Comparison of progressive damage between thermoset and thermoplastic CFRP composites under in-situ tensile loading

Rao, P. Sampath; Hardiman, M.; O’Dowd, Noel P.; Sebaey, Tamer A.

doi:10.1177/0021998320972471

Cited by 7 publications

(5 citation statements)

References 13 publications

(18 reference statements)

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“…Fracture is a process of microcrack generation and propagation; the first microcrack is always generated at the debonding point. Similar opinions have been introduced in other reinforced composites [17,18,20]. In CFRP composites, the first debonding point typically depends on the lower value of the interfacial adhesion between fiber and resin, as well as the lowest bearing point of resin matrix [16,21].…”

Section: Fracture Mechanism Of Different Configurationsmentioning

confidence: 71%

Dynamic Tensile Properties of CFRP Manufactured by PCM and WCM: Effect of Strain Rate and Configurations

Yang

2021

Crystals

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Carbon fiber-reinforced plastic (CFRP) is a promising material to achieve lightweight automotive components. The effects of the strain rate and configurations of CFRP on dynamic tensile properties have not yet been fully explored; thus, its lightweight benefits cannot be maximized. In this paper, the dynamic tensile properties of CFRPs, tested using two different processes with two different resins and four different configurations, were studied with a strain rate from 0.001 to 500 s−1. The tensile strength, modulus, failure strain, and fracture mechanism were analyzed. It was found that the dynamic performance enhances the strength and modulus, whereas it decreases the failure strain. The two processes demonstrated the same level of tensile strength but via different fracture mechanisms. Fiber orientation also significantly affects the fracture mode of CFRP. Resins and configurations both have an influence on strain rate sensitivity. An analytic model was proposed to examine the strain rate sensitivity of CFRPs with different processes and configurations. The proposed model agreed well with the experimental data, and it can be used in simulations to maximize the lightweight properties of CFRP.

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Section: Fracture Mechanism Of Different Configurationsmentioning

confidence: 71%

Dynamic Tensile Properties of CFRP Manufactured by PCM and WCM: Effect of Strain Rate and Configurations

Yang

2021

Crystals

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“…In an earlier study, Rao et al [ 37 ] studied the mechanical properties and damage mechanisms of the five conditions that were adopted in the current study through in-situ tensile loading. For the AS4/PA12 without autoclave treatment, the failure load and stress were 0.98 kN and 288 MPa, respectively.…”

Section: Materials Manufacturing and Measurementsmentioning

confidence: 99%

Fibre Alignment and Void Assessment in Thermoplastic Carbon Fibre Reinforced Polymers Manufactured by Automated Tape Placement

2021

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Automated Tape Placement (ATP) technology is one of the processes that is used for the production of the thermoplastic composite materials. The ATP process is complex, requiring multiple melting/crystallization cycles. In the current paper, laser-assisted ATP was used to manufacture two thermoplastic composites (IM7/PEEK and AS4/PA12). Those specimens were compared to specimens that were made of thermoset polymeric composites (IM7/8552) manufactured while using a standard autoclave cycle. In order assess the quality, void content, fibre distribution, and fibre misalignment were measured. After manufacturing, specimens from the three materials were assessed using optical microscopy and computed tomography (CT) scans. The results showed that, as compared to the thermoset composites, thermoplastics that are manufactured by the ATP have a higher amount of voids. On the other hand, manufacturing using the ATP showed an improvement in both the fibre distribution inside the matrix and the fibre misalignment.

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“…Whereas composite itself has several advantage and disadvantages and a number of studies has been reported in this area. Some studies investigated the significance of composite materials by considering the different shapes which has been applied the varies loading conditions [ 23 , 24 ]. Also, numerically investigated the energy effect on the impact resistance of an aircraft polymer composite [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Structural Damage Repair with Single and Double-Sided Composite Patches through the Finite Element Analysis and Taguchi Method

et al. 2023

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Over the last four decades, numerous studies have been conducted on the use of bonded composite repairs for aircraft structures. These studies have explored the repair of damaged plates through experimental, numerical, and analytical methods and have found that bonded composite repairs are effective in controlling crack damage propagation in thin plates. The use of double-sided composite repairs has been found to improve repair performance within certain limits. This study focuses on these limits and optimizes double-sided composite repairs by varying adhesive bond and composite patch parameters. The optimization process begins with a finite element analysis to determine the stress intensity factor (SIF) for various variables and levels, followed by the application of the Taguchi method to find the optimal combination of parameters for maximizing the normalized SIF. In conclusion, we successfully determined the stress intensity factor (SIF) for various variations and normalized it for optimization. An optimization study was then performed using the Taguchi design and the results were analyzed. Our findings demonstrate the repair performance of bonded composite patches using a cost-effective and energy-efficient approach.

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Comparison of progressive damage between thermoset and thermoplastic CFRP composites under in-situ tensile loading

Cited by 7 publications

References 13 publications

Dynamic Tensile Properties of CFRP Manufactured by PCM and WCM: Effect of Strain Rate and Configurations

Dynamic Tensile Properties of CFRP Manufactured by PCM and WCM: Effect of Strain Rate and Configurations

Fibre Alignment and Void Assessment in Thermoplastic Carbon Fibre Reinforced Polymers Manufactured by Automated Tape Placement

Optimization of Structural Damage Repair with Single and Double-Sided Composite Patches through the Finite Element Analysis and Taguchi Method

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