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Modelling the (damage) mechanics of textile composites with the aid of micro-tomography measurements

Wim Van Paepegem (UGent) , Ives De Baere (UGent) , Subbareddy Daggumati (UGent) , Geert Luyckx (UGent) , Manuel Dierick (UGent) , Denis Van Loo (UGent) and Veerle Cnudde (UGent)
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Abstract
Textile-reinforced thermoplastic composites are widely used in aerospace structures, because they offer good drapability, excellent balance of stiffness and strength, fast processing conditions and potential for fusion bonded joints. On the other hand, their mechanical behaviour, especially in the presence of damage, is complicated, due to the interlacing fibres, resin rich matrix pockets and crack containment by the fibre reinforcement architecture. The Mechanics of Materials and Structures research group at UGent develops finite element simulation tools to predict damage initiation and growth in textile composites, and makes use of embedded sensors to measure local strains and deformations in the composite. Micro-tomography measurements are particularly helpful in this regard for several reasons: 1) they provide the three-dimensional geometry of the textile reinforcement architecture, which is imported in finite element simulations for further mechanical analysis, 2) cracks can be visualized in a non-destructive manner, because embedding and polishing thermoplastic composite samples for optical microscopy, is not an easy task and can lead to an altered state of the cracks, 3) the embedded sensors can be visualized very easily, and their correct alignment and position can be verified.
Keywords
fatigue, optical fibre sensors, composites, damage, textiles

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Chicago
Van Paepegem, Wim, Ives De Baere, Subbareddy Daggumati, Geert Luyckx, Manuel Dierick, Denis Van Loo, and Veerle Cnudde. 2010. “Modelling the (damage) Mechanics of Textile Composites with the Aid of Micro-tomography Measurements.” In X-ray Tomography as a Multidisciplinary Research Tool : Exploring New Frontiers, ed. Joris Van Acker, Luc Van Hoorebeke, Patric Jacobs, Veerle Cnudde, and Jan Van den Bulcke, 73–73. Ghent, Belgium: Ghent University. Centre for X-ray Tomography (UGCT).
APA
Van Paepegem, Wim, De Baere, I., Daggumati, S., Luyckx, G., Dierick, M., Van Loo, D., & Cnudde, V. (2010). Modelling the (damage) mechanics of textile composites with the aid of micro-tomography measurements. In Joris Van Acker, L. Van Hoorebeke, P. Jacobs, V. Cnudde, & J. Van den Bulcke (Eds.), X-ray tomography as a multidisciplinary research tool : exploring new frontiers (pp. 73–73). Presented at the 1st UGCT seminar : X-ray tomography as a multidisciplinary research tool : exploring new frontiers, Ghent, Belgium: Ghent University. Centre for X-ray Tomography (UGCT).
Vancouver
1.
Van Paepegem W, De Baere I, Daggumati S, Luyckx G, Dierick M, Van Loo D, et al. Modelling the (damage) mechanics of textile composites with the aid of micro-tomography measurements. In: Van Acker J, Van Hoorebeke L, Jacobs P, Cnudde V, Van den Bulcke J, editors. X-ray tomography as a multidisciplinary research tool : exploring new frontiers. Ghent, Belgium: Ghent University. Centre for X-ray Tomography (UGCT); 2010. p. 73–73.
MLA
Van Paepegem, Wim, Ives De Baere, Subbareddy Daggumati, et al. “Modelling the (damage) Mechanics of Textile Composites with the Aid of Micro-tomography Measurements.” X-ray Tomography as a Multidisciplinary Research Tool : Exploring New Frontiers. Ed. Joris Van Acker et al. Ghent, Belgium: Ghent University. Centre for X-ray Tomography (UGCT), 2010. 73–73. Print.
@inproceedings{1106764,
  abstract     = {Textile-reinforced thermoplastic composites are widely used in aerospace structures, because they offer good drapability, excellent balance of stiffness and strength, fast processing conditions and potential for fusion bonded joints. On the other hand, their mechanical behaviour, especially in the presence of damage, is complicated, due to the interlacing fibres, resin rich matrix pockets and crack containment by the fibre
reinforcement architecture.
The Mechanics of Materials and Structures research group at UGent develops finite element simulation tools to predict damage initiation and growth in textile composites, and makes use of embedded sensors to measure local strains and deformations in the composite. Micro-tomography measurements are particularly helpful in this regard for
several reasons:
1) they provide the three-dimensional geometry of the textile reinforcement architecture, which is imported in finite element simulations for further mechanical analysis,
2) cracks can be visualized in a non-destructive manner, because embedding and polishing thermoplastic composite samples for optical microscopy, is not an easy task and can lead to an altered state of the cracks,
3) the embedded sensors can be visualized very easily, and their correct alignment and position can be verified.},
  author       = {Van Paepegem, Wim and De Baere, Ives and Daggumati, Subbareddy and Luyckx, Geert and Dierick, Manuel and Van Loo, Denis and Cnudde, Veerle},
  booktitle    = {X-ray tomography as a multidisciplinary research tool : exploring new frontiers},
  editor       = {Van Acker, Joris and Van Hoorebeke, Luc and Jacobs, Patric and Cnudde, Veerle and Van den Bulcke, Jan},
  isbn         = {9789080656581},
  language     = {eng},
  location     = {Ghent, Belgium},
  pages        = {73--73},
  publisher    = {Ghent University. Centre for X-ray Tomography (UGCT)},
  title        = {Modelling the (damage) mechanics of textile composites with the aid of micro-tomography measurements},
  year         = {2010},
}