Characterization of defects in carbon fiber-reinforced plastics by inverse heat conduction analysis using transfer matrix between layers

Muramatsu, Masaaki; Nakasumi, Shogo; Harada, Yoshihisa

doi:10.1080/09243046.2016.1145892

Cited by 12 publications

(7 citation statements)

References 27 publications

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“…Especially in the deep‐sea production system, CFRP is regarded as the potential material to structure the oil heating pipeline considering its good thermal conductivity. Therefore, it has been raising as a key issue to study the thermo‐physical properties of CFRP, 3–5 especially the heat conduction mechanism under the influence of skin effect, which is beneficial to the oil heating composite pipeline design and manufacture.…”

Section: Introductionmentioning

confidence: 99%

Study on the effect of carbon fiber ply angle on thermal response of CFRP laminate based on the thermal resistance network model

Bao,

Ma,

Yang

et al. 2023

Polymer Composites

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Carbon fiber reinforced polymer (CFRP) exhibits different heat transfer phenomena along the fiber direction and the transverse direction during the heat transfer process due to its anisotropic thermo‐physical properties, which makes it difficult to quantitatively analyze the overall thermal performance of CFRP with different ply angles. A thermal resistance network model of composite material considering fiber ply angle and heat transfer direction was developed based on the series–parallel resistance computing method, and it was applied to describe the test results measured by the thermal response tests of unidirectional carbon fiber laminates. Thermal resistance Rx along the heat transfer direction and Ry transverse to the heat transfer direction calculated by the proposed model, which are related with the thermal response of the specimen, can be utilized to reflect the temperature values and temperature distribution maps. It was found that as the fiber ply angle θ increases from 0° to 45°, thermal resistance in the x‐axis direction increases from about 0.13 K/W to 2.56 K/W, while thermal resistance in the y‐axis direction decreases about 48.7%. As a result, major axis of quasi‐ellipse temperature profile changes by about +45° relative to the x‐axis.Highlights A CFRP thermal resistance network model considering ply angle was proposed. The series–parallel thermal resistance method is used to calculate Rx and Ry. The ply angle from 0° to 45°, Rx increases several times and Ry decreases by half. Major axis of elliptic temperature curve changes by +45° relative to the x‐axis.

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Section: Introductionmentioning

confidence: 99%

Study on the effect of carbon fiber ply angle on thermal response of CFRP laminate based on the thermal resistance network model

Bao,

Ma,

Yang

et al. 2023

Polymer Composites

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show abstract

“…Therefore, several types of defects can be found, such as porosity (void content), fibre waviness (misalignment), and poor distribution of fibres in the matrix, which results in resin-rich areas [ 8 , 9 ]. The effect of these defects on the mechanical properties of the composite parts is well documented in the literature [ 10 , 11 , 12 ]. During the manufacturing of FRP, if both pressure and application time are not optimized, voids could arise in the laminate [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…The effect of these defects on the mechanical properties of the composite parts is well documented in the literature [10][11][12]. During the manufacturing of FRP, if both pressure and application time are not optimized, voids could arise in the laminate [13].…”

Section: Introductionmentioning

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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“…Muramatsu et al. 10 proposed an inverse analysis of the defects in carbon fiber-reinforced plastics (CFRPs) by using the transfer matrix approach. Ashory et al.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the quasi-static and fatigue mechanical behavior of plain weave laminates of carbon/polymer composites were experimentally investigated by Ji et al 8 In order to calculate the electric current of a thin cross-ply CFRP, Todoroki 9 improved orthotropic electric potential function analysis approach. Muramatsu et al 10 proposed an inverse analysis of the defects in carbon fiber-reinforced plastics (CFRPs) by using the transfer matrix approach. Ashory et al 11 investigated the damage detection method via wavelet transform in their first study.…”

Section: Introductionmentioning

confidence: 99%

Identification of mechanical and damage parameters of composite laminates based on a CPAM method

Masoumi

Ghasemi-Ghalebahman

Kokabi

2018

Journal of Reinforced Plastics and Composites

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A new method combining experimental and numerical data is proposed to simultaneously determine the mechanical properties and damage parameters in multilayered composite plates. Studied parameters are mechanical properties of each layer, width and length of delamination zone, location of damage’s center, and interface location of the damage. In this method, the PSO optimization procedure based on a CPAM algorithm uses vibration test data along with their corresponding numerical solution. Vibration data are the plates’ natural frequencies and mode shapes obtained in the modal laboratory. In order to efficiently investigate the studied parameters, the numerical solution is investigated by a commercial finite element package. The error function constitutes two parts, one part is included by the sum of the squared differences between experimental and numerical natural frequencies and the other is based on the mode shapes data. The mode shapes’ curvatures are also utilized to achieve high sensitivity to small faults. Moreover, by applying a Gaussian disorder model to the vibrational data, the sensitivity of the method is evaluated in the presence of unwanted noises. The results confirm the robustness of the proposed study for identifying both mechanical constants and damage parameters in composite plates.

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Characterization of defects in carbon fiber-reinforced plastics by inverse heat conduction analysis using transfer matrix between layers

Cited by 12 publications

References 27 publications

Study on the effect of carbon fiber ply angle on thermal response of CFRP laminate based on the thermal resistance network model

Study on the effect of carbon fiber ply angle on thermal response of CFRP laminate based on the thermal resistance network model

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

Identification of mechanical and damage parameters of composite laminates based on a CPAM method

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