Effect of Environmental Conditions on the Resistance of Damaged Composite Materials
The present paper proposes a strength model for unidirectional composites with Lin/Epoxy. The model assumes that, a central core of broken fibers flanked by unbroken fibers which are subject to stress concentrations from the broken fibers. The approach of the model consists of using a modified shear...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2019-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2422 |
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| author | Sidi Mohammed Amine Khiat Ramdane Zenasni Mawloud Hamdi |
| author_facet | Sidi Mohammed Amine Khiat Ramdane Zenasni Mawloud Hamdi |
| author_sort | Sidi Mohammed Amine Khiat |
| collection | DOAJ |
| description | The present paper proposes a strength model for unidirectional composites with Lin/Epoxy. The model assumes that, a central core of broken fibers flanked by unbroken fibers which are subject to stress concentrations from the broken fibers. The approach of the model consists of using a modified shear lag model to calculate the ineffective lengths and stress concentrations around fiber breaks. In this paper, we attempt to incorporate in the proposed model the unidirectional composite property variation with temperature and moisture in order to predict even composite strength degradation. Strength degradation is often seen as a result of changes in ineffective lengths at fiber breaks. Subsequently, damage to the material can be estimated at the micromechanical scale under the effect of temperature and humidity. |
| format | Article |
| id | doaj-art-28d2f3e96590446c8939c12431906287 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-28d2f3e96590446c8939c124319062872025-01-02T20:56:26ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-09-011350Effect of Environmental Conditions on the Resistance of Damaged Composite MaterialsSidi Mohammed Amine Khiat0Ramdane Zenasni1Mawloud Hamdi2University of Mostaganem, AlgeriaUniversity of Mostaganem, AlgeriaUniversity of Mostaganem, AlgeriaThe present paper proposes a strength model for unidirectional composites with Lin/Epoxy. The model assumes that, a central core of broken fibers flanked by unbroken fibers which are subject to stress concentrations from the broken fibers. The approach of the model consists of using a modified shear lag model to calculate the ineffective lengths and stress concentrations around fiber breaks. In this paper, we attempt to incorporate in the proposed model the unidirectional composite property variation with temperature and moisture in order to predict even composite strength degradation. Strength degradation is often seen as a result of changes in ineffective lengths at fiber breaks. Subsequently, damage to the material can be estimated at the micromechanical scale under the effect of temperature and humidity.https://www.fracturae.com/index.php/fis/article/view/2422Unidirectional compositeBroken fibersMicromechanicsComposite Lin/Epoxy |
| spellingShingle | Sidi Mohammed Amine Khiat Ramdane Zenasni Mawloud Hamdi Effect of Environmental Conditions on the Resistance of Damaged Composite Materials Fracture and Structural Integrity Unidirectional composite Broken fibers Micromechanics Composite Lin/Epoxy |
| title | Effect of Environmental Conditions on the Resistance of Damaged Composite Materials |
| title_full | Effect of Environmental Conditions on the Resistance of Damaged Composite Materials |
| title_fullStr | Effect of Environmental Conditions on the Resistance of Damaged Composite Materials |
| title_full_unstemmed | Effect of Environmental Conditions on the Resistance of Damaged Composite Materials |
| title_short | Effect of Environmental Conditions on the Resistance of Damaged Composite Materials |
| title_sort | effect of environmental conditions on the resistance of damaged composite materials |
| topic | Unidirectional composite Broken fibers Micromechanics Composite Lin/Epoxy |
| url | https://www.fracturae.com/index.php/fis/article/view/2422 |
| work_keys_str_mv | AT sidimohammedaminekhiat effectofenvironmentalconditionsontheresistanceofdamagedcompositematerials AT ramdanezenasni effectofenvironmentalconditionsontheresistanceofdamagedcompositematerials AT mawloudhamdi effectofenvironmentalconditionsontheresistanceofdamagedcompositematerials |