DYNAMIC INTERLAMINAR FRACTURE TOUGHNESS IN POLYMERIC COMPOSITES
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1999
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| _version_ | 1866901084351496192 |
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| author | C. T. Sun J.L. Tsai |
| author_facet | C. T. Sun J.L. Tsai |
| contents | A modified ENF specimens with off mid-plane delamination precrack was used to determine the mixed mode dynamic interlaminar fracture toughness of fiber composites at high crack propagation speeds. A strip of FM-73 adhesive film was placed ahead of the tip of the delamination crack created during laminate lay-up to increase the crack initiation toughness so that after initiation an unstable crack propagation could be produced and high crack propagation speeds achieved. A finite element model was used for the numerical simulation of dynamic crack propagation. Dynamic delamination experiments were performed on modified ENF specimens of unidirectional AS4/3501-6 graphite/epoxy composite under three point bending. The results showed that the dynamic fracture toughness is not affected significantly by crack speed up to 1100 m/s. |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_15419241 |
| institution | Zenodo |
| language | |
| publishDate | 1999 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | DYNAMIC INTERLAMINAR FRACTURE TOUGHNESS IN POLYMERIC COMPOSITES C. T. Sun J.L. Tsai A modified ENF specimens with off mid-plane delamination precrack was used to determine the mixed mode dynamic interlaminar fracture toughness of fiber composites at high crack propagation speeds. A strip of FM-73 adhesive film was placed ahead of the tip of the delamination crack created during laminate lay-up to increase the crack initiation toughness so that after initiation an unstable crack propagation could be produced and high crack propagation speeds achieved. A finite element model was used for the numerical simulation of dynamic crack propagation. Dynamic delamination experiments were performed on modified ENF specimens of unidirectional AS4/3501-6 graphite/epoxy composite under three point bending. The results showed that the dynamic fracture toughness is not affected significantly by crack speed up to 1100 m/s. |
| title | DYNAMIC INTERLAMINAR FRACTURE TOUGHNESS IN POLYMERIC COMPOSITES |
| url | https://doi.org/10.5281/zenodo.15419241 |