An ultrasound based technique for the detection and classification of flaws inside large sizes marble or stone structural elements

There is a growing interest in using ultrasound diagnostic techniques for non-destructive testing of marble/stone blocks or structural elements with large sizes, in order to detect internal flows such as cracks or fissures. Here a specific diagnostic procedure, based on ultrasound transmission measurement is proposed. A prototype of a measuring set-up, suitable for an in-field use, is described and the experimental results reported.