Recent train accidents, associated direct and indirect costs, as well as safety concerns, have reaffirmed the need for developing rail defect detection systems more effective than those used today. One of the recent developments in rail inspection is the use of ultrasonic guided waves and noncontact probe techniques to target transverse-type defects. A rail inspection prototype based on these concepts is under development at University of California at San Diego (UCSD. This work reports on the feature extraction and automatic pattern recognition algorithms that are being tested in the laboratory and will be added to the prototype. The results demonstrate the detection and sizing of transverse, surfacebreaking cracks that extend for less than 20% of the rail head cross-sectional area.
Non-contact ultrasonic inspection of rails and signal processing for automatic defect detection and classification / Lanza di Scalea F.; Rizzo P.; Coccia S.; Bartoli I.; Fateh M.; Viola E.; Pascale G.. - In: INSIGHT. - ISSN 1354-2575. - STAMPA. - 47(6):(2005), pp. 346-353. [10.1784/insi.47.6.346.66449]
Non-contact ultrasonic inspection of rails and signal processing for automatic defect detection and classification
BARTOLI, IVAN;VIOLA, ERASMO;PASCALE GUIDOTTI MAGNANI, GIOVANNI
2005
Abstract
Recent train accidents, associated direct and indirect costs, as well as safety concerns, have reaffirmed the need for developing rail defect detection systems more effective than those used today. One of the recent developments in rail inspection is the use of ultrasonic guided waves and noncontact probe techniques to target transverse-type defects. A rail inspection prototype based on these concepts is under development at University of California at San Diego (UCSD. This work reports on the feature extraction and automatic pattern recognition algorithms that are being tested in the laboratory and will be added to the prototype. The results demonstrate the detection and sizing of transverse, surfacebreaking cracks that extend for less than 20% of the rail head cross-sectional area.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
