Title: INVESTIGATION OF A NOVEL SURFACE PREPARATION METHOD FOR RELIABLE COMPOSITE BONDING

Authors: Yiqiang Zhao, Leonard MacAdams, Fayaz Ali

DOI: 10.33599/nasampe/s.23.0102

Abstract: Surface preparation is a critical step in the bonding of composite structures and plays a major role in determining the final properties of the bonded joint. However traditional methods of surface preparation, such as grit blasting, can be labor intensive and may not provide the desired level of bonding performance. One way to improve the bonding performance of composite structures is to promote chemical bonding between the adhesive and the cured composite substrates. This paper presents a unique method of surface preparation that ensures chemical bonding between adhesive and the composite substrates. The paper also reports quasi-static lap shear and Mode 1 G1c data that demonstrate significantly increased bonding performance of chemically bonded structures compared with grit blast as control. Composite to metal peel data are also presented, showing that chemical bonding strengthens the composite to adhesive interface, thereby significantly improves the peel performance of the bonded joint.

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Conference: SAMPE 2023

Publication Date: 2023/04/17

SKU: TP23-0000000102

Pages: 15

Price: $30.00