NDTnet - October 1996, Vol.1 No.10

Comparison of Pulse-Echo-Methods for Testing Concrete

M. Krause ( krause@zfpbau.bam-berlin.de, C. Maierhofer, H. Wiggenhauser (whauser@zfpbau.bam-berlin.de; BAM Berlin (D)
O. Bärmann, K Langenberg; Universität Gh Kassel, Kassel (D)
R. Frielinghaus; Krautkramer ( kroggel@hrz1.hrz.th-darmstadt.de); TH Darmstadt, Darmstadt (D)
J. Neisecke, F. Wollbold (wollbold@busch.bauwesen.uni-dortmund.de); Universität Dortmund, Dortmund, (D)
M. Schickert (Martin.Schickert@mfpa.de); MFPA Weimar, Weimar (D)

Keywords: Concrete, Impact-Echo, Radar, Ultrasound
This paper was presented at the International Symposium Non-DestructiveTesting in Civil Engineering (NDT-CE) 26.-28.09.1995 in Berlin. NDT-CE, Full Program or the Ultrasound Part


Abstract

Pulse-echo methods (Radar Impact-Echo, Ultrasonic Impulse-echo) and simulation of wave propagation are applied for testing concrete specimens with metal ducts. The results of non- destructive testing of the same specimens effectuated by nine working groups are described and compared.

1 Introduction

2 Test Specimens, Objectives, Methods

3 Results

3.1 Short Presentation of Special Results
3.1.1 Radar

3.1.2 Impact-Echo

3.1.3 Ultrasonic Pulse Echo, A-scan

3.1.4 Ultrasonic Pulse Array

3.1.5 Ultrasonic Pulse Echo, B-scan

3.1.6 Ultrasonic Pulse Echo, B-scan, LSAFT

3.1.7 /8 Ultrasonic Pulse Echo: 2D-Synthetic Aperture and 3D-SAFT

3.1.9 EFIT Simulation

3.2 Comparison of Results

4 Conclusion

5 Acknowledgments

6 References

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