The multilayer structure of fiber-reinforced polymers may be extracted by ultrasonic pulse-echo inspection. Depending on the employed frequency and subsequent processing methodology, different depth resolution dynamic range can achieved. This study compares performance approaches for extracting ply-by-ply multilayered composites. following methodologies are studied: Method 1: 50 MHz, 15 5 MHz u...

Abstract Made a pioneering attempt to use the lattice sandwich structure in prosthetic foot design and pioneered study for lay-up of foot. An innovative carbon fiber bionic was designed using structure. The effect cross-ply on foot’s energy storage properties vibration characteristics investigated finite element model constructed under normal working conditions according international standards...

To assist in damage tolerant analyses for composites, a compact tension T650/5320 laminate composite was characterized via in-situ X-ray tomography during cyclic loading. A 3D image processing analysis of the fatigue crack growth illustrated various mechanisms, including intralaminar cracking (dominant) and delamination facilitating ply cross-over. finite element conducted to compute change sto...

BACKGROUND For patients with non-small cell lung cancer the TNM staging system and other conventional prognostic factors fail to predict accurately the outcome of treatment and survival. This study attempts to determine the prognostic value for survival of the proportions of CD4+ lymphocytes in the pleural cavity (PLY) of patients with resectable non-small cell lung cancer. METHODS Lymphocyte...

Fused Deposition modelling (FDM) technology is based on decomposition of 3-D computer models into thin cross sectional layers, followed by physically forming the layer and stacking them up layer by layer. FDM provide freedom to add material in the desired area and we are also able to create hollow region in certain portion of layer. In this way low weight with good strength single ply raw mater...

this article deals with the buckling analysis of perfectly bonded cross-ply laminated composite plates reinforced by wavy carbon nanotubes (cnts) under in-plane loads using element free galerkin (efg) method based on first-order shear deformation theory (fsdt). the wavy single-walled cnts and poly-co-vinylene are used for the fibers and the matrix, respectively. the cnt fibers are distributed i...

An investigation of the thermal expansion behavior of ceramic fibrous monoliths (FMs) is presented. The emphasis is on the development and validation of material models applicable to Si3N4/BN FMs in both unidirectional and cross-ply architectures. Approximate analytical models are developed for the coefficient of thermal expansion (CTE) based on the analysis of representative unit cells of the ...