TY - GEN
T1 - Fouling detection based on analysis of ultrasonic guided waves using wavelet transform
AU - Silva, J. J.
AU - Silva, K. M.
AU - Lima, A. M.N.
AU - Neto, J. S.Rocha
PY - 2008
Y1 - 2008
N2 - Fouling detection is a relevant problem for chemical, oil, food and pharmaceutical industries. Fouling consists of the deposition of heavy organic materials and other dissolved solids or in suspension in fluid transport system. The ultrasonic guided waves present specific characteristics and have demonstrated good results in detection of flaws in pipelines. In this paper, the application of wavelet transform to analyze ultrasonic signals in order to detect fouling in pipelines is presented. A platform of tests has been used to emulate the fouling problem. The pipelines were used as a medium to guide ultrasonic waves and weekly measurements were used to observe the fouling process. The Daubechies 4 wavelet was applied to each measurement set. The results reveal that the variations of the energy-spectrum of the wavelet detail coefficients may provide an appropriate way to detect fouling, since it was observed that the increase of the fouling causes a notable reduction in the energy values.
AB - Fouling detection is a relevant problem for chemical, oil, food and pharmaceutical industries. Fouling consists of the deposition of heavy organic materials and other dissolved solids or in suspension in fluid transport system. The ultrasonic guided waves present specific characteristics and have demonstrated good results in detection of flaws in pipelines. In this paper, the application of wavelet transform to analyze ultrasonic signals in order to detect fouling in pipelines is presented. A platform of tests has been used to emulate the fouling problem. The pipelines were used as a medium to guide ultrasonic waves and weekly measurements were used to observe the fouling process. The Daubechies 4 wavelet was applied to each measurement set. The results reveal that the variations of the energy-spectrum of the wavelet detail coefficients may provide an appropriate way to detect fouling, since it was observed that the increase of the fouling causes a notable reduction in the energy values.
UR - http://www.scopus.com/inward/record.url?scp=57849127700&partnerID=8YFLogxK
U2 - 10.1109/ISIE.2008.4677064
DO - 10.1109/ISIE.2008.4677064
M3 - Conference contribution
AN - SCOPUS:57849127700
SN - 1424416655
SN - 9781424416653
T3 - IEEE International Symposium on Industrial Electronics
SP - 1187
EP - 1191
BT - 2008 IEEE International Symposium on Industrial Electronics, ISIE 2008
T2 - 2008 IEEE International Symposium on Industrial Electronics, ISIE 2008
Y2 - 30 June 2008 through 2 July 2008
ER -