Development of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions

An idealized 1:2 scale demonstrator and a numerical parameter optimization algorithm are proposed to closely reproduce the deformation shape and, thus, spatial strain directions of a real aerodynamically loaded civil aircraft spoiler using only four concentrated loads. Cost-efficient experimental st...

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Autores principales:	Markus Winklberger, Christoph Kralovec, Martin Schagerl
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	aircraft spoiler demonstrator experimental strain analysis quasi-realistic loading SHM composite sandwich Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/a0738a4bc977408aae3466871b8b70e6
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spelling	oai:doaj.org-article:a0738a4bc977408aae3466871b8b70e62021-11-25T15:57:12ZDevelopment of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions10.3390/aerospace81103202226-4310https://doaj.org/article/a0738a4bc977408aae3466871b8b70e62021-10-01T00:00:00Zhttps://www.mdpi.com/2226-4310/8/11/320https://doaj.org/toc/2226-4310An idealized 1:2 scale demonstrator and a numerical parameter optimization algorithm are proposed to closely reproduce the deformation shape and, thus, spatial strain directions of a real aerodynamically loaded civil aircraft spoiler using only four concentrated loads. Cost-efficient experimental studies on demonstrators of increasing complexity are required to transfer knowledge from coupons to full-scale structures and to build up confidence in novel structural health monitoring (SHM) technologies. Especially for testing novel sensor systems that depend on or are affected by mechanical strains, e.g., strain-based SHM methods, it is essential that the considered lab-scale structures reflect the strain states of the real structure at operational loading conditions. Finite element simulations with detailed models were performed for static strength analysis and for comparison to experimental measurements. The simulated and measured deformations and spatial strain directions of the idealized demonstrator correlated well with the numerical results of the real aircraft spoiler. Thus, using the developed idealized demonstrator, strain-based SHM systems can be tested under conditions that reflect operational aerodynamic pressure loads, while the test effort and costs are significantly reduced. Furthermore, the presented loading optimization algorithm can be easily adapted to mimic other pressure loads in plate-like structures to reproduce specific structural conditions.Markus WinklbergerChristoph KralovecMartin SchagerlMDPI AGarticleaircraft spoilerdemonstratorexperimental strain analysisquasi-realistic loadingSHMcomposite sandwichMotor vehicles. Aeronautics. AstronauticsTL1-4050ENAerospace, Vol 8, Iss 320, p 320 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	aircraft spoiler demonstrator experimental strain analysis quasi-realistic loading SHM composite sandwich Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	aircraft spoiler demonstrator experimental strain analysis quasi-realistic loading SHM composite sandwich Motor vehicles. Aeronautics. Astronautics TL1-4050 Markus Winklberger Christoph Kralovec Martin Schagerl Development of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions
description	An idealized 1:2 scale demonstrator and a numerical parameter optimization algorithm are proposed to closely reproduce the deformation shape and, thus, spatial strain directions of a real aerodynamically loaded civil aircraft spoiler using only four concentrated loads. Cost-efficient experimental studies on demonstrators of increasing complexity are required to transfer knowledge from coupons to full-scale structures and to build up confidence in novel structural health monitoring (SHM) technologies. Especially for testing novel sensor systems that depend on or are affected by mechanical strains, e.g., strain-based SHM methods, it is essential that the considered lab-scale structures reflect the strain states of the real structure at operational loading conditions. Finite element simulations with detailed models were performed for static strength analysis and for comparison to experimental measurements. The simulated and measured deformations and spatial strain directions of the idealized demonstrator correlated well with the numerical results of the real aircraft spoiler. Thus, using the developed idealized demonstrator, strain-based SHM systems can be tested under conditions that reflect operational aerodynamic pressure loads, while the test effort and costs are significantly reduced. Furthermore, the presented loading optimization algorithm can be easily adapted to mimic other pressure loads in plate-like structures to reproduce specific structural conditions.
format	article
author	Markus Winklberger Christoph Kralovec Martin Schagerl
author_facet	Markus Winklberger Christoph Kralovec Martin Schagerl
author_sort	Markus Winklberger
title	Development of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions
title_short	Development of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions
title_full	Development of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions
title_fullStr	Development of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions
title_full_unstemmed	Development of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions
title_sort	development of aircraft spoiler demonstrators for cost-efficient investigations of shm technologies under quasi-realistic loading conditions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a0738a4bc977408aae3466871b8b70e6
work_keys_str_mv	AT markuswinklberger developmentofaircraftspoilerdemonstratorsforcostefficientinvestigationsofshmtechnologiesunderquasirealisticloadingconditions AT christophkralovec developmentofaircraftspoilerdemonstratorsforcostefficientinvestigationsofshmtechnologiesunderquasirealisticloadingconditions AT martinschagerl developmentofaircraftspoilerdemonstratorsforcostefficientinvestigationsofshmtechnologiesunderquasirealisticloadingconditions
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Development of Aircraft Spoiler Demonstrators for Cost-Efficient Investigations of SHM Technologies under Quasi-Realistic Loading Conditions

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