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Ultrasonic Inspection Technology of Defect Detection of Propellant/Liner Debond & Propellant Microcrack  

Na, Sung-Youb (국방과학연구소)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.11, no.1, 2007 , pp. 34-42 More about this Journal
Abstract
Ultrasonic inspection method is more profitable than X-ray radiographic inspection in cost and effect of defect detection such as debond, damage, and it doesn't need special constructions. The method can also be a possible real time inspection with safety. This report explains 1)the experiment and analysis of ultrasonic property of solid propellant, 2)the inspection methods of propellant/liner debond by inside or outside inspection, and 3)the inspection methods of propellant microcrack by damage. From the results, it is possible to detect the defect of propellant/liner debond by inside or outside inspection. Futhermore, it can be possible to detect the propellant microcrack caused by damage using the ultrasonic attenuation.
Keywords
Ultrasonic Inspection; Rocket Motor; Propellant; Non-destructive Test; Debond; Mcrocrack;
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