Introduction of BSS into VR-based test and simulation-with application in NDE

VR-based test and simulation system(VTSS) is a concept put forward in the authors' previous works. In a VTSS, the test processes are interactively planned, optimized and simulated in a virtual test environment generated by computer, aiming at eventually performing tests completely in virtual test environments. To make VTSS intelligent and practical, the technique of blind source separation (BSS) is introduced into VTSS. With ultrasonic non-destructive evaluation (NDE) as the technical background, a prototype of the system has been described in this paper. BSS is adopted in VTSS to serve three purposes: defect classification, system modeling and noise reduction. The conclusion is that BSS can play a very important role in VTSS.