固体火箭发动机结构粘接质量的声-超声检测

详细信息

Acousto-Ultrasonic Testing for Bond Quality in Solid Rocket Motor Structure

摘要: 采用声-超声方法对复合材料壳体/绝热层试件进行了检测。试验采用自适应滤波法实现了对检测信号的降噪处理。采用小波变换实现了对信号的多分辨率分析。根据不同频带上信号的能量占比, 提取了信号的特征频带。对特征频带信号采用能量积分应力波因子可检出孔洞缺陷并定性分析缺陷大小。试验验证了声-超声方法对固体火箭发动机结构粘接质量检测的有效性。
- 固体火箭发动机 /
- 复合材料 /
- 声-超声检测技术 /
- 小波变换
Abstract: The specimen which was made up of composite shell and adiabatic layer was tested by AU technique. The noise in the tested signal was reduced by adaptive filtering, multi-resolution analysis of the signal was achieved by wavelet transform in the experiments. On the basis of the energy ratio of the signal in different frequency zones, the characteristic frequency zone of the signal was gained. The characteristic frequency zone of the signal from specimen was evaluated by energy integral stress wave factor(SWF). The porosity-type defect was found effectively, and the size of defect could be evaluated qualitatively. The validity of AU test for bond quality of SRM structure is approved in the experiments.
- Solid rocket motor /
- Composite /
- Acousto-ultrasonic testing technique /
- Wavelet transform

[1]	王维民, 庄福康.SRM燃烧室壳体/绝热层界面脱粘类型及解决的技术途径[J].推进技术, 1996, 17(1): 89.
[2]	隋兴堂, 杨兴根.火箭发动机界面脱粘分析及检测新方法[J].飞航导弹, 2001(1): 43-46.
[3]	李芳.固体火箭发动机包覆层状态识别的研究[D].北京: 北京航空航天大学, 2001.
[4]	李明轩.粘接质量超声检测研究[J]. 应用声学, 2002, 21(1): 7-12.
[5]	党长久, 李明轩.超声在固体火箭发动机无损检测中的应用[J].应用声学, 1994, 14(5): 32-38.
[6]	陈友兴, 王召巴.自适应滤波在多界面超声检测中的应用[J].中国测试技术, 2006, 32(4): 57-58.
[7]	龚雄襄.自适应滤波(时域自适应滤波和智能天线)第二版[M].北京: 电子工业出版社, 2003.
[8]	王勇.声-超声材料检测技术研究[D].北京: 清华大学, 2000.
[9]	童谷生.用于结构损伤评估中的应力波因子技术研究[D].南京: 南京航空航天大学, 2000.
[10]	Reifsnider K. Feasibility of useful real-time in-process evaluation of laminates[M]. Laneaster: Ashbee(ed), polymer NDE technomic pub, 1986: 104-115.