Fusão Multimodal para Visualização 3D de Defeitos Usando Termografia Infravermelha

Abstract

Along with the many advances in various fields of engineering, the demand for quality control of parts has increased. This need is directly related to reducing the risks of critical failures, unexpected stops in production lines and, consequently, greater safety, depending on the case analyzed. In order to make this control possible, some analysis techniques have been developed, from direct tests on the part to the quality of the final product. Infrared thermography (IRT) has stood out from other failure analysis techniques because it can provide internal (subsurface) structural information about the part while being nondestructive and fast. However, its result is a 2D image and can be difficult to interpret. To facilitate the interpretation of the results, the present work aimed to present a multimodal fusion analysis method, based on the thermographic image and on a 3D model of the part. Therefore, the 3D modeling of the part in a \textit{software}, the projection of its points on the plane, according to the referential of the camera used in the thermographic test, and subsequent correlation between the projection and the thermography data were performed. In this way, it was concluded that multimodal fusion is an interesting technique to be applied and that it can be of great help for the structural analysis of the part.