A novel multi-scale modelling approach to predict the reduction of transverse strength due to porosity in composite materials

Fisher, Benjamin Franklin; Eaton, Mark Jonathan; Pullin, Rhys

doi:10.1016/j.compstruct.2023.116861

Cited by 5 publications

(1 citation statement)

References 37 publications

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“…Extensive research has been conducted on the impact of mesoscopic void and microscopic void defects on the mechanical properties of fiber-reinforced composites. Studying the effect of mesoscopic and microscopic defects on the mechanical properties of composites using experimental methods is challenging due to the difficulty in controlling the defects quantitatively [22]. As a result, most existing research has employed multiscale simulation methods to investigate this issue [23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Resin-Missing Defects on Tensile Behavior of Carbon Fiber/Epoxy Composites

Li,

Zhu

2024

Polymers

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This study explores the impact of resin-missing defects on the mechanical properties of composite laminates through experimental and finite element methods. Specimens with varying defect contents (5.3%, 8.0%, 10.7%, 13.3%, and 16.7%) were prepared via Vacuum Assistant Resin Infusion process. Experimental tests were conducted with the assistance of Digital Image Correlation measurements to illustrate the impact of resin-missing defects on failure characteristics. The experimental results indicate that the existence of resin-missing defects altered the stress distribution, increased the local stress, and reduced the tensile strength of the composite laminate. The DIC results indicate that the presence of defects weakens the matrix, leading to premature damage and deterioration. Numerical modeling with a progressive damage analysis method was developed to simulate the failure process and the influence of the resin-missing defects. The simulation results agree well with the experimental results, and the maximum error was 3.06%. The failure modes obtained from finite elements are consistent with the experimental and DIC results. Furthermore, a study was conducted on how the location of resin-missing defects affects the mechanical properties of composite laminates. The findings suggest that defects situated at the edges or on the surface of the material have a more significant impact on the tensile strength.

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Section: Introductionmentioning

confidence: 99%

Effect of Resin-Missing Defects on Tensile Behavior of Carbon Fiber/Epoxy Composites

Li,

Zhu

2024

Polymers

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Subtractive manufacturing of composite materials with robotic manipulators: a comprehensive review

Le,

Tran,

Ding

2024

Int J Adv Manuf Technol

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Robotic manipulators play an innovative role as a new method for high-precision, large-scale manufacturing of composite components. However, machining composite materials with these systems presents unique challenges. Unlike traditional monolithic materials, composites exhibit complex behaviour and inconsistent results during machining. Additionally, robotic manipulator as a machine tool often associates with stiffness and vibration issues which adds another layer of complexity to this approach. By employing a comprehensive analysis and a combination of quantitative and qualitative review methodology, this review paper aims to survey diverse properties of composite materials by different categories and their interaction with machining processes. Subsequently, a survey of manufacturing techniques for composite machining following with a review in various modeling practices to capture material machining behaviour under a systematic framework is presented. Thereafter, the reviewed literature examines the errors inherent in robotic systems, alongside ongoing research efforts in modeling to characterise robot behaviour and enhance its performance. Afterward, the paper explores the application of data-driven modelling methods, with a primary focus on digital twins, in enabling real-time monitoring and process optimisation. Finally, this paper aims to identify the gap in this field and suggests the potential routes for future research and application as well as their challenges.

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Multiscale modelling of dynamic progressive failure for CFRP laminates with voids subjected to low-velocity impact

Li,

Zhang

et al. 2025

Composites Part A: Applied Science and Manufacturing

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A novel multi-scale modelling approach to predict the reduction of transverse strength due to porosity in composite materials

Cited by 5 publications

References 37 publications

Effect of Resin-Missing Defects on Tensile Behavior of Carbon Fiber/Epoxy Composites

Effect of Resin-Missing Defects on Tensile Behavior of Carbon Fiber/Epoxy Composites

Subtractive manufacturing of composite materials with robotic manipulators: a comprehensive review

Multiscale modelling of dynamic progressive failure for CFRP laminates with voids subjected to low-velocity impact

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