非线性引导波的静态组成部分作为超级合金中爬行损伤的优选指标
Peng Zheng1, Xuan Li1, Peng Xiao2
1Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
Ultrasonics
|November 24, 2025
概括
使用静态元件信号的新型非线性超声波方法改善了超合金中的爬行损伤检测. 这种方法在整个物质生命周期内提供了稳定,线性评估,克服了结构健康监测传统方法的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 非破坏性测试是指非破坏性测试.
- 机械工程 机械工程
背景情况:
- 非线性超声波测试,特别是第二波代,显示了早期爬行损伤检测的潜力.
- 实际应用受限于模式匹配的依赖性和高级损伤阶段的信号退化.
- 传统的方法很难在整个爬行过程中准确地描述微观结构进化的特征.
研究的目的:
- 引入引导波传播的静态元件信号 (β0) 用于超级合金中的爬行损害评估.
- 扩大非线性超声响应的表征范围,并在后来的爬行阶段增强检测稳定性.
- 克服传统非线性超声波技术的局限性,用于晚期爬行损伤检测.
主要方法:
- 利用引导波传播的静态元件信号 (β0) 进行爬行损害评估.
- 在超级合金的爬行测试中研究了静态元件的非线性参数.
- 在不同的损坏条件下,将静态元件参数与第二波参数进行比较.
主要成果:
- 静态元件信号在很大程度上对模式匹配条件不敏感.
- 它的非线性参数在整个爬行生命周期中表现出稳定,线性增长.
- 静态元件显示了与第二波参数的"上升然后下降"趋势相比的更好的稳定性和实际适用性.
结论:
- 静态元件信号为超级合金中爬行损伤评估提供了更强大和更实用的方法.
- 这种方法提高了后期爬行阶段的检测稳定性,解决了传统技术的局限性.
- 它为结构健康监测和高温材料寿命评估提供了有价值的补充工具.
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