Fracture Strength of Helically Wound Composite Cylinder

Finite Element Vibration Analysis of a Helically Wound Tubular and Laminated Composite Material Beam

Finite element stiffness and consistent mass matrices are derived for helically wound, symmetrical composite tubes. The tubular element is considered to have constant cross-section and small deformations restricted to a plane. Each node has three degrees of freedom: axial and transverse displacement and rotation (slope of transverse displacement). Shell theory and lamination theory are used to ...

Fracture strength of Class II composite resin restorations.

T he superior physical properties of composite resins have aroused the possibility of their use beyond the accepted indications for acrylic resin and silicate cement. The literature has suggested the use of composite resin for Class I,‘m4 Class II,” and Class IV39 * restorations. Other reports advocated the use of composite resin or tested the influence of pins on the physical properties of com...

Fracture strength of cusp-replacing fibre-strengthened composite restorations.

Comparative Evaluation of Fracture Strength of Cusp Coverage with Composite Versus Unsupported Enamel Reinforced with Composite in Posterior Dental Restorations

Background and aim: Efficient bonding techniques should be employed for strengthening tooth structure. Whether to preserve intact dental tissue or to sacrifice some undermined parts can still be challenging. We aimed to evaluate the fracture strength of cusp coverage with composite versus unsupported enamel reinforced with composite in posterior restorations. Materials and methods: In this in...

Berry’s Phase in a Helically Wound Optical Fiber

The quantum topological phase shift known as Berry’s phase is measured using a laser coupled into a helically wound optical fiber. In the context of this experiment, Berry’s phase corresponds to rotations in the plane of polarization of the laser beam due to an adiabatic transport of the beam’s momentum vector through a closed loop. Although parts of the experiment were awash in errors, valid d...