Source fields reconstruction on a 3D structure in noisy environment

Nowadays, noise source identification remains a current challenge in industry to be able to act at the origin of noise. Since decades, many identification methods have been developed but most of them are not suitable for industrial applications. In this context, the presented method named Mixed - inverse Patch Transfer Functions (M-iPTF), could be promising as it is able to reconstruct acoustic fields on irregularly shaped sources, only needs pressure measurements and can be performed in a noisy environment. The present paper describes the theoretical background of the M-iPTF method, based on the application of the Green's identity on a virtual cavity surrounding the source, and its application results on a baffled oil pan excited with an electro-dynamic shaker, with and without the presence of a secondary correlated source.