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http://hdl.handle.net/11452/23272
Title: | Investigation of damage initiation and propagation in 2x2 twill woven carbon/epoxy multi-layer composites |
Authors: | Uludağ Üniversitesi/Teknik Bilimler Meslek Yüksekokulu Karahan, Mehmet AAK-4298-2021 8649952500 |
Keywords: | Materials science 2x2 twill woven composites Acoustic emission Damage Full-field strain measurement Mechanical properties Braided textile composites 3d orthogonal weave Tensile properties Part 1 Failure analysis Behavior Acoustic emission testing Acoustic emissions Composite materials Fibers Mechanical properties Optical data processing Optical microscopy Reinforcement Strain Strain gages Strain measurement Textiles Applied strain Carbon/epoxy Damage Damage initiation Damage investigation Damage threshold Epoxy composite Full-field Full-field strain measurement Internal structure Mechanical behavior Multilayer composite Optical measurement Reinforcement structures Strain concentration Strain values Textile composite Textile reinforcement Uniaxial tensions Woven composite Weaving |
Issue Date: | Mar-2011 |
Publisher: | Sage Publications |
Citation: | Karahan, M. (2011). "Investigation of damage initiation and propagation in 2x2 twill woven carbon/epoxy multi-layer composites". Textile Research Journal, 81(4), 412-428. |
Abstract: | Damage and mechanical properties in textile composites are closely connected with the textile reinforcement's internal structure. This paper reports and discusses a study of the mechanical behavior and damage of a 2 x 2 twill woven carbon/ epoxy composite resulting from uniaxial tension in the warp and bias directions. A damage investigation was performed by using acoustic emission and full-field strain optical measurements, as well as X-ray and optical microscopy. As a result of the tests, the mechanical properties and strain values of the composite's damage threshold were determined. Damage initiation when loaded in the warp and bias directions occurred between 0.2% and 0.3% and 0.88% and 1.71% of the applied strain, respectively. Microscopic examination showed that damage or cracks initiated where the yarn was crimped and at interactions between the warp and filling yarns. Full-field strain measurements highlighted the relation between the strain concentrations that are linked with the damage initiation and the reinforcement structure. |
URI: | https://doi.org/10.1177/0040517510395996 https://journals.sagepub.com/doi/10.1177/0040517510395996 http://hdl.handle.net/11452/23272 |
ISSN: | 0040-5175 1746-7748 |
Appears in Collections: | Scopus Web of Science |
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