Technical Papers

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Damage Detection

• Continuous Monitoring of Modal Parameters to Quantify Structural Damage
• Correlating Minute Structural Faults with Changes in Modal Parameters
• Detection and Location of Structural Cracks using FRF Measurements
• Determination of Modal Sensitivity Functions for Location of Structural Faults
• Fault Detection in Structures from Changes in Their Modal Parameters

Modal Analysis

• Derivation of Mass, Stiffness and Damping Parameters From Experimental Modal Data
• Determining the Accuracy of Modal Parameter Estimation Methods
• Experimental Modal Analysis
• Identification of the Modal Properties of an Elastic Structure from Measured Transfer Function Data
• Locating Optimal References for Modal Testing
• Modal Analysis for the Connoisseur
• Modal Mass, Stiffness and Damping
• Modal Testing using Multiple References
• Virtual Experimental Modal Analysis (VEMA)
• Viscous versus Structural Damping in Modal Analysis

Modal Analysis - Curve Fitting Methods

• Complex Mode Indication Function and its Applications to Spatial Domain Parameter Estimation
• Global Curve Fitting of Frequency Response Measurements using the Rational Fraction Polynomial Method
• Global Frequency and Damping Estimates from Frequency Response Measurements
• Modal Testing using Multiple References
• The Multivariate Mode Indicator Function in Modal Analysis
• Parameter Estimation From Frequency Response Measurements using Rational Fraction Polynomials
• Parameter Estimation From Frequency Response Measurements using Rational Fraction Polynomials (20 Years of Progress)
• Post-Processing Ambient and Forced Response Bridge Data to Obtain Modal Parameters

Modal Analysis - Operational Modal

• Modal Parameter Estimation from Ambient Response Data
• Modal Parameter Estimation from Operating Data
• Post-Processing Ambient and Forced Response Bridge Data to Obtain Modal Parameters
• Scaling Mode Shapes Obtained from Operating Data
• Measurements Required for Displaying Operating Deflection Shapes

Operating Deflection Shapes

• Is it a Mode Shape, or an Operating Deflection Shape?
• Introduction to Operating Deflection Shapes
• Measuring Operating Deflection Shapes under Non-Stationary Conditions
• Obtaining Stresses and Strains from ODS Data
• On Pressure Mode Shapes Arising from Rotor/Stator Interactions
• Operating Deflection Shapes from Time Versus Frequency Domain Measurements
• Using ODS's to Detect Shaft Misalignment in Rotating Equipment

Signal Processing

• Effective Measurements for Structural Dynamics Testing (Parts 1 and 2)
• Fundamentals of the Discrete Fourier Transform
• Measurement and Analysis of the Dynamics of Mechanical Structures
• Structural Dynamics Measurements

Structural Modifications

• Comparison of Analytical and Experimental Rib Stiffener Modifications to a Structure
• Simultaneous Structural Dynamics Modification (S2DM)
• Structural Modifications Using Higher Order Elements
• Using SDM to Train Neural Networks for Solving Modal Sensitivity Problems

Finite Element Analysis

• Combined Testing and Analysis on a PC using MSC/pal and STAR
• Experimental FEA...Much More than Pretty Pictures!
• Experimental Modal Analysis, Structural Modifications and FEM Analysis on a Desktop Computer
• Mass, Stiffness and Damping Matrix Estimates from Structural Measurements
• Modal Analysis Versus Finite-Element Analysis
• Using FEA Modes to Scale Experimental Mode Shapes
• FEA Model Updating Using SDM
• FEA Using Photo Models