Jiping Bai's Advanced fibre-reinforced polymer (FRP) composites for PDF

By Jiping Bai

ISBN-10: 0857094181

ISBN-13: 9780857094186

Over the previous few many years, complex composites have more and more turn into clever fabrics for brand new constructions and the renewal of current civil engineering infrastructures. This ebook specializes in a variety of facets of complex fiber-reinforced polymer (FRP) composites in civil engineering and gives an outline of the purposes of complex FRP composites in civil and structural engineering in 4 components. each one bankruptcy inside of an element is written via a number one specialist (or staff of specialists) and bargains with a selected subject with precise referencing to basic assets for extra research.

Part one offers with FRP composite matrix fabrics which supply the root for composite fabrics, with individuals reviewing the chemistry of phenolic resins including their mechanical and thermal homes, polyester thermoset resins as matrix fabrics, the chemistry of vinylester resins, and epoxy resins usually to be had at the market.
The mechanical houses of FRP composites are based upon the ratio of fiber and matrix fabrics, the mechanical homes of the constituent fabrics, the fiber orientation within the matrix, and finally, the processing and strategies of fabrication, that are the topic of half . Chapters talk about prepreg processing, liquid composite molding (LCM), filament winding tactics, and pultrusion of complex FRP composites.
Part 3 is dedicated to the homes, functionality, and trying out of FRP composites and bargains with the elastic estate research of laminated complicated composites. This part offers a basic review of composite stiffness and assesses unidirectional strengthened composites and appears into the elemental mechanisms occupied with the environmental degradation of FRP composites and the impression of the growing older mechanisms of the polymer matrix at the mechanical homes of composites.
Part 4 stories using FRP composites in numerous structural functions. It covers a large rage of program in civil engineering infrastructures, together with complex FRP composites to bolster buildings liable to seismic harm, FRP composite fabrics for bridge building and rehabilitation, the manufacture and rehabilitation of pipes and tanks within the oil and gasoline undefined, and the rehabilitation of bushes and urban structures.

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Additional info for Advanced fibre-reinforced polymer (FRP) composites for structural applications

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A load can only be carried by a reinforcement if it is transferred to the reinforcement through the interface. , 2004). 3), allowing for favorable interactions with a range of reinforcements. This structural feature, coupled with the low viscosity in the temperature range in which composites are usually prepared, allow phenolic resins to wet the reinforcements, which in turn allows for cross-linking through the © Woodhead Publishing Limited, 2013 Phenolic resins as a matrix material in advanced FRP composites 27 reinforcement.

The condensation products are linear or slightly branched, connected via methylene bridges. , thermoplastic. , 2008). Novolac is called a two-step resin because the HMTA must be added to cross-link the resin. , 2008). The resole phenolic resin is obtained by reacting phenol with an excess of formaldehyde in an alkaline medium (Fig. 2(b)). 0, generating oligomers in water with average molar masses between 600 and 1000 g mol–1. Resole resin has a large number of reactive hydroxymethyl groups and is stable at room temperature, but upon heating it can be transformed into an insoluble and infusible three-dimensional cross-linked polymer.

Regardless of the cure cycle used, the reinforcement of thermosets by 30% (w/w) sisal fibers improved the impact strength by one order of magnitude. , 2010a). 5 Composites from phenolic-type matrices Thermosets such as phenolic thermosets are brittle at room temperature and usually have poor mechanical properties. However, due to the presence of cross-links, thermosets can be used at higher temperatures, as they have higher softening temperatures and better creep properties than thermoplastics.

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Advanced fibre-reinforced polymer (FRP) composites for structural applications by Jiping Bai

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