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Lorenz, M. (author), Wielinga, T.S. (author), Technisch Physische Dienst TNO - TH (author)
Due to the recent improvements in nondestructive inspection (NDI) techniques, even small or weak inhomogeneities can be detected and discrimination between critical and non-critical defects becomes more crucial. In practice, welded regions of steel components are of special interest. Characterizing a detected inhomogeneity may be done by using...
article 1993
Lorenz, M. (author), van der Wal, L.F. (author), Berkhout, A.J. (author), Technisch Physische Dienst TNO - TH (author)
At the end of 1988 a research project was started to develop a practical, high-resolution imaging method for ultrasonic NDI, based on the Synthetic Aperture Focusing Technique (5APr). This project was initiated by the TNO Institute of Applied Physics and two major companies in The Netherlands. As conventional single-transducer measurements do...
article 1991