Nature-Inspired Helicoidal Composites Review Maps AI-Driven Path to Impact Resistance

Helicoidal structures, the twisted plywood-like architectures found in plant cell walls, lamellar bone, and the shells of mantis shrimp and beetles, have become a blueprint for impact-resistant engineered materials. A new narrative review in Advanced Composites and Hybrid Materials brings together a decade of research on nature-inspired helicoidal hybrid composites, covering their biological inspiration, manufacturing routes, artificial intelligence-enabled design, and mechanical characterization.

A central theme of the review is manufacturing quality. Traditional hand-layup methods for producing layered helicoidal composites can introduce defects such as gaps, overlaps, and wrinkles. Automated Fiber Placement (AFP) offers a way to mitigate these flaws, but its outcome depends on careful optimization of process parameters including pressure, temperature, and layup speed. Because experimental optimization is costly and time-consuming, the authors highlight AI-based design as a more efficient alternative.

The review surveys several advanced manufacturing routes for these materials. For hybrid long-fiber layered composites, it examines AFP combined with autoclave or hot press processing. For nanocomposites built on multi-walled carbon nanotubes (MWCNTs), it discusses the digital micromirror device (DMD) approach. Together, these routes span the range from structural laminates to functional nanocomposite systems.

Computational tools feature prominently in the review’s treatment of defect control. Machine learning and deep learning, coupled with finite element modeling, are presented as means of minimizing process-induced defects by optimizing AFP and 3D printing parameters. On the inspection side, the review compares conventional AFP inspection techniques such as laser profilometry and thermography with a defect-detection algorithm based on PointNet++, a convolutional neural network tailored for 3D point cloud segmentation. The authors describe the PointNet++-based approach as a cost-effective, user-friendly alternative to the established methods.

The mechanical evidence reviewed points to a consistent advantage for low-angle helicoidal architectures. Helicoidal composites with low inter-ply angles of up to 20 degrees consistently outperform conventional lay-ups under both quasi-static and impact loading.

The review also examines self-healing strategies for toughening these materials. Incorporating nylon 6 powder microparticles into carbon/epoxy and glass/epoxy helicoidal composites subjected to impact loading significantly improves their toughness through self-healing, compared with virgin helicoidal composites that lack the healing phase.

Detailed damage behavior differs between the two matrix systems. Carbon/epoxy helicoidal composites with low inter-ply angles of up to 9 degrees are prone to extensive matrix cracking and minor fiber damage. In these composites, self-healing helps minimize matrix cracking but does not reduce fiber damage. In contrast, self-healing significantly decreases overall damage in glass/epoxy composites.

The review explains this asymmetry by material ductility. Self-healing is more effective at eliminating damage in glass/epoxy than in carbon/epoxy, primarily because glass/epoxy exhibits higher ductility, measured as percent elongation, than carbon/epoxy.

Beyond quasi-static and low-velocity impact, the review discusses the properties of helicoidal composites under high-velocity impact and high strain rates, and catalogs the biological materials documented over the past decade that inspire helicoidal designs. It also addresses the role of deep learning in data segmentation and in reducing the computational time required for modeling helicoidal composites.

As a narrative review, the article synthesizes published findings rather than reporting new experimental results, and it is published open access as an accepted manuscript that remains subject to further editorial edits. Its overall message is that combining bio-inspired helicoidal architecture with automated manufacturing, AI-driven process optimization, and self-healing chemistries offers a coherent route toward composites that resist impact damage more effectively than conventional laminates.

Subject of Research: Nature-inspired helicoidal hybrid composites, their advanced manufacturing, AI-enabled design, and impact-resistant mechanical performance

Article Title: A comprehensive review of advanced manufacturing techniques, ai-enabled design, and mechanical characterization of nature-inspired helicoidal hybrid composites for impact-resistant applications

Article References: Kakur, N., Nguyen, A. T., Sarmiento, E., & Kisailus, D. (2026). A comprehensive review of advanced manufacturing techniques, ai-enabled design, and mechanical characterization of nature-inspired helicoidal hybrid composites for impact-resistant applications. Advanced Composites and Hybrid Materials. https://doi.org/10.1007/s42114-026-02122-w

Image Credits: AI Generated

DOI: 10.1007/s42114-026-02122-w

Keywords: helicoidal composites, impact resistance, automated fiber placement, machine learning, self-healing, direct ink writing, carbon nanotubes, mantis shrimp, deep learning, hybrid composites, comprehensive, review