Nondestructive evaluation of multilayered structures using ultrasonic guided waves generated by an electromagnetic acoustic array transducer

2004 ◽  
Vol 115 (5) ◽  
pp. 2455-2455
Author(s):  
Michael Quarry
Keyword(s):  
Nondestructive Evaluation ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Multilayered Structures ◽  
Array Transducer ◽  
Acoustic Array

Mode Tuning of Guided Wave in a Seamless Stainless Steel Tube Using an Array Transducer

2005 ◽  
Vol 297-300 ◽  
pp. 2077-2082
Author(s):  
Young H. Kim ◽  
Sung Jin Song ◽  
Joon Soo Park ◽  
Jae Hee Kim ◽  
Heung Seop Eom
Keyword(s):  
Long Range ◽  
Guided Waves ◽  
Wave Mode ◽  
Steel Tube ◽  
Guided Wave ◽  
Ultrasonic Guided Waves ◽  
Stainless Steel Tube ◽  
Time Interval ◽  
Mode Identification ◽  
Array Transducer

Ultrasonic guided waves have been widely employed for the long range inspection of structures such as plates and pipes. In ultrasonic guided waves, however, there are numerous modes with different wave velocities, so that the generation and detection of the appropriate wave mode of the guided wave is one of key techniques in the application of guided waves. In the present work, mode tuning using an array transducer was investigated with hardware implements. For this purpose, 8-channel ultrasonic pulser and their controller which enables sequential activation of each channels with given time delay were developed. Transmitter tuning, group velocity measurements, reciver tuning, mode identification and long range transmission testing were carried out. As a result, the selective tuning of wave mode can be achieved by changing the time interval between adjacent elements of an array transducer.

ULTRASONIC GUIDED WAVES FOR THE INSPECTION OF ADHESIVELY BONDED JOINTS

2008 ◽  
Author(s):  
Padma Kumar Puthillath ◽  
Fei Yan ◽  
Clifford J. Lissenden ◽  
Joseph L. Rose ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints

Modeling the impact of soft tissue on axial transmission measurements of ultrasonic guided waves in human radius

2008 ◽  
Vol 124 (4) ◽  
pp. 2364-2373 ◽  
Author(s):  
Petro Moilanen ◽  
Maryline Talmant ◽  
Vantte Kilappa ◽  
Patrick Nicholson ◽  
Sulin Cheng ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Transmission Measurements ◽  
The Impact ◽  
Axial Transmission
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