Anisotropic properties of materials can be determined by measuring the propagation of elastic waves in different directions. A laser imaging approach is presented that utilizes the adaptive property of photorefractive materials to produce a real-time measurement of the antisymmetric Lamb or flexural traveling wave mode displacement and phase. Continuous excitation is employed and the data is re...

The aim of this study is to investigate the capability of the image source method (ISM) for predicting medium and high frequency flexural vibrations of damped convex polygonal thin plates including various boundary conditions. Besides its classical use in room acoustics, ISM has already been applied to polygonal plates comprising simply supported and roller supported edges. Such boundaries incl...

In this article, an exact levy solution is presented for bending analysis of a functionally graded (FG) annular sector plate. The governing equilibrium equations are obtained based on the classical plate theory. Introducing an analytical method for the first time, the three coupled governing equilibrium equations are replaced by an independent equation in term of transverse deflection. This equ...

In this paper, an analytical model is developed to determine the torsional-flexural buckling load of a channel column braced by unevenly distributed batten plates. Solutions of the critical buckling loads were derived for three boundary cases using the energy method in which the rotating angle between the adjacent battens was presented in the form of a piecewise cubic Hermite interpolation (PCH...

Measurements of the velocities of the extensional and flexural plate modes were made along three directions of propagation in four graphite/ epoxy composite plates. The acoustic signals were generated by simulated acoustic emission events (pencil lead breaks or Hsu-Neilsen sources) and detected by broad band ultrasonic transducers. The first arrival of the extensional plate mode, which is nondi...

Differing from the traditional method of treating the motion of ring valve-plates as translational or inclined motions of rigid bodies, this paper originated from the concept on deformations involved in the motion processes. Emphasis of research is centered on flexural warping vibrations during opening and closing. Mechanical modelling and mathematical interpretions of plate motion with various...

The aim of this study is to compare the metallic and natural fiber reinforced polymer composite bone plates used in humerus fractures. A 3D finite element model was developed to analyze the performance of both types of plates. This study proposed on fabrication of natural fiber powdered material (like Sisal (Agave sisalana), Banana (Musa sapientum) and Roselle (Hibiscus sabdariffa)) Reinforced ...

The buckling mechanism of diagonally stiffened plates under the combined action shear, bending, and compression is a complex phenomenon that difficult to describe with simple clear explicit expressions. Predicting elastic coefficient accurately crucial for calculating load these plates. Several factors influence plates, including plate’s aspect ratio, stiffener’s flexural torsional rigidity, in...