AIAA Journal · 1975 · 27 citations · 0 references
EngineeringMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsStructural EngineeringStructural MaterialsBuckling AnalysisComposite Structure AnalysisShell AnalysisStructural DesignStructural Performance AnalysisStructural Response AnalysisAnisotropic ShellsBuckling BehaviorCompression BucklingImperfection SensitivityNondestructive AnalysisNondestructive TestingNondestructive Testing Of MaterialsPanel Buckling
Ten different orientation arrangements (in various panel thicknesses) were used in fabricating 72 panels. Eighty-four tests were performed, and the range of R/t studied was 100 to 400. All specimens had a 12-in. outside radius and were 13-in. long by 9-in. wide. The results included development of the moire grid-shadow technique and the South well plot method for nondestructive testing as well as observations of the effects of orientation and R/t on the buckling behavior and imperfection sensitivity of such shells. Satisfactory correlation was obtained with a laminated anisotropic curved panel analysis using the Rayleigh-Ritz energy method, which included a crude assumption that the thickness variations in the panels could be used to measure imperfection amplitude.