An Inverse Approach for Capturing the Interaction of Macro- and Micro-Scales in Characterizing Bonded Composite Joints

2000 ◽  
Author(s):  
Erdogan Madenci
Keyword(s):  
Composite Joints ◽  
Inverse Approach ◽  
Bonded Composite

An analytical model for the strength prediction of hybrid (bolted/bonded) composite joints

2013 ◽  
Vol 97 ◽  
pp. 252-260 ◽  
Author(s):  
Christophe Bois ◽  
Hervé Wargnier ◽  
Jean-Christophe Wahl ◽  
Erwann Le Goff
Keyword(s):  
Analytical Model ◽  
Strength Prediction ◽  
Composite Joints ◽  
Bonded Composite

A RADIATION SENSITIVE ADHESIVE SYSTEM FOR FUNCTIONALLY GRADED COMPOSITE JOINTS

2021 ◽  
Author(s):  
SAMUEL B. HURVITZ ◽  
SCOTT STAPLETON ◽  
JAMAL HUSSEINI
Keyword(s):  
Adhesive Bond ◽  
Adhesive System ◽  
High Energy ◽  
Bond Line ◽  
Functionally Graded ◽  
Composite Joints ◽  
Stress Concentrations ◽  
Functionally Graded Composite ◽  
Bonded Composite ◽  
Radiation Sensitizer

Adhesively bonded composite joints can help reduce weight in structures and avoid material damage from fastener holes, but stress concentrations formed at the edges of the adhesive bond line are a main cause of failure. Stress concentrations within the adhesive can be reduced by lowering the stiffness at these edges and increasing the stiffness in the center of the joint. This may be achieved using a dual-cure adhesive system, where conventional curing is first used to bond a lap joint, after which high energy radiation is applied to the joint to induce additional crosslinking in specific regions. Anhydride-cured epoxy resins have been formulated to include a radiation sensitizer enabling the desired cure behavior. Tensile testing was performed on cured systems containing varying levels of radiation sensitizer in order to evaluate its effects on young’s modulus as a function of radiation dose.

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