Structural damage detection of space truss structures using best achievable eigenvectors

Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: A literature review

“…The magnitude of the damage is then computed using the eigenstructure assignment technique such that the best achievable eigenvectors, undamaged model matrices, and controller satisfy the modal force error equation. Lim and Kashangaki (1994) introduce the use of the best achievable eigenvectors-for the location of structural damage and apply the technique to the detection of damage in an 8-bay cantilevered truss.…”

Mistuning identification for industrial blisks based on the best achievable eigenvector

“…The procedure is similar to model updating techniques. The method proposed to identify mistuning parameters is based on the Best Achievable Eigenvectors [26][27]. This approach uses an eigenvalue assignment technique combined with a regularization technique and consists in a projection of the measured eigenvectors on a subspace spanned by the perturbed model; this improves the representativeness of the measured modes and limits the influence of measurement errors .…”

“…Assuming that global measurements are available, an updating procedure of a reduced-order model of an industrial blisk is performed. The measured modes are treated simultaneously using the "Best Achievable Eigenvector" in combination with a regulation technique [26][27]. First, the reduced order modeling technique used in the mistuning identification method will be briefly presented.…”

Identification of damage-expected members of truss structures using frequency response function

“…Liu et al 7 presented a damage detection method using the square difference in the elemental modal strain. Lim and Kashangaki 8 provided a damage detection method by comparing the Euclidean distances between the measured mode shapes and the best achievable eigenvectors that are the projection of the measured mode shapes onto the subspace. Yang and Jin 9 considered a damage detection method to identify damages of truss structures by changes in the first few natural frequencies between undamaged and damaged states.…”