Displacement based approach for a robust operational modal analysis

G De Canio, P Andersen, I Roselli, M Mongelli… - … and Special Topics …, 2011 - Springer
Robust estimation of the dynamic modal parameters of structures during shaking table
experiments is done by means of efficient time domain data-driven Crystal Clear Stochastic …

Effect of nonlinear parametric model accuracy in crack prediction and detection

TA Doughty, NS Higgins - … Applied Mechanics, Volume 6: Proceedings of …, 2011 - Springer
The use of nonlinear system identification has been applied to predicting and tracking
cracks as they form and propagate through a vibrating cantilevered beam. Continuous Time …

Experimental validation of nonlinear model tracking with varying conditions

TA Doughty, AW Belle-Isle, N Pendowski - … of the 34th IMAC, A Conference …, 2016 - Springer
Mechanical systems can be described with models involving mass, damping, stiffness and
nonlinear parameters, albeit with varying complexity. With known healthy model values …

Nonlinear model tracking for varying system geometries

TA Doughty, MR Dally, MR Bacon, NG Etzel - Special Topics in Structural …, 2013 - Springer
Although linear models can successfully explain many behaviors for physical systems, they
are unable to describe the complexities of nonlinear systems. Therefore, health monitoring …

Implementing Noise, Multi-Frequency Stimulus, and Realtime Analysis to Nonlinear Model Tracking

TA Doughty, LJ Cassidy, SM Danforth - … 8: Proceedings of the 2016 Annual …, 2017 - Springer
Crack initiation in a cantilevered beam subject to harmonic excitation near the beam's
second natural frequency has been determined using Nonlinear Model Tracking (NMT), a …

Monitoring the Health of a Cantilever Beam Using Nonlinear Modal Tracking

TA Doughty, AK Blaser, JR Johnston - … , Volume 7: Proceedings of the 35th …, 2017 - Springer
Cantilever beams can often be used as representative models for more complex systems
and can accurately display the expected behavior of these systems under different loads …

Varied System Geometry and Noise Implementation Applied to Nonlinear Model Tracking

TA Doughty, LJ Cassidy… - ASME …, 2016 - asmedigitalcollection.asme.org
The following is a study in nondestructive health monitoring wherein the physical system
being studied is excited near resonance and mapped through its transition from health to …

Numerical Enhancement of NMT for Predicting Fatigue Failure

TA Doughty, MR Dally, MR Bacon - … , Volume 5: Proceedings of the 32nd …, 2014 - Springer
Abstract Nonlinear Model Tracking (NMT) has been shown to be a robust method for
predicting failure through nondestructive health monitoring. The method has been applied to …

Nonlinear Parameteric Health Monitoring for Vibrating Structures Under Non-Stationary Excitation

TA Doughty, NS Higgins - … , Instrumentation and Special Topics, Volume 6 …, 2011 - Springer
Nonlinear system identification has been used to predict and monitor cracks as they form,
propagate, and eventually cause the catastrophic failure of a vibrating cantilevered beam …