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Preface; Contents; 1 Scaling up of the Impedance-Matched Multi-Axis Test (IMMAT) Technique; 1.1 Introduction; 1.2 The Modal Analysis Test Vehicle; 1.3 Gathering the "Truth Data"; 1.4 Deriving a Test Specification (Target Spectra) for an IMMAT Test; 1.5 Planning the IMMAT Test; 1.6 The IMMAT Test; 1.7 Results and Discussion; 1.7.1 Test 1; 1.7.2 Test 2; 1.8 Conclusions; References; 2 6-DOF Shaker Test Input Derivation from Field Test; 2.1 Introduction; 2.1.1 Overall Concept; 2.2 Deriving the Transmissibility Function; 2.3 Deriving the 6-DOF Shaker Table Input Given Flight Data
2.3.1 Method 1: PINV2.3.2 Method 2: ZINV; 2.3.3 Method 3: Scaling; 2.3.4 Method 4: Smallwood-Cap; 2.4 Comparison Metric for Methods; 2.4.1 Comparison of Inputs; 2.4.2 Comparison of Predicted Responses to Actual Field Responses; 2.5 Conclusions; References; 3 Frequency Based Spatial Damping Identification-Theoretical and Experimental Comparison; 3.1 Introduction; 3.2 Theoretical Background; 3.3 Experiments; 3.3.1 Measurement Setup; 3.4 Analysis and Discussion; 3.4.1 Modal Incompleteness; 3.4.2 Spatial Incompleteness; 3.4.3 Damping Treatment Effect on Spatial Location; 3.5 Conclusion
5.1 Introduction5.1.1 Motivation; 5.1.2 Dynamic Model and System Input-Output Theory; 5.2 Background; 5.2.1 Video Processing: Automated Video Extraction; 5.2.2 Regularization Methods; 5.3 Experimental Setup; 5.3.1 Laboratory Setup; 5.3.2 Establishing Dynamic Model; 5.3.3 Inverse Load ID; 5.4 Results; 5.4.1 FEA Model; 5.4.2 Inverse Load ID; 5.5 Conclusion; References; 6 Research of Under-Sampling Technique for Digital Image Correlation in Vibration Measurement; 6.1 Introduction; 6.2 Estimate Depth of Workpiece with a Stereo Camera; 6.3 Undersampling Technique; 6.4 Timestamp Optimization
6.5 Experimental Verification6.6 Conclusion; References; 7 Nonlinear Dynamic Analysis of a Thermally Buckled Aircraft Panel Using NNMs; 7.1 Introduction; 7.2 Theoretical Development; 7.2.1 Review of Reduced Order Modeling; 7.2.2 Review of Nonlinear Normal Modes; 7.3 Application to FE of an Aircraft Ramp Panel; 7.4 Conclusions; 7.5 Future Work; References; 8 Empirically-Derived, Constitutive Damping Model for Cellular Silicone; Nomenclature; 8.1 Background; 8.2 Experiment; 8.2.1 Test Fixture Design; 8.2.2 Test Set-Up; 8.2.3 Linear Modal Analysis Results
2.3.1 Method 1: PINV2.3.2 Method 2: ZINV; 2.3.3 Method 3: Scaling; 2.3.4 Method 4: Smallwood-Cap; 2.4 Comparison Metric for Methods; 2.4.1 Comparison of Inputs; 2.4.2 Comparison of Predicted Responses to Actual Field Responses; 2.5 Conclusions; References; 3 Frequency Based Spatial Damping Identification-Theoretical and Experimental Comparison; 3.1 Introduction; 3.2 Theoretical Background; 3.3 Experiments; 3.3.1 Measurement Setup; 3.4 Analysis and Discussion; 3.4.1 Modal Incompleteness; 3.4.2 Spatial Incompleteness; 3.4.3 Damping Treatment Effect on Spatial Location; 3.5 Conclusion
5.1 Introduction5.1.1 Motivation; 5.1.2 Dynamic Model and System Input-Output Theory; 5.2 Background; 5.2.1 Video Processing: Automated Video Extraction; 5.2.2 Regularization Methods; 5.3 Experimental Setup; 5.3.1 Laboratory Setup; 5.3.2 Establishing Dynamic Model; 5.3.3 Inverse Load ID; 5.4 Results; 5.4.1 FEA Model; 5.4.2 Inverse Load ID; 5.5 Conclusion; References; 6 Research of Under-Sampling Technique for Digital Image Correlation in Vibration Measurement; 6.1 Introduction; 6.2 Estimate Depth of Workpiece with a Stereo Camera; 6.3 Undersampling Technique; 6.4 Timestamp Optimization
6.5 Experimental Verification6.6 Conclusion; References; 7 Nonlinear Dynamic Analysis of a Thermally Buckled Aircraft Panel Using NNMs; 7.1 Introduction; 7.2 Theoretical Development; 7.2.1 Review of Reduced Order Modeling; 7.2.2 Review of Nonlinear Normal Modes; 7.3 Application to FE of an Aircraft Ramp Panel; 7.4 Conclusions; 7.5 Future Work; References; 8 Empirically-Derived, Constitutive Damping Model for Cellular Silicone; Nomenclature; 8.1 Background; 8.2 Experiment; 8.2.1 Test Fixture Design; 8.2.2 Test Set-Up; 8.2.3 Linear Modal Analysis Results