درباره ما
NASA-CR-2057
Tensile failure criteria for fiber composite materials
Year: 1972
Abstract: The analysis provides insight into the failure mechanics of these materials and defines criteria which serve as tools for preliminary design material selection and for material reliability assessment. The model incorporates both dispersed and propagation type failures and includes the influence of material heterogeneity. The important effects of localized matrix damage and post-failure matrix shear stress transfer are included in the treatment. The model is used to evaluate the influence of key parameters on the failure of several commonly used fiber-matrix systems. Analyses of three possible failure modes were developed. These modes are the fiber break propagation mode, the cumulative group fracture mode, and the weakest link mode. Application of the new model to composite material systems has indicated several results which require attention in the development of reliable structural composites. Prominent among these are the size effect and the influence of fiber strength variability
Subject: COMPOSITE
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:06:59Z | |
| date available | 2017-09-04T15:06:59Z | |
| date copyright | 01/01/1972 | |
| date issued | 1972 | |
| identifier other | LGNKAEAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/4621 | |
| description abstract | The analysis provides insight into the failure mechanics of these materials and defines criteria which serve as tools for preliminary design material selection and for material reliability assessment. The model incorporates both dispersed and propagation type failures and includes the influence of material heterogeneity. The important effects of localized matrix damage and post-failure matrix shear stress transfer are included in the treatment. The model is used to evaluate the influence of key parameters on the failure of several commonly used fiber-matrix systems. Analyses of three possible failure modes were developed. These modes are the fiber break propagation mode, the cumulative group fracture mode, and the weakest link mode. Application of the new model to composite material systems has indicated several results which require attention in the development of reliable structural composites. Prominent among these are the size effect and the influence of fiber strength variability | |
| language | English | |
| title | NASA-CR-2057 | num |
| title | Tensile failure criteria for fiber composite materials | en |
| type | standard | |
| page | 168 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1972 | |
| contenttype | fulltext | |
| subject keywords | COMPOSITE | |
| subject keywords | DESIGN | |
| subject keywords | FAILURE | |
| subject keywords | FIBER | |
| subject keywords | MATERIALS | |
| subject keywords | MATHEMATICAL | |
| subject keywords | MODELS | |
| subject keywords | MODES | |
| subject keywords | PROPERTIES | |
| subject keywords | STRENGTH | |
| subject keywords | STRUCTURAL | |
| subject keywords | TENSILE |