by visualizing patterns in birefringent property materials.&#...

A laser interferometry-based technique was developed to locally measure the in-plane components of particle velocity in dynamic experiments. This technique was applied in the experimental investigation of dynamic sliding along the incoherent (frictional) interface of a Homalite–steel bimaterial structure. The bimaterial specimen was subjected to uniform compressive stress and impact-induced she...