TY - JOUR
T1 - Theoretical analysis of mechanical properties in natural fibres under quasi-static load
T2 - a case study of Ichu and Cabuya
AU - Teves, Alfredo
AU - Candiotti, Sergio
AU - Santiuste, Carlos
AU - Charca, Samuel
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
PY - 2024/1
Y1 - 2024/1
N2 - Natural fibres are gradually replacing glass fibres in textile products or wind turbines blades. Stipa Obtusa (Ichu) and Furcraea (Cabuya) are two endemic plants that abound in the highland Andean areas and they could be used as reinforcements; however, there is missing information about their anisotropic behaviour. This study aims to predict the elastic constants of these two fibres based on the results of unidirectional tensile tests using an elasticity-based model. The latter was employed to calculate the average S2 layer microfibril angle for Ichu and Cabuya: 23.10° and 18.98°, respectively; and predict the longitudinal elastic constant, using four different finite-element arrangements, with mean errors of 11% and 5.5% for Ichu and Cabuya, respectively. Besides, the inclusion of geometrical and chemical variables such as the crystallinity index and the MFA in the model helped predict the stiffness matrices of Ichu and Cabuya. This could help researchers in modelling bio-sourced composites RVE’s employing simplified models.
AB - Natural fibres are gradually replacing glass fibres in textile products or wind turbines blades. Stipa Obtusa (Ichu) and Furcraea (Cabuya) are two endemic plants that abound in the highland Andean areas and they could be used as reinforcements; however, there is missing information about their anisotropic behaviour. This study aims to predict the elastic constants of these two fibres based on the results of unidirectional tensile tests using an elasticity-based model. The latter was employed to calculate the average S2 layer microfibril angle for Ichu and Cabuya: 23.10° and 18.98°, respectively; and predict the longitudinal elastic constant, using four different finite-element arrangements, with mean errors of 11% and 5.5% for Ichu and Cabuya, respectively. Besides, the inclusion of geometrical and chemical variables such as the crystallinity index and the MFA in the model helped predict the stiffness matrices of Ichu and Cabuya. This could help researchers in modelling bio-sourced composites RVE’s employing simplified models.
KW - Finite element analysis (FEA)
KW - Micro-mechanics
KW - Modelling of materials
KW - Organic materials
UR - http://www.scopus.com/inward/record.url?scp=85178955309&partnerID=8YFLogxK
U2 - 10.1007/s00339-023-07154-3
DO - 10.1007/s00339-023-07154-3
M3 - Article
AN - SCOPUS:85178955309
SN - 0947-8396
VL - 130
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 1
M1 - 9
ER -