Multi-material Adhesive Bonded Joints Under Static And Dynamic Loading

Author

Gizem Derya Demir, CUNY City CollegeFollow

Date of Award

2025

Document Type

Dissertation

Department

Mechanical Engineering

First Advisor

Feridun Delale

Second Advisor

Niell Elvin

Keywords

3D printed metal, FEA, High speed impact testing, Mechanical properties of adhesive

Abstract

Adhesively bonded joints present significant potential for reducing structural weight and enhancing performance in modern and future engineering structures. By enabling the elimination or reduction of traditional mechanical fasteners and facilitating the integration of dissimilar materials, adhesives can contribute to more efficient, lightweight designs. However, to fully leverage these benefits—especially in high-performance applications—adhesive materials must exhibit robust behavior under both static and dynamic loading conditions, such as ballistic impact. Despite their promise, the failure mechanisms of adhesives under such high-strain-rate scenarios remain insufficiently understood.

This dissertation investigates the performance of adhesively bonded multi-material joints subjected to static loading and ballistic impact, with a particular focus on understanding the response of multi-material joints under normal and shear impact conditions. The research encompasses several key components: creating test specimens, testing and analyzing bonded joints under static loads, conducting ballistic tests to assess their dynamic performance (such as critical failure velocity, residual strength, and energy absorption) and the development of validated finite element models to simulate adhesive response at high and low strain rates.

The study also introduces a systematic and reproducible manufacturing process for preparing bonded specimens, ensuring consistency for future experimental and industrial applications. Experimental configurations include combinations of metals and glass fiber-reinforced composites, with special attention given to joints involving 3D printed H13 tool steel bonded to aluminum. The insights gained from this work aim to inform the design of lightweight, impact-resistant bonded structures and contribute to the broader understanding of dynamic adhesive joint behavior.

Recommended Citation

Demir, Gizem Derya, "Multi-material Adhesive Bonded Joints Under Static And Dynamic Loading" (2025). CUNY Academic Works.
https://academicworks.cuny.edu/cc_etds_theses/1272