... suitable techniques for early forecasting of the degradation process and detecting the existence of the mechanical defects in long pipelines. Cylindrical guided wave technique is becoming popular for detecting existing defects as well as crack formation and growth in pipes. guided wave ultrasonic...

... ) and the very low impedance of a gas, for example, ambient air ( 0.0004 MRayl ) , causes significant reflections at the interfaces. The strategy of this investigation was to develop an ultrasonic transducer capable of replacing a small portion of pressure vessel wall. In building such a transducer, acoustic...

... and deepwater inspection applications using a specialized instrumentation. 03 03 2005 15 04 2005 offshore installations mechanical products corrosion wetting drying ultrasonic materials testing eddy current testing radiography reviews ultrasonic transducers flaw detection...

... dimensions are in inches) Diagram of the dent and the induced deformation 28 02 2005 06 04 2005 ultrasonic materials testing ultrasonic transducers pipelines principal component analysis flaw detection Underground pipelines used for transporting...

... materials testing ultrasonic transducers thickness measurement steel inspection The natural gas transmission and distribution pipeline system is an extensive network that has been in place for many years safely delivering gas to customers and industrial users. To insure the safety...

... pressure vessels ultrasonic transducers gas sensors vibrations resonance Several techniques have been reported in the past literature for measuring various properties of gas filled pressure vessels. These include acoustic emission ( 1 ) and angle beam ultrasonic methods ( 2 ). In other studies...

... caused by pitting corrosion is shown in Fig. 3 . Reduction of cross-sectional area caused by pitting corrosion of the reinforcing steel bar steel concrete corrosion mortar ultrasonic materials testing bending strength construction components ultrasonic transducers acoustic...