Chongqing University
Department of Mechanical Engineering, Chiba University
JAL Engineering Co. Ltd. (JALEC)
Japan Aerospace Exploration Agency (JAXA)
Chongqing University : Department of Mechanical Engineering, Chiba University
Chongqing University
Chongqing University
Chongqing University
出版者（英）
Multidisciplinary Digital Publishing Institute (MDPI AG)
雑誌名
Sensors
巻
14
号
11
ページ
20439 - 20450
発行年
2014-10-29
抄録（英）
To improve the reliability of a Lamb wave visualization technique and to obtain more information about structural damages (e.g., size and shape), we put forward a new signal processing algorithm to identify damage more clearly in an inspection region. Since the kinetic energy of material particles in a damaged area would suddenly change when ultrasonic waves encounter the damage, the new algorithm embedded in the wave visualization technique is aimed at monitoring the kinetic energy variations of all points in an inspection region to construct a damage diagnostic image. To validate the new algorithm, three kinds of surface damages on the center of aluminum plates, including two non-penetrative slits with different depths and a circular dent, were experimentally inspected. From the experimental results, it can be found that the new algorithm can remarkably enhance the quality of the diagnostic image, especially for some minor defects.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
An Efficient Algorithm Embedded in an Ultrasonic Visualization Technique for Damage Inspection Using the AE Sensor Excitation Method
