A Pitch-Catch Based Online Structural Health Monitoring of Pressure Vessels, Considering Corrosion Formation

Document Type : Persian

Authors

1 دانشجوی کارشناسی ارشد، دانشگاه آزاد اسلامی واحد خمینی شهر

2 استادیار، دانشکده مکانیک، دانشگاه آزاد اسلامی واحد خمینی شهر

3 استادیار، دانشکده مکانیک، دانشگاه تربیت مدرس

Abstract

Structural health monitoring is a developing research field which is multifunctional and can estimate the health condition of the structure by data analyzing and also can prognosticate the structural damages. Illuminating the damages by using piezoelectric sensors is one of the most effective techniques in structural health monitoring. Pressurized equipments are very important components in process industries such as oil, gas, petrochemical and power plants, that their health monitoring is vital. The aim of this research is to introduce a technique to illuminate the damages in these equipments by using guided waves. Thereby, two different specimens were used as pressurized vessels at different conditions: pristine and corroded. Different internal pressures were also studied. Piezoelectric transducers were electromechanically coupled to the vessels and the guided waves were propagated by using pitch-catch method. The outcomes indicated that damage parameters in vessels such as corrosion and pressure changes have considerable effect on the signals that piezoelectric sensors receive. Corrosion, the most common damage in pressurized vessels, reduce the signal domain in frequency field to 11%. Also increasing pressure reduce the signal domain.
We can used these outcomes to innovate a technique for structural health monitoring of pressure equipmentss.

Keywords


[1] Ladokun T., Nabhani F., and Zarei S., Accidents in Pressure Vessels: Hazard Awareness, Proceedings of the World Congress on Engineering, 30 June – 2 July 2010, London, U.K.
[2] Balages D., Fritzen C., Güemes A., Structural Health Monitoring, Wiley-ISTE, 2006.
[3] Ennaceur C., Laksimi A., Herve´ C. and Cherfaoui M., Monitoring crack growth in pressure vessel steels by the acoustic emission technique and the method of potential difference, International Journal of Pressure Vessels and Piping, vol. 83, 2005, pp. 197–204.
[4] Frias C., Faria H., Frazão O., Vieira P. and Marques A.T., Manufacturing and testing composite overwrapped pressure vessels with embedded sensors, Materials and Design, vol. 31, 2010, pp. 4016–4022.
[5] Dongyu X., Xin C., Shifeng H. and Minhua J., Identifying technology for structural damage based on the impedance analysis of piezoelectric sensor, Construction and Building Materials, vol. 24, 2010, pp. 2522–2527.
[6] Giurgiutiu V., Structural Damage Detection with Piezoelectric Wafer Active Sensors, Journal of Physics: Conference Series, vol. 305, 2011.
[7] Mohd Aris K.D., Mustapha F., Sapuan S.M. and Dayang A.M., A Structural Health Monitoring of a Pitch Catch Active Sensing of PZT Sensors on CFRP Panels: A Preliminary Approach, InTech, 2012.
[8] Li F., Liu Z., Sun X., Li H. and Meng G., Propagation of guided waves in pressure vessel, Wave Motion, vol. 52, 2014, pp. 216–228.
 [9] Giurgiutiu V., Structural Health Monitoring With Piezoelectric Wafer Active Sensors, Second Edition, Columbia, SC, USA, University of South Carolina, 2014.
[10] Giurgiutiu V., Lamb Wave Generation with Piezoelectric Wafer Active Sensors for Structural Health Monitoring, 10th Annual International Symposium on Smart Structures and Materials, San Diego, 2002.
 [11] Lin B., Giurgiutiu V., Modeling Power and Energy Transduction of Embedded Piezoelectric Wafer Active Sensors for Structural Health Monitoring, SPIE International Symposium on Smart Structures and Materials, San Diego, 2010, pp. 47-97.
 [12] Mohd A.W. and Farhan M., “An Investigationof Non Destructive Testing of Pressure Vessel”, International Journal of Emerging Technology and Advanced Engineering, Issue 1, vol. 3, 2013.