Polypropylene/glass fibre 3D-textile reinforced composites for automotive applications

Hufenbach, W.; Böhm, Robert; Thieme, Mike; Winkler, Anja; Mäder, Edith; Rausch, Julius; Schade, Mirko

doi:10.1016/j.matdes.2010.08.049

Cited by 165 publications

(79 citation statements)

References 27 publications

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“…However, they are limited by linear elasticity and often exhibit brittle, sudden, and catastrophic failure, which occurs without warning. Thermoplastic composites reinforced with continuous fiber are receiving much attention and growing interest in the industry for lightweight applications owing to many attractive advantages in comparison to composites based on thermoset matrices; their advantages are mainly based on the inherent properties of thermoplastic polymers used, such as fracture toughness and damage tolerance (higher strain to failure), recyclability, clean processability (shaping prior to consolidation and the ability to be reshaped), faster manufacturing and long shelf life (Gonzalez-Chi et al, 2004;Hufenbach et al, 2011;Hassan et al, 2013;Fuller and Wisnom, 2015a;Shan-Shan et al, 2018). On the other hand, the joint between plies in thermoplastic laminates is formed by fusion, consequently there is no interphase, thus failure by delamination is not possible (common failure mechanism of thermoset laminates).…”

Section: Introductionmentioning

confidence: 99%

Dimensional Scaling and Failure Pattern of the Tensile Properties of Angle-Ply Thermoplastic Composites of Twaron Fiber/Polypropylene

2018

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Thermoplastic multilayer composites with different fiber orientations were prepared with polypropylene and aramid fibers as reinforcing material. The prepregs were prepared in a continuous impregnation system using the dry powder method in a fluidized bed. The specimens were laminated by compression molding, tensile tested, and their fracture area was analyzed by microscopy. The mechanical performance of the laminates was influenced by the fiber orientation at the different layers. The fibers at 0 • conferred high stiffness to the composite, limiting the maximum deformation and promoting failure. The laminates with 0 • layers showed a fragile and sudden fracture oriented at 90 • to the aplied load, even with low fiber content. The plies oriented at ± 45 • balanced the stress and contributed to higher levels of deformation during the test due to fiber rotation toward the loading direction, also, no post-yield stiffening was found as in thermoset composites due to the ductile nature of the thermoplastic matrix; these layers limited the crack propagation in the transverse direction, canceling the in-plane shear stress. The fibers at 90 • acted as filler due to poor interface and did not contribute to the improvement of the composite mechanical performance. The evidence shows no delamination in the materials due to the tenacious nature of the thermoplastic matrix, neither saw-toothed or plateau region was found in the stress-strain curves in contrast to thermoset laminates.

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Section: Introductionmentioning

confidence: 99%

Dimensional Scaling and Failure Pattern of the Tensile Properties of Angle-Ply Thermoplastic Composites of Twaron Fiber/Polypropylene

2018

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“…The most attractive feature of this composites is the fabrics perform consist of unidirectional plies with no crimp arranged in a number of different orientations relative to the fabric production direction; the individual plies are kept together by stitching yarns. Therefore, a revival of interest in 3D MWK composites has been observed in the aerospace, marine, automobile wind turbine blades and construction industries [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Mechanical response and failure of 3D MWK carbon/epoxy composites at cryogenic temperature

Duan

Jiang

et al. 2015

Fibers Polym

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Static tensile and bending experiments are conducted on 3D MWK carbon/epoxy composites with two types of fiber architecture at room and cryogenic temperature (low as -196 o C). Macro-Fracture morphology and SEM micrographs are examined to understand the deformation and failure mechanism. The results show that tensile stress vs. strain curves have linear elastic feature up to failure; while the load-deflection curves for composites with large fiber orientation angle have pronounced nonlinear and failure in steps. Meanwhile, tensile and bending properties at liquid nitrogen temperature have been improved significantly. Moreover, the properties can be affected greatly by the fiber architecture and these decrease with increasing fiber orientation angle at room and cryogenic temperatures. The results also show the damage and failure patterns of composites vary with the fiber architecture and temperature. The main failure for material A is 0 o fibers fracture and matrix cracking. The failure mechanism for material B is the delamination, 90 o /+45 o /-45 o fiber/matrix interface debonding and fibers tearing, as well as 0 o fibers' breakage. At cryogenic temperature, the matrix is solidified and the interfacial adhesion between fibers and matrix is enhanced significantly. However, the brittle failure becomes more obvious, more microcracks propagate and interpenetrate.

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“…In particular, 3D multi-axial warp knitted (MWK) approach is well suited to the rapid manufacture of components to overcome damage tolerance problem and weak strength in the thickness direction. In recent years, the use of 3D MWK composites is growing rapidly in aircraft, automobiles, marines, wind turbine blades and other complex structural components [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the bending properties and failure mechanism of 3D MWK composites at elevated temperatures

Jiang

et al. 2015

Fibers Polym

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This paper reports the effect of temperature on the bending properties and failure mechanism of 3D MWK (Multiaxial warp knitted) composites. Three-point bending experiments on composites with three fiber architectures were performed at four different temperatures. Then the effect of temperature on the load/deflection curves, bending strength and stiffness were analyzed. Macroscopic fracture morphology and SEM micrographs were also examined to understand the deformation and failure mechanism. The results show that the temperature has great impact on the bending properties of 3D MWK composites and the performance decreases significantly with the increase of the temperature. Meanwhile, the bending properties can be affected greatly by the fiber architecture and these decrease significantly with the increase of fiber orientation angle at room and elevated temperatures. Moreover, the damage and failure patterns of composites vary with the test temperature and fiber architecture. At room temperature, the composite exhibits brittle fracture feature and damages in the breakage and tearing of fibers. But at the higher temperature, the composite becomes more softened, cracked and plastic. It damages in fiber layer delaminating, matrix cracking and fiber/matrix interface debonding.

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Polypropylene/glass fibre 3D-textile reinforced composites for automotive applications

Cited by 165 publications

References 27 publications

Dimensional Scaling and Failure Pattern of the Tensile Properties of Angle-Ply Thermoplastic Composites of Twaron Fiber/Polypropylene

Dimensional Scaling and Failure Pattern of the Tensile Properties of Angle-Ply Thermoplastic Composites of Twaron Fiber/Polypropylene

Mechanical response and failure of 3D MWK carbon/epoxy composites at cryogenic temperature

Experimental study on the bending properties and failure mechanism of 3D MWK composites at elevated temperatures

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