NDT.net - December 1998, Vol. 3 No. 12

Table of Contents ECNDT '98

Session: Civil Engineering

Objective Interpretation of Ultrasonic Concrete Image

R. Jansohn
Inst. für Massivbau

M. Schickert
MFPA, Germany
Email: JANSOHN@HRZ1.HRZ.TU-Darmstadt.de

TABLE OF CONTENTS

Summary

Introduction

Problem and Task Formulation

Signal Detection in Gaussian Noise

Characterisation of Grain Noise

Application of Statistical Detection Thresholds to Ultrasonic Saft-Images

Concluding Remarks

References

  1. Davenport, W.; Root, W.: An Introduction to the Theory of Random Signals and Noise. McGraw-Hill Book Company Inc., New York Toronto London, 1958
  2. Gammell, P. M.: Improved Ultrasonic Detection Using The Analytic Signal Magnitude. Ultrasonics, Vol. 19, No. 2, March 1981
  3. Rice, S. O.: Mathematical Analysis of Random Noise. Bell Systems Technical Journal 23, pp. 282 - 332, 1944 and 24, pp. 46 - 156, 1945
  4. Schickert, M.: Towards SAFT-Imaging in Ultrasonic Inspection of Concrete. International Symposium for NDT in Civil Engineering, Berlin: DGZfP, 1995
  5. Sekine, M.; Mao, Y.: Weibull Radar Clutter. IEE Radar, Sonar, Navigation and Avionics Series 3, Peter Peregrinus Ltd., London, 1990
  6. Skolnik, M.: Introduction to Radar Systems. McGraw-Hill International Editions, New York Toronto London, 1988
  7. ISO 9001 / EN 29001: Quality systems - Model for quality assurance in design / development, production, installation and servicing; May 1990
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