OS02W0433 Nondestructive testing of bonding integrity between tiles and wall using sonic-shearography

Abstract

A main effort in the maintenance of high-rise buildings is to inspect external walls for tile separation. This paper reports a novel optical method known as sonic-shearography for detecting and assessing bonding integrity between the tiles and the external wall of buildings. The inspection process is non-contact and full-field, and it allows the size, shape and location of debonds to be determined. Being quantitative in nature, this technique enhances the efficacy of maintenance strategies for early prevention against falling tiles.