Fatigue Crack Control in Waterway Lock Gate Pintle Locations Subjected to Multi-Modal Fracture
| 项目名称： | Fatigue Crack Control in Waterway Lock Gate Pintle Locations Subjected to Multi-Modal Fracture |
| 摘要： | The proposed research project will address multi-mode fatigue cracking within critical lock gate pintle locations. The lock gate pintle is a ball-and-socket joint that is crucial for proper gate operation, but is subject to frequent fatigue cracking. Fatigue crack repair within pintle locations is particularly challenging due to the complex multi-axial loading conditions (combined axial and torsional loads) that occur during gate opening and closing. The project proposed herein will analytically investigate multi-axial stress demands within common pintle geometries during operation, and develop bonded fiber reinforced polymer (FRP) retrofits capable of controlling multi-mode fractures (fractures that originate from both tensile and shear stresses). The project contains two integrated research components: 1) a detailed analytical crack investigation to develop FRP retrofit strategies; and 2) a multi-axial experimental fatigue investigation exploring FRP retrofit effects on multi-mode fatigue fractures. Outcomes of the proposed project include an implementable pintle fatigue retrofit strategy for US Army Corps of Engineers stakeholders, ultimately improving waterway infrastructure reliability. Additionally, novel multi-mode fatigue data for composite materials will be generated and advanced research training will be provided for an engineering graduate student (providing knowledge transfer to industry upon completion). |
| 状态： | Active |
| 资金： | 176347 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 管理组织： | Maritime Transportation Research and Education Center |
| 执行机构： | University of Arkansas, Fayetteville |
| 主要研究人员： | Prinz, Gary S |
| 开始时间： | 20180813 |
| 预计完成日期： | 20200814 |
| 实际结束时间： | 0 |
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