Stress Evaluation with Non-Linear Guided Waves

使用非线性导波进行应力评估

• 批准号: DP160102233
• 负责人: Prof Andrei Kotooussov
• 金额: $ 23.05万
• 依托单位: The University of Adelaide
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2016
• 资助国家: 澳大利亚
• 起止时间: 2016-01-01 至 2020-06-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP160102233
• 关键词: Stress; Evaluation; Non; Linear; Guided

This project plans to investigate a novel approach for in situ measurement of stress in structures based on an internal resonance phenomenon for nonlinear guided waves. Monitoring the stress level of critical structural components is important to ensure structural safety. The project plans to derive the requirements for this internal resonance and its dependence on stress analytically and verify them experimentally for both simple waveguides and more realistic structures. The expected outcome is the demonstration of the feasibility of a new inexpensive method for continuous monitoring of applied or thermally-induced stresses, which is of great importance in several engineering contexts, such as modern railway track rails, pipelines or pre-stressed strands in concrete structures.

本计画将探讨以非线性导波之内共振现象为基础，于结构物内进行应力量测之新方法。监测关键结构部件的应力水平对于确保结构安全非常重要。该项目计划推导出这种内部谐振的要求及其对应力的依赖性，并通过简单的波导和更现实的结构进行实验验证。预期的结果是一个新的廉价的方法，用于连续监测应用或热应力，这是非常重要的几个工程背景下，如现代铁路铁轨，管道或预应力钢绞线混凝土结构的可行性示范。