Tension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate

Tension-compression (T-C) fatigue response is one of the important design criteria for carbon-fibre-reinforced polymer (CFRP) material, as well as stress concentration. Hence, the objective of the current study is to investigate and quantify the stress concentration in CFRP dog-bone specimens due to...

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Autores principales:	Eldho Mathew, Rajaram Attukur Nandagopal, Sunil Chandrakant Joshi, Pinter Armando, Pasi Matteo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	tension-compression fatigue carbon fibre reinforced polymer stress concentration dog-bone specimen Technology T Science Q
Acceso en línea:	https://doaj.org/article/ff1fb410a6294c9f9fc9f76ed5f0ed6c
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spelling	oai:doaj.org-article:ff1fb410a6294c9f9fc9f76ed5f0ed6c2021-11-25T18:03:15ZTension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate10.3390/jcs51102972504-477Xhttps://doaj.org/article/ff1fb410a6294c9f9fc9f76ed5f0ed6c2021-11-01T00:00:00Zhttps://www.mdpi.com/2504-477X/5/11/297https://doaj.org/toc/2504-477XTension-compression (T-C) fatigue response is one of the important design criteria for carbon-fibre-reinforced polymer (CFRP) material, as well as stress concentration. Hence, the objective of the current study is to investigate and quantify the stress concentration in CFRP dog-bone specimens due to T-C quasi-static and fatigue loadings (with anti-buckling fixtures). Dog-bone specimens with a [(0/90),(45/−45)4]<sub>s</sub> layup were fabricated using woven CFRP prepregs and their low-cycle fatigue behaviour was studied at two stress ratios (−0.1 & −0.5) and two frequencies (3 Hz & 5 Hz). During testing, strain gauges were mounted at the centre and edge regions of the dog-bone specimens to obtain accurate, real-time strain measurements. The corresponding stresses were calculated using Young’s moduli. The stress concentration at the specimen edges, due to quasi-static tension, was significant compared to quasi-static compression loads. Furthermore, the stress concentration increased with the quasi-static loading within the elastic limit. Similarly, the stress concentration at the specimen edges, due to tensile fatigue loads, was more significant and consistent than due to compressive fatigue loads. Finally, the effects of the stress ratio and loading frequency on the stress concentration were noted to be negligible.Eldho MathewRajaram Attukur NandagopalSunil Chandrakant JoshiPinter ArmandoPasi MatteoMDPI AGarticletension-compression fatiguecarbon fibre reinforced polymerstress concentrationdog-bone specimenTechnologyTScienceQENJournal of Composites Science, Vol 5, Iss 297, p 297 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	tension-compression fatigue carbon fibre reinforced polymer stress concentration dog-bone specimen Technology T Science Q
spellingShingle	tension-compression fatigue carbon fibre reinforced polymer stress concentration dog-bone specimen Technology T Science Q Eldho Mathew Rajaram Attukur Nandagopal Sunil Chandrakant Joshi Pinter Armando Pasi Matteo Tension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate
description	Tension-compression (T-C) fatigue response is one of the important design criteria for carbon-fibre-reinforced polymer (CFRP) material, as well as stress concentration. Hence, the objective of the current study is to investigate and quantify the stress concentration in CFRP dog-bone specimens due to T-C quasi-static and fatigue loadings (with anti-buckling fixtures). Dog-bone specimens with a [(0/90),(45/−45)4]<sub>s</sub> layup were fabricated using woven CFRP prepregs and their low-cycle fatigue behaviour was studied at two stress ratios (−0.1 & −0.5) and two frequencies (3 Hz & 5 Hz). During testing, strain gauges were mounted at the centre and edge regions of the dog-bone specimens to obtain accurate, real-time strain measurements. The corresponding stresses were calculated using Young’s moduli. The stress concentration at the specimen edges, due to quasi-static tension, was significant compared to quasi-static compression loads. Furthermore, the stress concentration increased with the quasi-static loading within the elastic limit. Similarly, the stress concentration at the specimen edges, due to tensile fatigue loads, was more significant and consistent than due to compressive fatigue loads. Finally, the effects of the stress ratio and loading frequency on the stress concentration were noted to be negligible.
format	article
author	Eldho Mathew Rajaram Attukur Nandagopal Sunil Chandrakant Joshi Pinter Armando Pasi Matteo
author_facet	Eldho Mathew Rajaram Attukur Nandagopal Sunil Chandrakant Joshi Pinter Armando Pasi Matteo
author_sort	Eldho Mathew
title	Tension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate
title_short	Tension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate
title_full	Tension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate
title_fullStr	Tension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate
title_full_unstemmed	Tension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate
title_sort	tension-compression fatigue induced stress concentrations in woven composite laminate
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ff1fb410a6294c9f9fc9f76ed5f0ed6c
work_keys_str_mv	AT eldhomathew tensioncompressionfatigueinducedstressconcentrationsinwovencompositelaminate AT rajaramattukurnandagopal tensioncompressionfatigueinducedstressconcentrationsinwovencompositelaminate AT sunilchandrakantjoshi tensioncompressionfatigueinducedstressconcentrationsinwovencompositelaminate AT pinterarmando tensioncompressionfatigueinducedstressconcentrationsinwovencompositelaminate AT pasimatteo tensioncompressionfatigueinducedstressconcentrationsinwovencompositelaminate
_version_	1718411720207106048

Tension-Compression Fatigue Induced Stress Concentrations in Woven Composite Laminate

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