Wavelet Transform and Bispectrum Applied to Acoustic Emission Signals from Adherence Scratch-Tests on Corroded Galvanized Coatings

Antolino Gallego; Jose F. Gil; J.M. Vico; Enrique Díaz Barriga-Castro; J.E. Ruzzante; Rosa Piotrkowski

doi:10.4028/www.scientific.net/AMR.13-14.83

Paper Titles

Experimental Validation of Dispersion Curves in Plates for Acoustic Emission
p.53

Contrasts between the Acoustic Emission Signals Generated by Monopole Versus Dipole Sources
p.61

Progress Towards a Forward Model of the Complete Acoustic Emission Process
p.69

Acoustic Emission Source Location Based on Signal Features
p.77

Wavelet Transform and Bispectrum Applied to Acoustic Emission Signals from Adherence Scratch-Tests on Corroded Galvanized Coatings
p.83

AE Sensor Calibration for Out-of-Plane and In-Plane Displacement Sensitivity
p.91

Acoustic Emission Detection Using a Novel Fibre Optic Sensor
p.99

Cutting Process Monitoring by Means of Acoustic Emission Method; Part I - New Approach of Acoustic Emission Sensor; Part II - Transformation of Acoustic Emission into Audible Sound
p.105

Development of High-Temperature Acoustic Emission Sensor Using Aluminium Nitrade Thin Film
p.111

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 13-14Wavelet Transform and Bispectrum Applied to...

Wavelet Transform and Bispectrum Applied to Acoustic Emission Signals from Adherence Scratch-Tests on Corroded Galvanized Coatings

Abstract:

Wavelet analysis and bispectrum was applied to Acoustic Emission (AE) signals from scratch tests on corroded hot-dip galvanized samples in order to achieve the detection of corrosion products in pieces non reachable by visual inspection. AE signals were correlated with the fracture mechanisms occurring during scratch tests, while the contact force increased. Results were corroborated by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDX) and X-Ray Diffraction (XRD).