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Towards airborne laser Doppler vibrometry for structural health monitoring of large and curved structures

Schewe, Marvin and Ismail, Mohamed AA and Rembe, Christian (2021) Towards airborne laser Doppler vibrometry for structural health monitoring of large and curved structures. Insight, 63 (5), pp. 280-282. The British Institute of Non-Destructive Testing. doi: 10.1784/insi.2021.63.5.280. ISSN 1354-2575.

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Official URL: https://www.ingentaconnect.com/content/bindt/insight/2021/00000063/00000005/art00005;jsessionid=146xp9a4vznt8.x-ic-live-03

Abstract

Laser Doppler vibrometry is an important sensing technology for many structural health monitoring (SHM) methods, such as modal analysis. However, when it comes to large civil structures, for example historic structures and bridges, the applicability of laser Doppler vibrometry is significantly constrained by inaccessible remote surfaces. Some of these surfaces are fully inaccessible to a ground-mounted laser Doppler vibrometer (LDV), while others are partially inaccessible, and measurements are only possible for low incident angles. Consequently, LDV measurements are either impossible or have a weak signal strength. In this study, the concept of constructing an airborne LDV for SHM is explored, including the examination of a recently developed mechanism, the partially airborne LDV, comprising a reflective mirror attached to a drone. Preliminary proof of concept laboratory tests have been successfully conducted using two different set-ups and drone models.

Item URL in elib:https://elib.dlr.de/144051/
Document Type:Article
Title:Towards airborne laser Doppler vibrometry for structural health monitoring of large and curved structures
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schewe, Marvinrembe (at) iei.tu-clausthal.deUNSPECIFIED
Ismail, Mohamed AAMohamed.Ismail (at) dlr.dehttps://orcid.org/0000-0002-2077-0681
Rembe, Christianschewe (at) iei.tu-clausthal.deUNSPECIFIED
Date:7 May 2021
Journal or Publication Title:Insight
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:63
DOI :10.1784/insi.2021.63.5.280
Page Range:pp. 280-282
Publisher:The British Institute of Non-Destructive Testing
ISSN:1354-2575
Status:Published
Keywords:laser Doppler vibrometry, structural health monitoring, vibration analysis, drones
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Aircraft Systems
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems
Institute of Flight Systems > Safety Critical Systems&Systems Engineering
Deposited By: Ismail, Dr. Mohamed AA
Deposited On:07 Dec 2021 15:52
Last Modified:07 Dec 2021 15:52

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