نتایج جستجو برای: cross ply
تعداد نتایج: 491703 فیلتر نتایج به سال:
We initiate the study of the vertex-ply of straight-line drawings, as a relaxation of the recently introduced ply number. Consider the disks centered at each vertex with radius equal to half the length of the longest edge incident to the vertex. The vertex-ply of a drawing is determined by the vertex covered by the maximum number of disks. The main motivation for considering this relaxation is ...
BACKGROUND Intranasal inoculation of Streptococcus pneumoniae D39 serotype 2 causes fatal pneumonia in mice. The cytotoxic and inflammatory properties of pneumolysin (PLY) have been implicated in the pathogenesis of pneumococcal pneumonia. METHODS To examine the role of PLY in this experimental model we performed ELISA assays for PLY quantification. The distribution patterns of PLY and apopto...
Introduction Transverse matrix cracking in cross-ply gr/ep laminates was studied with advanced acoustic emission (AE) techniques. The primary goal of this research was to measure the load required to initiate the first transverse matrix crack in cross-ply laminates of different thicknesses. Other methods had been previously used for these measurements including penetrant enhanced radiography, o...
Abstract In this work, the bending behavior of nanoplates subjected to both sinusoidal and uniform loads in hygrothermal environment is investigated. The present plate theory based on classical laminated thin with strain gradient effect take into account nonlocality nanostructures. equilibrium equations have been carried out by using principle virtual works a system partial differential sixth o...
در این پایان نامه رفتار مکانیکی تیرهای کامپوزیتی fgm ارتوتروپیک متصل به مواد پیزوالکتریکی بررسی شده است. لایه های مختلف تیر fgm از مواد کامپوزیتی تقویت شده فیبری بوده که در آن زاویه و کسر حجمی فیبرها به صورت پیوسته و با استفاده از قانون توانی در راستای ضخامت تغییر می کنند. معادلات حاکم سه بعدی پیزوالاستیسیته با استفاده از یک مدل تیر تغییر شکل برشی مرتبه بالا، به معادلات حاکم یک بعدی برای تیرهای...
Abstract This work presents a numerical approach to multi-routines based on experiments, and, with target analyse strength of cross-ply glass fibre reinforced plastics (GFRP) composite after immersion in sulphuric acid solution under pressure (5% H 2 SO 4 solution, 95 °C, 15 bar). Two alternative vinyl ester resins (bisphenol A diglycidyl ether and epoxy phenol novolac) were investigated. After...
Having two stable configurations and no need to any permanent energy sources for remaining in each of these stable states, bi-stable composite plates have gained many applications. This paper has concentrated on control and dynamic response of cross ply bi-stable composite plates (0.90). To do this, using Hamilton principle , Rayleigh-Ritz method, and a MATLAB programme specifically designed fo...
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