Re: review of Impact Echo methods : I need get a systematical knowledge of the development history of Impact Echo methods. so would you like to help me by recommending some articles or books?
Additionally to the list provided by Rolf, you will find some more application of the scanning impact-echo method -2D impact-echo- (i.e. the latest developments)by looking at
Colla, C., Krause, M., Maierhofer, Ch., Höhberger, H.-J., H. Sommer, Combination of NDT techniques for site investigation of non-ballasted railway tracks, J. Non-destructive testing and evaluation International, 2002, Vol. 35, (2), pp. 95-105.
Colla C., H. Wiggenhauser, Developments in Impact Echo for the investigation of concrete structures, Structural Material Technology: an NDT Conference, Atlantic City, NJ, 28 Feb 3 March 2000, S. Alampalli (ed.), Technomic Publishing, Lancaster, Basel, 2000, pp. 350 - 356.
Colla C., G. Schneider, H. Wiggenhauser, Automated Impact-Echo and method improvement: 2- and 3-D imaging of concrete elements, in Uomoto, T. (ed.); Seiken Symposium No. 26, NDT in Civil Engineering Conf, Tokyo, Japan, 25-27 April 2000, Elsevier 2000, pp. 471-480