Simulation of the forming of tufted multilayer composite preforms

Published on Sep 1, 2021in Composites Part B-engineering7.635
· DOI :10.1016/J.COMPOSITESB.2021.108981
Jin Huang1
Estimated H-index: 1
(University of Lyon),
Philippe Boisse49
Estimated H-index: 49
(University of Lyon),
Nahiene Hamila20
Estimated H-index: 20
(CNRS: Centre national de la recherche scientifique)
Source
Abstract
Abstract Tufting of preforms increases the resistance of the laminated composites to delamination. Draping of the preforms is clearly modified by the presence of tufting threads. A simulation approach for the forming of tufted textile reinforcement stacks is proposed. It determines the state of the tufted preforms after forming and in particular the possible wrinkles. The layers of textile reinforcements are modeled by stress resultant shells. Tufting threads are modeled by rod chains that can slide with friction relative to the textile reinforcements. The geometry of these rod elements is enhanced by a description of Hermite and the bending of the threads is taken into account through the position of neighboring elements. The approach accurately simulates the forming of tufted preforms and in particular the wrinkles that are observed in the forming experiments.
References41
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#1Kundan K. VermaH-Index: 6
#2S. R. ViswamurthyH-Index: 3
Last. Suryasarathi BoseH-Index: 45
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Abstract Herein, interlaminar crack initiation and its growth in tufted carbon/epoxy composite under Mode-I loading are investigated for different thread materials and tuft densities. Two configurations of Double Cantilever Beam (DCB) test specimens are fabricated – one with 2 rows of tuft (hereafter referred to as lower tuft density) and another with 3 rows of tuft (will be referred to as higher tuft density). The crack front is arrested and delamination growth is delayed by tufting, which incr...
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#1Imen Gnaba (university of lille)H-Index: 2
#2Damien SoulatH-Index: 21
Last. Peng WangH-Index: 22
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The originality of this work consists in the study of the stamping behaviour of tufted and un-tufted carbon preforms. Several preforms by varying the tufting thread orientations (0°, 90° and 0°/90°) and with different stratifications ([0°/90°,-45°/+45°] and [0°/90°,-45°/+45°]2) were manufactured in order to study their out-of-plane deformability. The stamping test was carried out using a hemispherical punch and conducted at two blank-holder pressures (0.05 and 0.2 MPa). The experimental data hig...
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Abstract Z-pinned laminates and sandwich materials are an important class of composites with current applications in aircraft and emerging uses in other light-weight engineered products. This paper reviews research advances in the manufacture, microstructural chacterisation, mechanical properties, environmental durability and other functional properties (e.g. electrical, thermal, damage sensing) of z-pinned composite materials and structures. The review reveals that z-pins can be used in create ...
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#1Hao Shen (university of lille)H-Index: 2
#2Peng Wang (university of lille)H-Index: 22
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Abstract The present paper aims to quantify and optimise the textile reinforcements forming with a complex structure, in particular, the through-thickness reinforcements by tufting. To optimize the forming process, different tufting locations and patterns are used and compared to each other. To quantify and evaluate the forming process, in particular, the wrinkling phenomenon, a Structure from Motion (SFM) based image analysis methodology is proposed. The modelling data for three-dimensional rec...
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#1Hao Shen (university of lille)H-Index: 2
#1Shen Hao (university of lille)
Last. Damien Soulat (university of lille)H-Index: 21
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Abstract As a relatively novel technique, tufting is recently used to provide through-thickness reinforcement of a traditional 2D multi-layered preform, thus improving its resistance to delamination in the final part. In order to optimize the manufacturing process of the composite preforms reinforced by tufting, the studies of the forming behaviour of these tufted preforms are quite necessary, in particular, the influence of the tufting pattern. The present paper investigates the formability of ...
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#1Kundan K. Verma (NAL: National Aerospace Laboratories)H-Index: 6
#2G. Padmakara (NAL: National Aerospace Laboratories)H-Index: 1
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Abstract Tufting of dry preforms is one of the means of accomplishing through-thickness reinforcement (TTR) in a liquid composite molding process. Herein, once a preform is laid up, an automated robotic tufting setup is used to introduce the TTR. The selection of thread and needle for tufting process go hand-in-hand as tufting operation involves the act of penetrating preform by the needle as well as the trauma thread has to endure during this act. This paper explores the methodology of thread a...
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#1Chan Hui (university of lille)H-Index: 1
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Last. Xavier Legrand (university of lille)H-Index: 13
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Abstract Tufting is an ongoing technique to manufacture the 3-dimensional (3D) textile reinforcement for composites. The inserted tufting threads provide a good mechanical performance through-the-thickness of the final composite parts. However, the degradation of inserted tufting thread can be experienced during the tufting process. This degradation brings out the negative influence on the mechanical performance of the reinforced tufting thread and of the composite, which is not yet studied and ...
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#1E. Guzman-Maldonado (University of Lyon)H-Index: 5
#2Peng Wang (Lille University of Science and Technology)H-Index: 22
Last. Philippe Boisse (University of Lyon)H-Index: 49
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Abstract Wrinkling is one of the main flaws that can appear during forming processes of textile composite reinforcements. When the forming is carried out on a multi-layered fabric the wrinkle development is strongly increased if the plies have different orientations. This phenomenon has been observed in previous experimental studies and is confirmed by a set of forming tests on multi-layered reinforcements. Beyond these experiments, a multilayered fabric forming process numerical simulation base...
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Abstract To understand the influence of the fibre architecture of 3D woven composite T-joints on mechanical performance, as well as the benefits that 3D woven T-joints can offer over the equivalent 2D laminates, experimental testing is performed on two types of 3D woven T-joint with only weave variation at the junction, and one type of 2D woven laminate T-joint. A quasi-static tensile pull-off loading is selected in this work as this out-of-plane load case is one of the typical loading condition...
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#1Ying Wang (University of Manchester)H-Index: 12
#2Constantinos Soutis (University of Manchester)H-Index: 54
In this study, a finite element failure model was created using ABAQUS to determine the location where delamination is initiated and its subsequent propagation. The effect of fibre-reinforced structures on delamination behaviour was studied. The composite T-joints were made of glass fabric infused with epoxy resin using a vacuum assisted resin transfer moulding technique. The veil layer and 3D weave techniques were employed to improve the properties in the through-thickness direction that can de...
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