Mechanical Properties of Glass Fiber Reinforced Polymers Members for Structural Applications

Landesmann, Alexandre; Seruti, Carlos Alexandre; Batista, Eduardo de Miranda

doi:10.1590/1516-1439.044615

Cited by 62 publications

(24 citation statements)

References 12 publications

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“…As seen in Figure 11 (a), the maximum load sustained by the virgin sample before final break-up was 150 N. At maximum load, the crack on the sample started developing and brought about a loss of the storage modulus as a sudden drop in the load was witnessed (inset image shows the initial breakage, leading to the initiation of crack propagation and failure at the peak load). Adding extra layers did not increase the tensile strength of the virgin sample, and the maximum tensile stress was found to be comparable with that of the commercially available Vitcas (in as bought condition) glass fibres composite tape (51). The early stage crack initiation followed by the fibre failure was observed ( Figure 11(b) black curve); this is the usual phenomenon observed in the failure of the glass fibre composites (52).…”

Section: Tensile Strength Of the Composite Gfrp Samplesmentioning

confidence: 64%

Novel method of healing the fibre reinforced thermoplastic composite: A potential model for offshore applications

Gupta

Huo

White

et al. 2019

Composites Communications

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Continuous fibre reinforced thermoplastic composites are increasingly finding their use as engineering materials in many industries due to the excellent fire, smoke and toxicity performance. However, the composite component produced using automated continuous fibre reinforced thermoplastic tapes laying machine are susceptible to sudden failure emanating from microscale cracks. This study demonstrates the healing potential of a layered Glass Fibre Reinforced Polymer (GFRP) composite consisting of alternative layers of GFRP and a magnetic polyamide-6 (PA-6) nanocomposite (PNC) film. The self-healing process is presented in three steps, viz. (i) polymer nanocomposite synthesis, (ii) preparation of the layered GFRP layered composite sample and (iii) selfhealing and testing of GFRP layered composite sample. Firstly, the multilayer dog bone sample consisting of a magnetic polymer nanocomposite (PNC) film sandwiched between thermoplastic unidirectional GFRP tapes are prepared. Healing is triggered by exposing the damaged multilayer sample to microwave causing selective heating of nanocomposite film and its subsequent melting. The healing process completes when liquid polymer fills the micro-crack in the multilayer tape through capillary action and solidifies upon cooling. The healing yields 84% of the undamaged tensile strength recovery. Results demonstrate the potential application of an autonomous self-healing method for thermoplastic composite used in the offshore environment.

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Section: Tensile Strength Of the Composite Gfrp Samplesmentioning

confidence: 64%

Novel method of healing the fibre reinforced thermoplastic composite: A potential model for offshore applications

Gupta

Huo

White

et al. 2019

Composites Communications

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“…This fiber is used in various engineered nonwoven structures to be considered as a cheap insulating material and reinforcement preforms for relatively low performance composites like fiber glass and heat-resistant materials. The applications of glass fiber increasing day by day in the form of engineered structures for sealing materials, rubber reinforcement, as well as filtration, protective clothing, packaging metal body parts and components [20]. Some ceramic fibers have found limited applications in engineered structures due its high cost and poor bending performance.…”

Section: Glass and Ceramicsmentioning

confidence: 99%

Introductory Chapter: Engineered Fabrics

Singh¹

2019

Engineered Fabrics

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The engineered fabrics can be comparable with composite materials also where two materials having different nature are combined together to extract the merits of both the materials in a single product, similarly two or more than two types of fibers, yarns, weaves or laying techniques are combined to engineer the targeted fabric [9]. In fact at this stage it is safe to say that any effort to define the engineered fabrics will prove insufficient because the development in this sector is in neonatal stage. 3. How does an engineered fabric differ from technical fabrics? Since decades of years technical textiles was widely used to explain the unconventional textiles which includes bunch of fibers, ropes, cabled yarns, woven and nonwoven fabrics, finished fabrics, stitched textiles, etc. The term technical textiles is used to encompass all textile products other than those intended for apparel, household and furnishing enduses, however, the term "engineered fabrics" is limited to various woven, nonwoven, knitted and braided fabrics manufactured by some unorthodox manufacturing techniques for special engineering applications. Various fabrics engineered for specific applications like medical, hygiene, sporting, transportation, construction, agricultural and many other purposes [10]. Engineered fabrics are used to provide the base for filters, machine clothing, conveyor belts, abrasive substrates, geofabrics, fabrics for acoustic and thermal insulation, etc. It is essential to mention that the composite materials made of polymeric membrane as reinforcing material with matrices, highly loose structured materials such as chopped strand mat, milled glass and pulped organic fibers cannot become the part of engineering fabrics [11].

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“…Spatial textile products frequently constitute preforms for reinforcements in the process of manufacturing composite structural elements for various applications [1,2]. For the production of knitted fabrics with a 3D structure, knitting machines of specific construction have to be used, e.g., warpknitting machines with several guide bars and needle combs ( Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1At first, the geometry of the feeding system during motion was analyzed assuming that the warp is inextensible and the articulately supported whip roller is weightless. Due to the length compensating function ∆L, the required limit value am of the rotation angle of the whip roller a must satisfy the dependence (2). While maintaining constant length of the warp L, equal to its initial value, the value am corresponds approximately to full slider shift S. (2) where e is the location of support axis of the whip roller with respect to the starting point of slider path measured in horizontal direction toward slider movement axis.…”

Section: Introductionmentioning

confidence: 99%

Impact of Whip Roller Parameters on Warp Dynamic Loads for 3D Fabrics Made on a Four-Comb Warp-Knitting Machine

Michalak

Kuchar

Mikołajczyk

2020

Autex Research Journal

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The most advantageous geometry of the warp feeding system was determined from the viewpoint of compensating temporary changes in the warp length during the technological cycle of a four-comb warp-knitting machine. Dynamic simulations of the feeding system were carried out for 3 different lengths of the shift of the slider with a guide bar – designating variants (series) of the cross-sectional sizes of the 3D knitted fabrics. The courses of instantaneous warp tensions during the operating cycle of the warp-knitting machine were presented. Limit dynamic loads of the warp were determined and presented as a function of natural frequency of the whip roller. Based on the criterion of the smallest dynamic loads of the warp, the optimum natural frequencies of the whip roller were determined. In the analyzed range of the whip roller parameters, they are 3–6 times greater than the operation frequency of the warp-knitting machine.

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Mechanical Properties of Glass Fiber Reinforced Polymers Members for Structural Applications

Cited by 62 publications

References 12 publications

Novel method of healing the fibre reinforced thermoplastic composite: A potential model for offshore applications

Novel method of healing the fibre reinforced thermoplastic composite: A potential model for offshore applications

Introductory Chapter: Engineered Fabrics

Impact of Whip Roller Parameters on Warp Dynamic Loads for 3D Fabrics Made on a Four-Comb Warp-Knitting Machine

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