Technical Papers

Operating Deflection Shapes




Modal Analysis




Modal Parameter Estimation – Curve Fitting Methods




Operational Modal Analysis




Signal Processing




Rotating Machine Surveillance




Structural Dyamics Modification




Damage Detection




Experimental Finite Element Analysis


01 – Operating Deflection Shapes From Time Versus Frequency Domain Measurements

02 – Using SDM to Train Neural Networks for Solving Modal Sensitivity Problems

03 – Mass, Stiffness, And Damping Matrices From Measured Modal Parameters

04 – Measurement And Analysis Of The Dynamics Of Mechanical Structures

05 – Global Curve Fitting of Frequency Response Measurements using the Rational Fraction Polynomial Method

06 – Global Frequency & Damping Estimates From Frequency Response Measurements

07 – Parameter Estimation From Frequency Response Measurements Using Rational Fraction Polynomials

08 – Structural Modifications Using Higher Order Elements

09 – Fundamentals of the Discrete Fourier Transform

10 – Is It a Mode Shape or an Operating Deflection Shape?

11 – Virtual Experimental Modal Analysis (VEMA)

12A – Effective Measurements for Structural Dynamics Testing (PART I)

12B – Effective Measurements for Structural Dynamics Testing (PART II)

13 – Identification of the Modal Properties of an Elastic Structure from Measured Transfer Function Data

14 – Comparison Of Analytical And Experimental Rib Stiffener Modifications To A Structure

15 – Mass, Stiffness, and Damping Matrix Estimates from Structural Measurements

16 – Structural Dynamics Measurements

17 – Complex Mode Indication Function and its Applications to Spatial Domain Parameter Estimation

18 – Detection and Location of Structural Cracks using FRF Measurements

19 – Determination of Modal Sensitivity Functions for Location of Structural Faults

20 – Correlating Minute Structural Faults With Changes In Modal Parameters

21 – Continuous Monitoring of Modal Parameters to Quantify Structural Damage

22 – Determining the Accuracy of Modal Parameter Estimation Methods

23 – Modal Testing using Multiple References

24 – Fault Detection in Structures from Changes in Their Modal Parameters

25 – Experimental Modal Analysis, Structural Modifications and FEM Analysis on a Desktop Computer

26 – Combined Testing and Analysis on a PC using MSC/pal and STAR

27 – Simultaneous Structural Dynamics Modification (S2DM)

28 – Experimental Modal Analysis

29 – Introduction To Operating Deflection Shapes

30 – Derivation of Mass, Stiffness and Damping Parameters from Experimental Modal Data

31 – Modal Mass, Stiffness And Damping

32 – Measuring Operating Deflection Shapes Under Non-Stationary Conditions

33 – Modal Parameter Estimation From Ambient Response Data

34 – Post-Processing Ambient And Forced Response Bridge Data To Obtain Modal Parameters

35 – The Multivariate Mode Indicator Function In Modal Analysis

36 – Viscous vs. Structural Damping in Modal Analysis

37 – Modal Analysis for the Connoisseur

38 – Locating Optimal References For Modal Testing

39 – Parameter Estimation From Frequency Response Measurements Using Rational Fraction Polynomials (Twenty Years of Progress)

40 – Scaling Mode Shapes Obtained From Operating Data

41 – Obtaining Stresses And Strains From ODS Data

42 – Modal Parameter Estimation from Operating Data

43 – Measurements Required for Displaying Operating Deflection Shapes

44 – Experimental FEA . . . Much More Than Pretty Pictures!

45 – On Pressure Mode Shapes Arising from Rotor/Stator Interactions

46 – Using FEA Modes to Scale Experimental Mode Shapes

47 – Modal Analysis versus Finite-Element Analysis

48 – FEA Model Updating Using SDM

49 – Using a De-Convolution Window for Operating Modal Analysis

50 – Using Photo Modeling to Obtain the Modes of a Structure

51 – Using Operating Deflection Shapes to Detect Misalignment in Rotating Equipment

52 – Using Operating Deflection Shapes to Detect Unbalance in Rotating Equipment

53 – Using Impulse Response Functions to Evaluate Baseball Bats

54 – Using Operating Deflection Shapes to Detect Faults in Rotating Equipment

55 – Aliasing in Modal Parameter Estimation. An Historical Look and New Innovations

56 – Matrix formulation of Multiple and Partial Coherence

57 – Measuring Linear Systems Parameters Single Input/Output Transfer and Coherence Functions

58 – A New Measure of Shape Difference

59 – Simulating Base-Shake Environmental Testing

60 – Modes Indicate Cracks in Wind Turbine Blades

61 – Proportional Damping from Experimental Data

62 – Linear Superposition and Modal Participation

63 – Using Modal Parameters for Structural Health Monitoring

64 – Compilation of Windows and Line Shapes for Fourier Analysis

65 – Using Mode Shapes for Real Time ODS Animation

66 – Calculating Stress & Strain from Experimental ODS Data

67 – Curve Fitting Analytical Mode Shapes to Experimental Data

68 – Using Operating Data to Locate & Quantify Unbalance in Rotating Machinery