Fractographic analysis of compression failures in unidirectional carbon fiber reinforced plastic composites

Kumar, M Suresh; Raghavendra, K; Ambresh, M; Ramachandra, HV; Venkataswamy, MA; Ranganath, V R

doi:10.1177/1464420714525542

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…In microstructural studies, SEM images are utilized to visualize the random orientation of fibers, which leads to anisotropic behavior, increasing voids/declining interfacial bonding as laminate thickness grows, and anisotropic behavior. Kumar et al 78 described fractographic features in tensile‐failed aerospace composites. In this study, tension testing was performed on composite specimens made of unidirectional glass and unidirectional carbon fiber‐reinforced plastic.…”

Section: Fractography Of Frp Laminate Compositesmentioning

confidence: 99%

“…In compressive failures of fiber‐reinforced polymer composites, three main damage mechanisms were identified: microcracking, crack bridging, and fiber microbuckling resulting in kink‐band formation. Kumar et al 78 investigated three types of fracture modes on CFRP samples: in‐plane shear, complex fracture, and through‐thickness shear fractures under compression load test. A detailed fractographic examination revealed that microbuckling of individual fibers caused in‐plane and through‐thickness shear fractures; complicated failure is caused by longitudinal splitting followed by microbuckling.…”

Section: Fractography Of Frp Laminate Compositesmentioning

confidence: 99%

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Fractographic analysis of fiber‐reinforced polymer laminate composites for marine applications: A comprehensive review

Ojha,

Bisaria,

Mohanty

et al. 2024

Polymer Composites

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In the past decade, polymer‐based glass fiber‐reinforced laminate composites have gained significant popularity in various mass transit applications, including marine, aircraft, and automotive industries. However, it is crucial to consider the degradation and potential failure of these materials, especially in mass transit networks. To address this concern, fractographic analysis has emerged as a valuable approach for investigating fracture surfaces, extracting vital information, and facilitating the development of new materials. Furthermore, it sheds light on the underlying physical mechanisms that contribute to composite failure. This paper primarily focuses on examining flaws, failure modes, and performing fractography analysis on fiber‐reinforced polymer (FRP) laminate composites subjected to various loading conditions such as tension, compression, flexure, impact, shear, and fracture. Fractography, as an indispensable method, plays a pivotal role in the comprehensive development of composite structures and has become a reliable tool for composite engineers. The outcomes of this study are expected to serve as a foundation for identifying areas that require further investigation in terms of fracture analysis and failure modes specific to FRP composite materials, particularly those used in marine applications.Highlights Introduction to FRP laminate composites in marine structures. Concise analysis of failure modes in FRP laminate composites. SEM fractography review of FRP laminate composites under varied loading conditions. Comprehensive study on tensile, flexural, impact, compression, shear, and fracture toughness failure modes. Summarization of identified defects in FRP composites.

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Section: Fractography Of Frp Laminate Compositesmentioning

confidence: 99%

Section: Fractography Of Frp Laminate Compositesmentioning

confidence: 99%

Fractographic analysis of fiber‐reinforced polymer laminate composites for marine applications: A comprehensive review

Ojha,

Bisaria,

Mohanty

et al. 2024

Polymer Composites

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show abstract

“…The deformation and fracture of unidirectional FRP composites under compressive load are affected by factors such as the fiber modulus, initial arrangement of fibers, internal defects, and fiber-matrix interface, resulting in changes in the compressive behavior and failure mechanism. [15][16][17][18][19][20] In general, the axial compressive failure modes of unidirectional FRP composites are debonding, resin fracture, fiber buckling instability, kinking, and fiber crushing. In the case of a good interface property and fewer defects, the fiber in the composite first reaches the critical instability state, followed by fiber buckling or microbuckling.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on axial compressive properties and failure mechanism of unidirectional covered carbon fiber-reinforced polymer composites

Ruan

Xia

Wang

et al. 2022

Polymers and Polymer Composites

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Axial compression performance is one of the main factors considered in the structural design of fiber-reinforced composites. However, the properties of the fibers in such composites are poor because of their orientation structures. Here, filament fibers were covered with reinforced fiber bundles to improve the axial compressive properties of the composites, and the effects of fiber covering on the axial compressive properties and failure modes of the composites were studied. The experimental results show that the covering can shorten the buckling wavelength of carbon fiber under compressive load, which can effectively improve the axial compression ability of the composite. A lower modulus of the covered filament reduced the potential to improve the compressive strength of the samples, and damage occurred primarily by splitting and shearing. With an increase in the covering density, the compressive strength and modulus gradually increased, and the damage mode changed from flexural instability to kinking damage.

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Static and dynamic mechanical analyses of E-glass–polyester composite used in mass transit system

Ojha

Bisaria

Mohanty

et al. 2023

Emerging Materials Research

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Composite materials have distinct properties such as a high strength-to-weight ratio, high corrosion resistance, a high modulus-to-weight ratio, and wear resistance. The potential, strong mechanical properties and lower cost properties of E-glass fibre motivated us for this work. Tensile, flexural, and Izod impact tests were used in the current study to conduct a static analysis of E-glass reinforced isophthalic polyester composite and E-glass reinforced general purpose (GP) or orthophthalic polyester composite. Thermal-mechanical behaviour was investigated using thermogravimetric analysis and dynamic mechanical analysis tests. Furthermore, the surface morphology of the tested composites was examined using a scanning electron microscope. When compared to E-glass reinforced GP polyester composite, E-glass/isophthalic polyester composite demonstrated superior flexural properties and thermal stability. However, the tensile and impact properties of E-glass/GP polyester composite were found to be higher than those of E-glass/isophthalic polyester composite. SEM images show fibre pull-out, matrix cracking, and fibre breakage, among other things. The loss modulus and damping values for E-glass reinforced GP polyester composite were found to be greater than those for E-glass reinforced isophthalic polyester composite. The current composite can be used in marine applications, particularly the hull: frame or body of the boat.

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Fractographic analysis of compression failures in unidirectional carbon fiber reinforced plastic composites

Cited by 3 publications

References 8 publications

Fractographic analysis of fiber‐reinforced polymer laminate composites for marine applications: A comprehensive review

Fractographic analysis of fiber‐reinforced polymer laminate composites for marine applications: A comprehensive review

Experimental study on axial compressive properties and failure mechanism of unidirectional covered carbon fiber-reinforced polymer composites

Static and dynamic mechanical analyses of E-glass–polyester composite used in mass transit system

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