In view of the reduction of inspection costs and construction time for various products, the establishment of high-efficiency inspection technology is desired. For the inspection of the inside of products with complicated shape surfaces and irregularities caused by welding, surface smoothing processing for ultrasonic testing such as surface grinding and putty filling is required, and excess costs and time are needed. Mitsubishi Heavy Industries, Ltd. (MHI) introduced ultrasonic signal processing technology which does not require smoothing processing for complicated surfaces and developed an inspection technology which allows real-time imaging of minute flaws on the inside of a product.
