[HTML][HTML] Closed-loop load vectors for structural damage localization

MD Ulriksen, M Jepsen, D Bernal - Mechanical Systems and Signal …, 2023 - Elsevier
The null vectors of a rank-deficient transfer matrix perturbation contain information on the
spatial distribution of the perturbation. This property constitutes the basis of the well …

Closed‐loop experimental testing framework for structural control applications

S Pedersen, MD Ulriksen - Structural Control and Health …, 2021 - Wiley Online Library
Within civil engineering, the inclusion of control strategies is confined to limited application
areas due to the practical overhead and an alleged conservatism. This paper presents a …

Damage localization through assignment of invariant eigenpairs

MD Ulriksen, E Memarzadeh, D Bernal… - European Workshop on …, 2022 - Springer
The present paper reviews a method based on output feedback eigenstructure assignment
for locating damage in minimum-phase structural systems with measurable input and output …

Physical and virtual implementation of closed-loop designs for model updating

MS Jensen, TN Hansen, MD Ulriksen… - Proceedings of the 13th …, 2020 - Springer
A recently proposed virtual implementation of output feed-back based on signal processing
eliminates the practical overhead associated with physical operation in closed loop …

On gain design in virtual output feedback for model updating

MD Ulriksen, D Bernal - Proceedings of the 13th International Conference …, 2020 - Springer
The set of equations to be solved for parameter estimation in model updating has no unique
solution when, as will often be the case in structural applications, the dimensionality of the …

On the model order in parameter estimation using virtual compensators

TN Hansen, MS Jensen, MD Ulriksen… - Proceedings of the 13th …, 2020 - Springer
Processing signals from open-loop system realizations can replace real-time operation
using actuators in the design of closed-loop eigenstructures. One merit of the signal …

Damage detection under temperature variability using closed-loop mode shapes

BA Qadri, AS Kristensen, MD Ulriksen - 2020 - engrxiv.org
The dynamic characteristics of any structural system depend on the temperature. This poses
a challenge in vibration-based damage detection, as temperature variability can mask …

Closed-Loop Damage-Locating Vectors

M Jepsen, MD Ulriksen, D Bernal - European Workshop on Structural …, 2022 - Springer
The present paper considers localization of stiffness-related damage in minimum-phase
structural systems for which input and output data is collected both prior and posterior to …

Invariant Eigenvalue Assignment and Uncertainty Quantification for Damage Localization

M Ulriksen, S Gres, PZ Nieto, MB Dahl… - Available at SSRN … - papers.ssrn.com
A direct scheme is presented for static output feedback assignment and uncertainty
quantification of perturbation-invariant eigenvalues in controllable and observable linear …

[PDF][PDF] Structural damage detection under temperature variability using closed-loop mode shapes

BA Qadri, AS Kristensen, MD Ulriksen - researchgate.net
The dynamic characteristics of any structural system depend on the temperature. This poses
a challenge in vibration-based damage detection, as temperature variability can mask …