Knowledge Management System of Institue of Mechanics, CAS
| Discontinuous growth mechanisms of mode II crack under high-speed impact conditions | |
Ma W(马维) ; Ma W
| |
| Source Publication | Structural Integrity And Failure |
| 2008 | |
| Pages | 169-173 |
| Conference Name | International Conference on Structural Integrity and Failure/International Conference on Failure Analysis and Maintenance Technologies |
| Conference Date | JUL 09-11, 2008 |
| Conference Place | Perth, AUSTRALIA |
| Abstract | A recoverable plate impact testing technology has been used for studying the growth mechanisms of mode II crack. The results show that interactions of microcracks ahead of a crack tip cause the crack growth unsteadily. Failure mode transitions of materials were observed. Based on the observations, a discontinuous crack growth model was established. Analysis shows that the shear crack grows unsteady as the growth speed is between the Rayleigh wave speed c(R) and the shear wave speed c(s); however, when the growth speed approaches root 2c(s), the crack grows steadily. The transient microcrack growth makes the main crack speed to jump from subsonic to intersonic and the steady growth of all the sub-cracks leads the main crack to grow stably at an intersonic speed. |
| Keyword | Plate Impact Tests Dynamic Fracture Failure Mode Transition Intersonic Crack Extension Discontinuous Crack Growth Model Dynamic Fracture Shear Transitions |
| WOS ID | WOS:000257176700023 |
| Department | LMFS工程地质体力学(LEM) |
| ISBN | 978-0-87849-386-9 |
| URL | 查看原文 |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/25394 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Ma W |
| Recommended Citation GB/T 7714 | Ma W,Ma W. Discontinuous growth mechanisms of mode II crack under high-speed impact conditions[C]Structural Integrity And Failure,2008:169-173. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| AMR.41-42.169.pdf（894KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment