Direct Visualization of Mechanical Behavior During Adhesive Bonding Failure Using Mechanoluminescence (ML)

Abstract

AbstractIn this chapter, we introduce recent progress in direct visualization of mechanical behavior in the failure process of adhesive bonding by mechanoluminescence (ML). Firstly, basic mechanoluminescence technologies are introduced in terms of materials, sensors, sensing technologies in Sects. 1 and 2. Then, for considering effective application of ML sensing that takes advantage of technological features, (Sect. 3) structural health monitoring (SHM)/Conditioning based monitoring (CBM), and (Sect. 4) innovation in design and prediction are discussed from the viewpoint of visualizing mechanical behavior, deterioration, and failure process as killer application of ML sensing. Furthermore, visualizing the mechanical behavior of adhesive joints, fracture initiation points, and fracture processes will be introduced based on time-series information of mechanoluminescence (ML) images, using internationally standardized adhesion strength tests.