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Boron nitride inclusions within adhesive joints: Optimization of mechanical strength and bonded defects detection

Barus, Matthias and Welemane, Hélène and Nassiet, Valérie and Fazzini, Marina and Batsale, Jean-Christophe Boron nitride inclusions within adhesive joints: Optimization of mechanical strength and bonded defects detection. (2020) International Journal of Adhesion and Adhesives, 98. 1-10. ISSN 0143-7496

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Official URL: https://doi.org/10.1016/j.ijadhadh.2019.102531

Abstract

Non Destructive Testing (NDT) by active InfraRed Thermography (IRT) of bonded Carbon Fibers Reinforced Plastic (CFRP) laminates is a very challenging issue. Adding Boron Nitride (BN) particles within the joint material provides an interesting solution to better capture bonding defects. Though increasing additives leads to the improvement of NDT, the validation of this solution requires the mechanical characterization of the new joint material. In this way, the influence of particles on the mechanical properties of the adhesive joint is first investigated via double strap lap shear tests for different BN volume fraction. At the same time, controlled size void inclusions are generated within composite assemblies in order to evaluate the IRT ability to detect bonded defects inside BN-based adhesives. It is demonstrated that thermal data post-processing methods such as Singular Values Decomposition (SVD) and Principal Component Thermography (PCT) help to get the best trade-off be­ tween mechanical performance and defect detection.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Arts et métiers science et technologie Bordeaux (FRANCE)
Other partners > Bordeaux INP - BINP (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut national de recherche pour l'agriculture, l'alimentation et l'environnement - INRAE (FRANCE)
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Deposited On:08 Dec 2020 15:13

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