نتایج جستجو برای: nsm gfrp rods
تعداد نتایج: 12940 فیلتر نتایج به سال:
در این مقاله شیوه نوین تقویت، محصورکنندگی ترکیبی با استفاده همزمان از عناصر فولادی مسلح کننده و الیاف FRP، به منظور تقویت ستونها و پایههای بتنی غیرمسلح پیشنهاد و کفایت آن با انجام مطالعه آزمایشگاهی مورد بررسی قرار گرفت. نمونههای استوانهای از بتن با مقاومت پایین ساخته شده و تحت بارگذاری فشاری در شرایط آزمایشگاهی، برخی مشخصههای مکانیکی از قبیل میزان جذب انرژی، تغییر شکل محوری، سختی اولیه و ...
In this study, twenty glass fiber reinforced polymer (GFRP) reinforced concrete specimens were modelled using finite element method to predict the effect of GFRP compressive bars on the flexural strength and ductility of GFRP reinforced concrete beams. Also, the contribution of GFRP longitudinal rebars to the load-carrying capacity of reinforced concrete columns is determined. The concrete elas...
The effects of acid treatment, vapor grown carbon fiber (VGCF) interlayer and the angle, i.e., 0° and 90°, between the rolling stripes of an aluminum (Al) plate and the fiber direction of glass fiber reinforced plastics (GFRP) on the mode II interlaminar mechanical properties of GFRP/Al laminates were investigated. The experimental results of an end notched flexure test demonstrate that the aci...
Drilling of glass fibre reinforced plastic (GFRP) composite is different from metallic materials due to its mechanical properties. The drilling of this material may generate delamination of drilled holes on workpiece. The purpose of this paper is to investigate the influence of the cutting parameters, such as cutting speed and feed rate, point angle of drill and material thickness on delaminati...
The computationally efficient vector quantization for a discrete time source can be performed using lattices over block linear codes or convolutional codes. For high rates (low distortion) and uniform distribution the performance of a multidimensional lattice depends mainly on the normalized second moment (NSM) of the lattice. For relatively low rates (high distortions) and non-uniform distribu...
Tetrahydrobiopterin (BH(4)) is an essential cofactor for the nitric oxide (NO) synthases and the aromatic amino acid hydroxylases. Insufficient BH(4) has been implicated in various cardiovascular and neurological disorders. GTP cyclohydrolase 1 (GTPCH-1) is the rate-limiting enzyme for de novo biosynthesis of BH(4). The authors have recently shown that the interaction of GTPCH-1 with GTP cycloh...
A radar NDE (nondestructive evaluation) technique using an airborne antenna operating in the far-field condition is developed for detecting damages such as delamination and concrete cracking in GFRP (glass fiber reinforced polymer)-wrapped concrete columns. The far-field airborne radar (FAR) NDE technique is advantageous for distant measurement of bridge columns in practical applications. Far-f...
PURPOSE: Complications of nipple-sparing mastectomy (NSM) include necrosis of the nipple-areolar complex (NAC) or mastectomy skin flaps. NAC and mastectomy flap delay procedures are novel techniques designed to avoid these complications, and may be combined with retroareolar biopsy when performed prior to NSM. We performed a systematic review of the literature to evaluate techniques for NAC and...
In this paper, the difference between the Alternating Direction Method (ADM) and the Non-Splitting Method (NSM) is investigated, while both methods applied to the simulations for 2-D multimaterial radiation diffusion issues. Although the ADM have the same accuracy orders with the NSM on the uniform meshes, the accuracy of ADM will decrease on the distorted meshes or the boundary of domain. Nume...
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