Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 05, 2021 - September 08, 2021
Nowadays, composite materials are widely used in aircraft structures, and adhesive bonding is expected to be a further lightening technology. Although fastener-less structures are ultimate configuration, adhesively-bonded joints in aircraft structures are currently used in conjunction with fasteners. Commercial aircrafts shall be issued airworthiness certificate, and its safety requirements for adhesively-bonded joints are strict and hard to realize the fastener-less structures in the current technology. For realizing the fastener-less structures, there are several technical challenges: crack stoppers in bondlines not using fasteners to prevent catastrophic failure, non-destructive techniques for evaluating the strength of adhesively-bonded joints after curing and during operation, and cost reduction of the bonding process of aircraft structures, in particular, a surface treatment process.
