Real-time dual-channel ultrasonic system for inspection of aircraft structures
Ultrasonic inspection techniques have a proven record of applications during manufacturing and maintenance of metallic and composite aircraft structures. A-scan, B-scan, and C-scan modalities of ultrasonic imaging are deployed as independent evaluation tools by many researchers and NDI practitioners. However, modern manufacturing and maintenance procedures require real-time three-dimensional information about the condition of multi-layered structures. This kind of information can only be provided when several ultrasonic scanning modalities are combined. In this paper, we will present an integrated dual-channel system for real-time threedimensional evaluation of large area aircraft structures. The structure to be imaged is insonified using either a piezoelectric transducer or a laser-based acoustic generator. The receiver system consists of two integrated data acquisition channels that are utilized for concurrent in-plane and in-depth real-time evaluation of structures. High resolution imaging (horizontal) channel with an ultrasonic CCD camera presents large (1square inch) real-time planar (X-Y plane) images of the structures while another (vertical) acquisition channel analyzes in-depth (Z-axis) ultrasonic scans presenting data in an A-scan format. Applications of the dual-channel real-time ultrasonic imaging system on metallic and composite aircraft structures will be presented.
ultrasonic imaging composite structures
Brad REGEZ Goutham KIRIKERA Igor KOMSKY Bob LASSER Sridhar KRISHNASWAMY
Center for Quality Engineering and Failure Prevention, Northwestern University, Evanston, IL 602082I Imperium Inc, Maryland, USA
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
1108-1115
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）