Numerical modelling of woven fabric composite materials

Naik, N.K.

doi:10.1007/978-94-011-0603-0_13

Cited by 5 publications

(2 citation statements)

References 31 publications

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“…Balanced woven fabrics have the same number of yarns per cm, yarn count and spacing in both warp and weft directions and, as a result, give uniform tensile properties in both longitudinal and transverse directions. Woven fabrics offer several advantages such as impact resistance, damage tolerance, toughness and the ease of manufacturing 38,39,[41][42][43] . Flax fiber has lower density than glass fiber and as a result it affords to a comparable specific strength 19 .…”

Section: Bio-based Fibersmentioning

confidence: 99%

Environment Friendly Composite Materials: Biocomposites and Green Composites

Mitra

2014

DSJ

166

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IntroductIonDevelopment of advanced polymer composite materials having superior mechanical properties opened up new horizons in the engineering field. Advantages such as corrosion resistance, electrical insulation, easy processability at relatively less energy requirement in tooling and assembly costs, higher stiffness and strength, fatigue resistance and lower weight than metals have made polymer composite widely acceptable in structural applications. The so-called advanced composites have replaced metals because of their excellent mechanical properties and low density giving them high specific strength and stiffness 1 . Such weight savings are highly desirable for applications in aerospace to transportation to reduce weight and associated fuel consumption. Another distinct advantage is their ability to be engineered to obtain required properties in different directions by appropriate fiber placing in different layers of the laminated structure.Composite properties depend on the properties of the constituent materials i.e. the fibers and resins used. The strength and stiffness of the composites are directly a function of the reinforcing fiber properties which carry most of the load and their volume content. The resin helps to maintain the relative position of the fibers within the composite and, more importantly, transfers the load from the bottom fibers to the intact fibers. As a result, fiber/resin interfacial properties are also important and have a significant effect on composite properties including toughness and transverse fracture stress. To fabricate high strength composites, all three factors namely fiber properties, resin properties as well as fiber/resin interface characteristics are critical.Currently most of the fibers and resins are derived from petroleum feed stocks and do not degrade for several decades under normal environmental conditions 2 . Composites made from thermosetting resins cannot be reprocessed or recycled, however, a small fraction of these thermosetting composites are crushed into powder used as filler or incinerated to obtain energy in the form of heat, most of them end up in land-fills at the end of their life. In anaerobic conditions, such as those in land -fills, the petroleum based composites may not degrade making that land unavailable for any other use. On the other hand, incineration produces toxic gases and requires expensive scrubbers. Both incineration and dumping in land-fills are environmentally undesirable as well as expensive. In the future, these methods of disposing of composites are expected to get even more expensive as the pollution laws all over the world get stricter and the number of land -fills decline. In addition, at the present rate of consumption, the world petroleum resources are estimated to last for the next 50 years or so 2 . Thus, there is a great interest generated in developing green composites using fully sustainable, biodegradable, environment friendly and annually renewable fibers and resins, particularly those derived from plants 3 . A variet...

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Section: Bio-based Fibersmentioning

confidence: 99%

Environment Friendly Composite Materials: Biocomposites and Green Composites

Mitra

2014

DSJ

166

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“…Despite their importance, however, the out-of-plane properties of PWCs have been significantly less studied, likely because of the complexity of their three-dimensional architecture. 16 Several analytical (laminated theory) 4,11,12,17–20 and numerical 21–30 research works have been devoted to study the elastic response of PWC laminates. Experimental research on PWCs seems to be more limited, and published research has investigated the effect of the type of woven fabric, thickness of the laminate, undulation, gaps and continuity of the yarns, the geometry of the weave, the stacking sequence, the relative position between plies and off-axial loading.…”

Section: Introductionmentioning

confidence: 99%

Measurement of in-plane and out-of-plane elastic properties of woven fabric composites using digital image correlation

López-Santos

May‐Pat

Orozco

et al. 2020

Journal of Composite Materials

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The digital image correlation (DIC) technique is employed to measure the strain fields and the five independent elastic material constants of a glass/vinyl ester plain weave laminated composite. Transverse (through-thickness) tensile and Iosipescu shear properties were measured using thick (∼19 mm) laminates, and the strain fields were compared against those predicted by a homogenized linear elastic finite element analysis. DIC reveals that the strain fields of the laminates may present heterogeneous zones, which are attributed to the heterogeneous nature of the woven fabric architecture. Homogenization of the DIC strain fields to produce two-dimensional stress-strain plots yields average strains and elastic properties of the woven composite which can be similar to those measured by conventional (localized) strain gages. Important differences were found for the transverse tensile and Iosipescu shear tests, where differences of 26.4%, 28.6% and 11.9% were obtained for the measured transverse elastic modulus ( Ez), in-plane shear modulus ( Gxy) and transverse shear modulus ( Gxz), respectively.

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Woven composite material design by orthotropic compliance averaging method using mathematica

Bejan¹,

Poterasu²

1999

Computer Methods in Applied Mechanics and Engineering

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Numerical modelling of woven fabric composite materials

Cited by 5 publications

References 31 publications

Environment Friendly Composite Materials: Biocomposites and Green Composites

Environment Friendly Composite Materials: Biocomposites and Green Composites

Measurement of in-plane and out-of-plane elastic properties of woven fabric composites using digital image correlation

Woven composite material design by orthotropic compliance averaging method using mathematica

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