Ultrasonic Guided Wave Nondestructive Testing for Helicopter Rotor Blades
Ultrasonic guided waves are used to detect the delamination between skin and honeycomb of a composite helicopter rotor blade. Theoretical work is carried out for guided waves in the trailing edge of a rotor blade, which is a multilayer composite skin/NOMEX half space structure. The dispersion relation is obtained with the global matrix method. Theoretically driven experiments are conducted on a composite rotor blade section to illustrate the effect of delamination to through transmission ultrasonic energy. Animations will be shown to demonstrate the delamination detecting concept. The study of guided wave excitation and propagation provide analytical background for optimization of ultrasonic transducers.
Guided wave Dispersion curve Global matrix method Rotor blade Nondestructivetesting
Xue QI Joseph L. ROSE Chunguang XU
Department of Engineering Science and Mechanics, The Pennsylvania State University,University Park, School of Mechanical and Vehicular Engineering, Beijing Institute of Technology University, Beijing,
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
1491-1497
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）