Fibre-dominated compressive failure in polymer matrix composites

Pinho, S.T.; Gutkin, Renaud; Pimenta, Soraia; Carvalho, N.V. De; Robinson, P.

doi:10.1533/9780857095329.1.183

Cited by 3 publications

(1 citation statement)

References 64 publications

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“…For example, the study performed by Odom and Adams [4] mentions the influence of the lateral stability (by changing the tab geometry of the specimen) in the occurrence of the failure mode. Currently, it is possible to use the knowledge about the failure modes as a way to improve the compressive performance of fiber-reinforced composites, as indicated by Pinho et al [6].…”

Section: Introductionmentioning

confidence: 99%

Compression Failure Modes of Carbon Fiber Fabric Scraps/Epoxy Laminates

Opelt

Souza

Marlet

et al. 2016

AMR

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The composite prepreg waste is still an environmental challenge. In the last decade, several researchers have been studying the recycling and reuse processes of composite components, mainly to use in secondary (non-structural) components. In this paper, uncured aerospace grade prepreg scraps resulted from the production waste were used to manufacture laminates. The carbon reinforcement of the prepreg presented plain weave style fabric. To manufacture the laminates the hand-lay up process was used, randomly positioning the scraps and without respecting the preferred directions of the warp and weft. Therefore, the resulting laminate is multidirectional (in the plane) and orthotropic. The cure was performed in autoclave at the maximum temperature of (180 ± 1)°C and pressure of 100 psi. This laminate was tested in compression according to standard SACMA SRM 1R-94. The results show an average compression resistance equivalent to that of laminates produced with continuous layers, although with a higher dispersion. In order to understand this variation, the fracture surfaces of the laminates were analyzed by scanning electron microscopy (SEM) in order to identify the failure modes. The specimens present shear and interlaminar failure modes, in addition to a mixed mode of failure (a transition between the shear and interlaminar failures). For the same specimen, the analysis of the internal arrangement of the fibers shows that changes in failure modes occur in regions where the carbon fabric is not continuous, i.e. there are joinings of scraps. It was also observed that none of the compression tests resulted in catastrophic failure of the specimens, possibly due to a greater resistance to fracture growth in the presence of mixed failure mode.

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Section: Introductionmentioning

confidence: 99%

Compression Failure Modes of Carbon Fiber Fabric Scraps/Epoxy Laminates

Opelt

Souza

Marlet

et al. 2016

AMR

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Numerical modeling of fiber reinforced polymer textile composites for characterizing the mechanical behavior – a review

Kaushik

Sharma

Priyanka

et al. 2022

Materialwissenschaft Werkst

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Polymeric composites are used worldwide due to their enhanced applications in various sectors such as automotive, defense, aerospace, marine, and many others. Its lightweight and high‐strength applications make it convenient to use in high‐security fields such as defense and aerospace. Thus, it is essential to characterize composite materials for product development. Numerical simulation of composites has advantages over experimental characterization. The paper presents the mechanical behavior of polymer textile composites, employing geometrical modeling and a numerical simulation approach, under several loading conditions such as tension, compression, flexural, and impact loading. Failure mechanisms are also discussed with different failure modes and damage criterions. This review paper is limited to high‐strength fibers, such as carbon, Kevlar, and Glass fibers in unidirectional and woven formation. Various test specimens used in mechanical characterizations are presented with significant research summaries. Classification charts are also provided for a better understanding of the numerical simulation approach for characterizing the mechanical behavior.

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