Výsledky vyhledávání - "Zoubir Ayadi"

Growth of interface cracks on consecutive fibers: On the same or on the opposite sides?

Autor: Zoubir Ayadi, Janis Varna, Luca Di Stasio

Publikováno v: Materials Today: Proceedings. 34:360-365

The growth of fiber/matrix interface cracks (debonds) located on consecutive fibers along the through-the-thickness (vertical) direction is studied in glass fiber-epoxy UD composites. Debonds could appear, along the vertical direction, on the same or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::841fc776e07642714275c545945609df
https://doi.org/10.1016/j.matpr.2020.06.410

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Effect of the proximity to the 0°/90° interface on Energy Release Rate of fiber/matrix interface crack growth in the 90°-ply of a cross-ply laminate under tensile loading

Autor: Luca Di Stasio, Janis Varna, Zoubir Ayadi

Publikováno v: Journal of Composite Materials. 54:3021-3034

Models of Representative Volume Elements of cross-ply laminates with different geometric configurations and damage states are studied. Debond growth is characterized by the estimation of the Mode I and Mode II Energy Release Rate using the Virtual Cr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14dc6f98de3a24ecf55ee870636674f8
https://doi.org/10.1177/0021998320912810

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Effects of inter-fiber spacing on fiber-matrix debond crack growth in unidirectional composites under transverse loading

Autor: Zoubir Ayadi, Linqi Zhuang, Janis Varna, Andrejs Pupurs, Ramesh Talreja

Publikováno v: Composites Part A: Applied Science and Manufacturing. 109:463-471

The energy release rate (ERR) of a fiber–matrix debond crack in a unidirectional composite subjected to transverse tension is studied numerically. The focus of the study is the effect of the proximity of the neighboring fibers on the ERR. For this,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a9b66d44ecad2f1b807f1bf1a9c99f26
https://doi.org/10.1016/j.compositesa.2018.03.031

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Growth and Interaction of Debonds in Local Clusters of Fibers in Unidirectional Composites during Transverse Loading

Autor: Zoubir Ayadi, Janis Varna, Linqi Zhuang, Andrejs Pupurs

Publikováno v: Key Engineering Materials. 754:63-66

Fiber/matrix debonding in transverse tensile loading of a unidirectional composite is analyzed calculating energy release rate (ERR) for interface crack propagation. Non-uniform fiber distribution (local hexagonal fiber clustering) is assumed in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f480820aa6456ab584bee6d1c6a7017b
https://doi.org/10.4028/www.scientific.net/kem.754.63

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Microcracking in thermally cycled and aged Carbon fibre/polyimide laminates

Autor: Patrik Fernberg, Zoubir Ayadi, Janis Varna, Habiba Zrida

Publikováno v: International Journal of Fatigue. 94:121-130

Carbon fibre T650 8-harness satin weave fabric composites with thermosetting polyimide resin designed for high service temperatures are solidified at 340 °C. High thermal stresses develop after cooling down to room temperature, which lead to multipl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::613f0f46632047d12c0f3abb93e068ba
https://doi.org/10.1016/j.ijfatigue.2016.09.017

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Energy release rate of the fiber/matrix interface crack in UD composites under transverse loading: Effect of the fiber volume fraction and of the distance to the free surface and to non-adjacent debonds

Autor: Zoubir Ayadi, Janis Varna, Luca Di Stasio

Publikováno v: Theoretical and Applied Fracture Mechanics
Theoretical and Applied Fracture Mechanics, Elsevier, 2019, 103, pp.102251. ⟨10.1016/j.tafmec.2019.102251⟩

The effects of crack shielding, finite thickness of the composite and fiber content on fiber/matrix debond growth in thin unidirectional composites are investigated analyzing Representative Volume ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fa494d8c380c253ff08812fd5161ced
https://hal.archives-ouvertes.fr/hal-02187506/file/S0167844219300461.pdf

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Energy release rate of the fiber/matrix interface crack in UD composites under transverse loading: debond-debond and debond-free boundary interactions

Autor: Luca Di Stasio, Janis Varna, Zoubir Ayadi

The effects of crack shielding, finite thickness of the composite and fiber content on fiber/matrix debond growth in thin unidirectional composites are investigated analyzing Representative Volume Elements (RVEs) of different ordered microstructures.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cf86a289fe42999cecb786359e360ae
https://engrxiv.org/z76j8

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Energy release rate of fiber/matrix interface crack growth in cross-ply laminates under transverse loading: effect of the 0° /90° interface and of 0° layer thickness

Autor: Luca Di Stasio, Janis Varna, Zoubir Ayadi

Models of Representative Volume Elements (RVEs) of cross-ply laminates with different geometric configurations and damage states are studied. Debond growth is characterized by the estimation of the Mode I and Mode II Energy Release Rate (ERR) using t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd08de16c2bc0d3a8163ab5a4295373c
https://hal.archives-ouvertes.fr/hal-02187431/document

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Fiber/matrix debond growth from fiber break in unidirectional composite with local hexagonal fiber clustering

Autor: Janis Varna, Linqi Zhuang, Zoubir Ayadi, Andrejs Pupurs

Publikováno v: Composites Part B: Engineering. 101:124-131

Energy release rate (ERR) for fiber/matrix debonding in composite with local fiber clustering, subjected to axial tension, has been investigated numerically by a 3-D finite element (FE) model. In t ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cc4c89195a2b6956a6dc5455eac70378
https://doi.org/10.1016/j.compositesb.2016.07.005

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