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International Journal of AI for
            Materials and Design                                                   AI applications in composite materials



                                                               breakthroughs in DNN research and applications. Because
                                                               of their deep architecture, DNNs excel at capturing intricate
                                                               patterns and relationships, making them particularly
                                                               effective in handling nonlinear data and solving complex
                                                               problems. When trained with sufficient, high-quality data,
                                                               highly accurate predictions can be made for the given
                                                               inputs, making it a powerful tool for data-driven analysis
                                                               in various domains.
                                                                 With the advancement of DNN technology, its
                                                               applications in the field of composite materials have been
                                                               steadily expanding. Traditional analytical methods often
                                                               rely on various assumptions and simplifications that require
                                                               extensive computational resources and time. However, by
                                                               learning from large-scale datasets, DNNs can efficiently
                                                               and accurately predict the behavior and properties of
                                                               composite materials, overcoming the limitations of
                                                               traditional methods in terms of speed and precision.

                                                                 DNNs have been effectively utilized to predict
                                                               the nonlinear responses and complex characteristics
            Figure 2. Machine learning applications in composite materials research:   of composite structures, such as composite springs,
            prediction, generation, and automation
            Abbreviation: AI: Artificial intelligence.         composite tubes, and bistable composite structures,
                                                               which are difficult to analyze analytically. 29,30,33  Zhang
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            2. Predictive models for composite                 et al.  applied a DNN-based surrogate model to analyze
            materials                                          the behavior of deployable bistable composite structures
                                                               with C-cross sections, using finite element analysis (FEA)
            Predictive ML models are designed to estimate output   data for training and subsequently performing structural
            properties or behaviors based on the given input data by   optimization. Similarly, as shown in Figure 3B, Hong et al.
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            identifying complex patterns and relationships. In the   utilized DNNs to predict ground reaction forces using self-
            field of composite materials, predictive models play a   sensed capacitance data from composite ankle springs,
            crucial role as  traditional  experimental  and  numerical   enabling  the  extraction  of  running  parameters  for  exo-
            methods for property prediction can be time-consuming   robot applications. Wang et al.  developed a DNN-based
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            and computationally expensive, especially when dealing   surrogate model to predict the mechanical properties of
            with the anisotropic and nonlinear nature of composites.   braided-textile reinforced tubular structures.  Figure  3C
            By leveraging ML models trained on extensive datasets,   shows  the  performance  and  error  of  the  predicted
            predictive models enable rapid and reliable predictions,   results (peak force, mean crushing force, displacement
            significantly  enhancing  efficiency  in  material  design,   corresponding to peak force, and effective compression
            performance evaluation, and failure analysis. This section   stroke). In addition, as shown in Figure 3D, a DNN was
            will explore different ML models and techniques used for   utilized to predict the transverse mechanical response of
            prediction in composite materials research.        unidirectional fiber-reinforced composites, incorporating
                                                               the effects of defects, such as matrix voids and fiber-matrix
            2.1. Deep neural networks (DNNs)
                                                               debonding.  Their approach used an experimentally
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            An artificial neural network (ANN)  is  a type of ML   validated discrete element method model to generate
            technology inspired by the human nervous system. It   training  data  of  crack  initiation and  propagation  at  the
            serves as a mathematical model for learning information   particle-level in representative volume elements (RVEs)
            from the given data and recognizing patterns. 24,25  A DNN,   of the composite. The trained DNN predicted the initial
            as shown in  Figure  3A, is a specialized form of ANN   crack location and the corresponding stress at the onset
            that incorporates multiple hidden layers, allowing for   of cracking with accuracies of 82% and 94%, respectively.
            the extraction of complex features from data. 26-28  While   DNNs  were  integrated with the Abaqus  FEA  code  by
            the  concept  of  ANNs  has been  around for  decades,   Tao et al.  to learn composite constitutive laws, ensuring
                                                                      34
            the advancement of GPU technology has enabled the   physical consistency and enabling accurate, data-driven
            practical implementation of DNNs, leading to significant   structural predictions. Furthermore, DNNs were used for


            Volume 2 Issue 3 (2025)                         3                         doi: 10.36922/IJAMD025210016
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