基于数据的超声波分析,用于评估混凝土层的粘合强度
Pooria Khademi1, Vahab Toufigh1
1Department of Civil Engineering, The Sharif University of Technology, Tehran, Iran.
Ultrasonics
|September 24, 2023
概括
这项研究使用机器学习模型来估计使用超声波参数的混凝土粘合强度. 减弱被发现是结构中键强度变化的最敏感指标.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 非破坏性测试 不破坏性测试
背景情况:
- 混凝土层之间的粘合条件对于加速桥梁施工,3D打印和改装中的结构完整性至关重要.
- 非破坏性测试 (NDT) 为监测这些关键债券条件提供了一种有效的方法.
- 评估结合强度对于确保混凝土结构的安全性和功能至关重要.
研究的目的:
- 开发和比较机器学习模型,用超声波参数来估计混凝土层的结合强度.
- 为了确定最敏感的超声波参数,以检测由于不同处理而导致的键强度变化.
- 评估不同能量损失计算方法在预测债券强度方面的有效性.
主要方法:
- 使用卷积神经网络 (CNN) 和多层感知器 (MLP) 模型.
- 输入参数包括超声波脉冲速度,衰减,最大振幅和能量损失.
- 对比了两个能量损失评估方法:整个样本与债券区域分析.
主要成果:
- 机器学习模型根据超声波参数准确估计了双表面剪切强度.
- 评估特定于债券区的能量损失,比整个样本分析更可靠和更一致的结果.
- 超声衰减成为对键强度变化最敏感的参数,表明其在检测键变化的有效性.
结论:
- 机器学习,特别是CNN和MLP,结合超声波测试,提供了一种可靠的方法来评估混凝土层的结合强度.
- 将超声波能量损失分析集中在键区上,可以提高预测的准确性.
- 超声波衰减是监测结合质量和检测混凝土结构中解结合的关键指标.
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