Parametric study on the buckling load after micro-bolt repair of a composite laminate with delamination
| Autor: | Gyu-Seok Kang, Jin-Hwe Kweon, Byeong-Su Kwak, Hyeon-Seok Choe |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Delamination Composite number 02 engineering and technology 021001 nanoscience & nanotechnology Finite element method Brass 020303 mechanical engineering & transports 0203 mechanical engineering Recovery rate Buckling visual_art Ceramics and Composites visual_art.visual_art_medium Intact specimen Composite material 0210 nano-technology Civil and Structural Engineering Parametric statistics |
| Zdroj: | Composite Structures. 215:1-12 |
| ISSN: | 0263-8223 |
| Popis: | Repair of a composite laminate with delamination using micro-bolts is studied parametrically. The effects on compressive buckling load of delamination crack length, bolt material, bolt diameter and arrangement, and bolt–laminate clearance are considered. For 45- and 65-mm crack lengths, buckling load recovery rates using brass bolts are 90% and 73%, respectively. Using steel increases the rate by 6.6% compared to the intact specimen. Tests are performed fixing the number of steel bolts for bolt diameters of 0.6, 1.0, and 1.2 mm. The buckling load recovery rate using 1.2- versus 0.6-mm bolts increases by 6.8%. Finite element analysis confirms the effect of the bolt–laminate gap: 27% larger buckling load for no clearance than for a 0.1-mm gap. 18% higher buckling load, which is 97% of intact-specimen buckling load, is obtained for a 1.2-mm-diameter bolt repair by gluing bolts and holes and then tightening them compared with using bolts alone. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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