Academic Journals Database
Disseminating quality controlled scientific knowledge

On the Robustness of the Minkowski Distance for Histogram Dissimilarity Evaluation with Focus on Damage Location in Beam-Like Structural Elements

Author(s): Petru-Florin Minda | Nicoleta Gillich | Carla Protocsil | Peter Lorenz | Gilbert-Rainer Gillich | Florian Muntean

Journal: Analele Universităţii Eftimie Murgu Reşiţa. Fascicula de Inginerie
ISSN 1453-7397

Volume: XX;
Issue: 3;
Start page: 179;
Date: 2013;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: beam | frequency | damage detection | histogram | Minkowski Distance

This paper analyses the robustness of a histogram dissimilarity estimator, namely the Minkowski Distance, and its sensitivity to input/ measurement errors. As a result of prior researches we developed a method to detect, locate and assess damages in beams, based on frequency shifts. The localization process consists in fact in comparing a histogram derived from vibration measurements, with numerous histograms representing the damage signature for all possible locations along the beam. We tested the stability of Minkowski Distance L2, for frequencies measured on real beams; other tests were made for results artificially debased by noise. In all cases this metrics proved its robustness and reliability.

Tango Rapperswil
Tango Rapperswil

RPA Switzerland

Robotic Process Automation Switzerland