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Unsupervised Classification of Acoustic Emission Sources from Aerial Man Lift Devices

Athanassios Anastassopoulos, Dimitrios Kouroussis, Apostolos Tsimogiannis.
ENVIROCOUSTICS S.A., El. Venizelou 7 & Delfon, 114 52 Athens GREECE
info@envirocoustics.gr
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ABSTRACT

1. INTRODUCTION

2. EXPERIMENTAL PROCEDURE

3. PATTERN RECOGNITION ANALYSIS

4. EVALUATION OF RESULTS & CLASS CHARACTERISATION

SUPERVISED PATTERN CLASSIFICATION

DISCUSSION AND CONCLUSIONS

REFERENCES

  1. ASTM E 569-97, "Standard Practice for Acoustic Emission Monitoring of Structures During Controlled Stimulation".
  2. A. A. Pollock, "Acoustic Emission Inspection", Metals Handbook, 9th Edition, Vol. 17, ASM International, 1989, pp. 278-294.
  3. Non Destructive Testing Handbook, Vol. 5, "Acoustic Emission Testing", Tech. Edt. Ronnie Miller, ASNT 1987.
  4. S. J. Vahaviolos, "Acoustic Emission: A new but sound NDE technique and not a panacea" in NDT, eds. D. Van Hemelrijck & A. Anastassopoulos, 1996, Balkema, pp. 101-115.
  5. Kenneth Moore and C. A. Larson, "Aerial Equipment requires thorough, regular inspection", PAC Technical Report TR-107-2-1/84.
  6. J. R. Mitchell and David G. Taggart, "Acoustic Emission Testing of Insulated Bucket Trucks", Electric Utility Fleet Management, December/November 1983, pp. 41-50.
  7. A. H. Bingham and William C. Veal, "Georgia Power Company Acoustic Emission Test Program", ASTM STP-1139, 1992, pp.1-21.
  8. ASTM F-914-91, "Standard Test Method for Acoustic Emission for Insulated Aerial Personnel Devices",
  9. EN-61057:1993, APPENDIX L (Informative), "Acoustic Emission on Aerial Devices with Insulated Booms - Test Method".
  10. ASTM F-1430-92, "Standard Test Method for Acoustic Emission for Insulated Aerial Personnel Devices with Supplemental Load Holding Attachements",
  11. A. A. Anastassopoulos, T. P. Philippidis, " Clustering Methodologies for the evaluation of AE from Composites ", J. of Acoustic Emission, Vol. 13, Noa 1/2, 1995, pp 11-21.
  12. T. Philippidis, V. Nikolaidis, A. Anastassopoulos, "Damage Characterisation of C/C laminates using Neural Network Techniques on AE signals", NDT&E International, Vol. 31, No 5, Elsevier 1998, pp. 329-340.
  13. Envirocoustics S.A., "NOESIS reference manual", rev. 0, October 1999.
  14. A. A. Anastassopoulos, V. N. Nikolaidis and T. P. Philippidis, "A Comparative study of Pattern Recognition Algorithms for Classification of Ultrasonic Signals", Neural Computing & Applications, 1999, Vol. 8, pp 53-61.

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