Numerical evaluations of strain field modification induced by production flaws in loaded composite structures

Structural health monitoring (SHM) involves observation and analysis of a system over time using periodically sampled response measurements to monitor the initiation and propagation of a flaw. The article is focused on finite element (FE) modelling of strain field modification induced by flaws in lo...

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Autores principales:	Raška Jan, Vlach Jarmil, Horňas Jan
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/bce34c3a9fde43a092c212e32f50e9cf
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id	oai:doaj.org-article:bce34c3a9fde43a092c212e32f50e9cf
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spelling	oai:doaj.org-article:bce34c3a9fde43a092c212e32f50e9cf2021-12-02T17:13:46ZNumerical evaluations of strain field modification induced by production flaws in loaded composite structures2261-236X10.1051/matecconf/202134901013https://doaj.org/article/bce34c3a9fde43a092c212e32f50e9cf2021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_01013.pdfhttps://doaj.org/toc/2261-236XStructural health monitoring (SHM) involves observation and analysis of a system over time using periodically sampled response measurements to monitor the initiation and propagation of a flaw. The article is focused on finite element (FE) modelling of strain field modification induced by flaws in loaded composite structures. Shape of the current production flaw – delamination – was idealised as square with a side of 1 inch. One flaw per laminate in several positions in the layup was considered. The pristine structure was modelled with one element per thickness. For delaminated zone in the centre, the twin coincident elements per thickness were adopted: first element to simulate the lay-up from bottom to delamination, second from delamination to top. The loads and the boundary conditions of the FE model were issued from the tests, based on the ASTM standards: tension test – ASTM D3039, compression after impact test – ASTM D7137 and 4-point bending test – ASTM D7264. Generally, the strain modification is stronger for the delamination near the surface than for the delamination deep in the structure.Raška JanVlach JarmilHorňas JanEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 349, p 01013 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Raška Jan Vlach Jarmil Horňas Jan Numerical evaluations of strain field modification induced by production flaws in loaded composite structures
description	Structural health monitoring (SHM) involves observation and analysis of a system over time using periodically sampled response measurements to monitor the initiation and propagation of a flaw. The article is focused on finite element (FE) modelling of strain field modification induced by flaws in loaded composite structures. Shape of the current production flaw – delamination – was idealised as square with a side of 1 inch. One flaw per laminate in several positions in the layup was considered. The pristine structure was modelled with one element per thickness. For delaminated zone in the centre, the twin coincident elements per thickness were adopted: first element to simulate the lay-up from bottom to delamination, second from delamination to top. The loads and the boundary conditions of the FE model were issued from the tests, based on the ASTM standards: tension test – ASTM D3039, compression after impact test – ASTM D7137 and 4-point bending test – ASTM D7264. Generally, the strain modification is stronger for the delamination near the surface than for the delamination deep in the structure.
format	article
author	Raška Jan Vlach Jarmil Horňas Jan
author_facet	Raška Jan Vlach Jarmil Horňas Jan
author_sort	Raška Jan
title	Numerical evaluations of strain field modification induced by production flaws in loaded composite structures
title_short	Numerical evaluations of strain field modification induced by production flaws in loaded composite structures
title_full	Numerical evaluations of strain field modification induced by production flaws in loaded composite structures
title_fullStr	Numerical evaluations of strain field modification induced by production flaws in loaded composite structures
title_full_unstemmed	Numerical evaluations of strain field modification induced by production flaws in loaded composite structures
title_sort	numerical evaluations of strain field modification induced by production flaws in loaded composite structures
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/bce34c3a9fde43a092c212e32f50e9cf
work_keys_str_mv	AT raskajan numericalevaluationsofstrainfieldmodificationinducedbyproductionflawsinloadedcompositestructures AT vlachjarmil numericalevaluationsofstrainfieldmodificationinducedbyproductionflawsinloadedcompositestructures AT hornasjan numericalevaluationsofstrainfieldmodificationinducedbyproductionflawsinloadedcompositestructures
_version_	1718381342746476544

Numerical evaluations of strain field modification induced by production flaws in loaded composite structures

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