Developments in Structural Proof Testing for Aircraft Composite Components
This paper evaluates structural proof testing methods for the detection of manufacturing defects in aircraft composite components. A static proof test method based on compliance and surface strain mapping and a dynamic (vibration) method based on mode shape curvature (MSC) analysis are evaluated for the detection of manufacturing defects. The evaluation of these structural proof methods was performed using finite element analysis to identify the test conditions best suited for damage/defect detection. The finite element modelling was validated by structural proof tests performed on T-joint composite specimens containing the manufacturing defects of large voids, porosity and delaminations. The coupled compliance and surface strain mapping technique was able to detect a delamination crack along the stiffener-skin bond-line or a void within the fillet region when the joint was elastically loaded, but failed to detect porosity at the concentrations which typically occur in joints with defects. The MSC technique successfully detected voids, porosity and delaminations in the T-joint excited by elastic stress waves induced by random frequency vibrations.
Structural proof testing surface strain mapping mode shape curvature,composite structures defects.
A. P. Herman A. C. Orifici A. P. Mouritz
School of Aerospace Mechanical and Manufacturing Engineering, Royal Melbourne Institute of Technology, Melbourne, Victoria, 3000, Australia
国际会议
2011年亚太航空航天技术学术会议(APISAT 2011)
澳大利亚
英文
1-12
2011-02-28（万方平台首次上网日期，不代表论文的发表时间）