Salvus efficiently computes wavefields propagating in engineering components with complex geometries, including those of interest for nondestructive testing. In this application, we see the scattered wavefield emitted by an ultrasound transducer array and interacting with a critical thickness variation of a pipeline. By examining the character of this scattered wavefield, and combining it with our full-waveform inversion functionality, Salvus is opening up exciting new paths towards corrosion mapping and pipeline monitoring.