Topological derivative methods for damage detection

Martinez Dominguez, Anjo and Gümes Gordo, Alfredo and Perales Perales, José Manuel and Vega de Prada, J.M. (2018). Topological derivative methods for damage detection. In: "9th European Workshop on Structural Health Monitoring (EWSHM 2018)", 10-13 Jul., Manchester, Reino Unido. pp. 601-613.

Description

Title: Topological derivative methods for damage detection
Author/s:
  • Martinez Dominguez, Anjo
  • Gümes Gordo, Alfredo
  • Perales Perales, José Manuel
  • Vega de Prada, J.M.
Item Type: Presentation at Congress or Conference (Article)
Event Title: 9th European Workshop on Structural Health Monitoring (EWSHM 2018)
Event Dates: 10-13 Jul.
Event Location: Manchester, Reino Unido
Title of Book: 9th European Workshop on Structural Health Monitoring (EWSHM 2018)
Date: 2018
Subjects:
Freetext Keywords: Data processing, defects, novel techniques, propagagation and scattering
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Matemática Aplicada a la Ingeniería Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper deals with the use of the topological derivative as a structural health monitoringmethod, for locating the presence of flaws in an aluminium plate. By minimizing a scalar ob-jective function that measures the least squares difference between the measured and calculatedsignals, flaws can be detected. The topological derivative somehow describes the sensitivity ofthe objective function to localized perturbations of the material properties due to the defectspresence. Here, we reconstruct small defects via the topological derivative by using multi-frequency synthetic data, for several representative configurations of the actuators and sensors,and several defect locations. Among these, some fairly demanding configurations are consideredthat are not accessible to conventional methods, such as actuators and sensors located very closeto the plate boundary and defects located beyond both elongated through-slits and elongatedinclusions of a different material.

More information

Item ID: 61370
DC Identifier: https://oa.upm.es/61370/
OAI Identifier: oai:oa.upm.es:61370
Deposited by: Memoria Investigacion
Deposited on: 04 Feb 2021 11:46
Last Modified: 04 Feb 2021 11:46
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