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.

该项目计划研究一种基于非线性导波的内共振现象的结构应力原位测量的新方法。监测关键结构构件的应力水平对确保结构安全具有重要意义。该项目计划以解析的方式推导出这种内部共振的要求及其对应力的依赖关系，并对简单的波导和更现实的结构进行实验验证。预期的结果是证明一种新的廉价的方法用于连续监测外加或热应力的可行性，这在一些工程环境中具有重要意义，例如现代铁路轨道、管道或混凝土结构中的预应力钢绞线。