Ultrasonic Tomography of Concrete

Recent studies have suggested that advanced image reconstruction methods could be useful for finding and imaging steel reinforcement encased in bridges. In a program supported by the Army Corps of Engineers, IMS conducted several exploratory ultrasonic studies to develop and demonstrate tomography and synthetic aperture imaging methods applied to concrete inspection. The investigations suggest that for concrete, synthetic aperture imaging methods yield superior image clarity compared with tomography. The various panels show the test objects and various acoustic images.  This work was carried out in a frequency range from 200 to 500 Khz.