Exploring Adhesive Bonding and Stress Distribution in Fiber Composite Structures: Insights for Biomedical Implant Design

This study investigates the mechanical behavior of glass fiber composite components bonded with an adhesive layer, offering insights for the design of biomedical implants and other engineering applications. Two surface geometries were analyzed: a smooth surface and a grooved surface, to evaluate the effect of geometric design on stress distribution and overall joint strength. Numerical simulations were performed using the ABAQUS software, employing the porcelain layer approach to simulate a 18-layer composite structure accurately. The adhesive was modeled with both elastic and plastic properties, and failure analysis was conducted using the maximum stress criterion to identify and eliminate overstressed elements. In addition to the numerical analysis, recommendations for experimental validation are provided to enhance the reliability of the findings. Furthermore, the study discusses the influence of material diversity, environmental conditions (such as humidity and temperature), and complex surface geometries on joint performance. The results demonstrate that grooved surfaces promote more uniform stress distribution and improve joint strength, which is crucial for enhancing the longevity and stability of adhesively bonded components in biomedical and industrial applications.