Proceedings of the
9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2022)
15 – 18 November 2022, Singapore

Hybrid Composites With Integrated Metallic Connectors: The Effects of Insert Geometry on the Mechanical Performance of Composite Structures

Wei Ming Yek1, Stephen Daynes1, Stefanie Feih1, Ridha Muhammad2, Zhoucheng Su2, Sridhar Narayanaswamy2 and Le Quan Ngoc Tran1,a

1Singapore Institute of Manufacturing Technology, 73 Nanyang Drive, 637662, Singapore

2Institute of High Performance Computing, 1 Fusionopolis Way, 138632, Singapore


Carbon fibre reinforced thermoplastic composites provide excellent specific mechanical properties, rapid processing solutions and recyclability, which are highly suitable for manufacturing lightweight automotive and aircraft components. In practical applications of the composites, there is a requirement for joining composite parts with metal parts or composite parts together. This is commonly conducted via mechanical fasteners or adhesive bonding. Our study proposes hybrid composite solutions in which metallic load introduction inserts are embedded into composite laminates during composite manufacturing process. Design of inserts and optimization of the inserts' geometry are carried out to understand their effects on pull-out strength of the insert in the hybrid structure. Pull-out testing is performed on hybrid structures with variation of insert parameters including base-plate diameter, insert position and insert materials. Failure progression of the composites under pull-out loading is also investigated. The results of the study suggest optimal insert geometries and provide a deep understanding on failure behavior of the hybrid system under loading.

Keywords: Thermoplastic composites, Hybrid structure, Joint design and characterization

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