نتایج جستجو برای: ورقه های frp

تعداد نتایج: 480945  

2006
Xianlin Shen Norbert H. Maerz John J. Myers

The use of bonded fiber reinforced polymer (FRP) sheets for upgrade or repair of aging and deteriorating concrete structure has emerged as a viable and cost effective method. Previous research has identified several items that influence FRP-concrete bond strength including concrete strength, type of FRP laminate, the number of layers of the FRP laminate, and the bonding agent or epoxy saturant ...

2008
Neil Sculthorpe Henrik Nilsson

Functional Reactive Programming (FRP) is an approach to reactive programming where systems are structured as networks of functions operating on signals. FRP is based on the synchronous data-flow paradigm and supports both continuous-time and discrete-time signals (hybrid systems). What sets FRP apart from most other languages for similar applications is its support for systems with dynamic stru...

2015
Y. Zhao C. Viechtbauer K. J. Loh M. Schagerl

Today the rapid growth of fiber-reinforced polymer (FRP) applications in the automotive and aerospace industry has motivated many researches to perform life-cycle analyses of FRP structures. While its strength-to-weight ratio outperforms conventional metals, FRP is inherently heterogeneous and experiences complex failure modes, thus making them challenging for structural analysis and design. As...

Journal: :Journal of biological rhythms 1999
J C Comolli J W Hastings

The protein kinase inhibitor staurosporine was found to cause a dramatic increase in the free-running period (FRP) of circadian rhythms in the dinoflagellate Gonyaulax polyedra, and its effect was similar when added at different phases of the circadian cycle. Chronic exposure to staurosporine lengthened the FRP by as much as 7 h without significantly affecting the amplitude or waveform of the b...

2002
Zhishen Wu

Effective application of FRP to concrete structure is not possible until a fundamental understanding of the mechanics and failure mechanisms of the retrofit system is available. This paper is mainly focused on developing a methodology for predicting the debonding failure caused by intermediate flexural cracks in FRP-strengthened R/C beam. Firstly, based on the strain compatibility, an iterative...

2005
E. Lorenz D. Oertel B. Zhukov M. Wooster G. Roberts G. Perry I. Csiszar

Fire parameter estimation is performed using data obtained quasi-simultaneously by the Hot Spot Recognition System (HSRS) on the experimental Bi-spectral InfraRed Detection (BIRD) satellite and the MODerate resolution Imaging Spectro-radiometer (MODIS) on EOS Terra. Compared with the higher spatial resolution BIRD data, MODIS can not detect small fires, which leads in some cases to an underesti...

بهارک برادران نویری, فخر الدین دانش

کاربرد مواد FRP بدلیل داشتن ویژگی های ممتازی چون نسبت بالای مقاومت به وزن، دوام در برابر خوردگی و سرعت و سهولت در حمل و نصب، به سرعت رو به افزایش است. استفاده از میلگردهای FRP به جای میلگردهای فولادی به­طور قابل ملاحظه ای از زیان های ناشی از بروز خوردگی در اعضای بتنی به خصوص در سازه های مجاور آب هاجلوگیری می‏‌کند. در این مقاله به منظور بررسی اثر جایگزینی آرماتورهای فولادی ستون با آرماتورهایFRP،...

2012
S. Rizkalla M. Dawood

This paper presents several advancements in the use of fiber reinforced polymer (FRP) materials for the precast concrete industry. Precast concrete members are commonly selected for reasons such as the high level of quality control used in their production, the durability of the finished structure, reduced labor costs and shorter construction schedules, and the economics of scale achieved with ...

2003
Antonio Nanni

21 Abstract 22 23 This paper reports on the North American state-of-the-art in the use of FRP composites in concrete structures. For new 24 construction, FRP bars have been used as the internal reinforcement in concrete members to replace conventional steel rebars for 25 a host of reasons. The principles for design and construction have been established and proposed to industry by the American ...

2005
A. Nanni Maralee Jones

This paper reports on the key features of the “Guide for the Design and Construction of Concrete Reinforced with FRP Bars” issued by the American Concrete Institute (ACI). For new construction, FRP bars have been used as the internal reinforcement in concrete members to replace conventional steel rebars for a host of reasons. The principles for design and construction were first established and...

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