Because of the socioeconomic status of the patients, direct resin composite laminate veneers were used to improve the esthetics of their maxillary and mandibular anterior teeth. Laminate veneers are restorations which are envisioned to correct existing abnormalities, esthetic deficiencies and discolorations This case report reflects the use of a innovative composite sculpting instrument ( OPTRA...

We apply Digital Image Correlation (DIC) to X-ray Computed Tomography (CT) slices for characterization of individual fibers misalignment in continuous fiber composites. This is an atypical application DIC since the input a CT tomogram acquired at one time step, whereas typical deformation analysis 2D images captured over consecutive loading steps. The methodology demonstrated and validated on s...

The hygroscopic properties of natural fibers tend to degrade the mechanical composite materials. It is essential investigate influence water absorption behavior on hybrid In this study, laminate materials consisting two different reinforcement materials, i.e., Kevlar and jute in same layer, are considered. Hybrid laminates that have four weaving patterns: plain weave, basket twill satin tested ...

Examination of asbestos fibers by electron microscopical techniques enables the observer to distinguish among the fiber types by morphological and structural characteristics. Chrysotile asbestos fibers are composed of bundles of fibrils. Fibers are often curvilinear with splayed ends. Individual fibrils consist of a central capillary defined by an electron dense crystalline wall. With increasin...

In the realm of aerospace design and performance, there are few boundaries in the never-ending drive for increased performance. This thirst for ever-increased performance of aerospace equipment has driven the aerospace and defense industries into developing exotic, extremely highperformance composites that are pushing the envelope in terms of strength-to-weight ratios, durability, and several o...

In this study, we propose a new IsoGeometric formulation based on Refined Zigzag Theory (RZT), abbreviated as IG-RZT, for static analysis of laminated plates and sandwich panels with curvilinear fiber paths the first time in literature. The original RZT defines constant, linear, zigzag deformation contributions thickness coordinate to in-plane displacements. This kinematic relation can accurate...

Recently, in-situ X-ray Computed Tomography (CT) has shown its potential for 3D damage analysis in composite materials. However, the characterization of tomograms is not always straightforward, and it requires post-processing images. In this study, we explore Digital Volume Correlation (DVC) detection fiber-reinforced composites, where fibers provide required speckle pattern. Preliminary via “d...

Abstract During deep drawing processes of fiber metal laminates, such as the newly developed in-situ hybridization process, fibers and sheets come into contact while dry fabric is infiltrated by a reactive matrix system. The viscosity increases polymerization starts during deep-drawing. In laminate drawn thermoplastic system injected glass layer in resin transfer molding process. forming lamina...

In the present work, the interaction of Rayleigh waves with a delamination in a fiber reinforced composite plate was analyzed. Rayleigh waves, upon interacting with delamination mode, convert into Lamb waves in the delamination zone. These guided Lamb modes have the capability to mode convert back into Rayleigh modes when they interact with the edge of the delamination. A unidirectional glass/e...