.png){kind=icon}
返回
Uncertainties quantification for damage localization in concrete based on Bayesian method
.png){kind=icon}
PRE
AI
DOI：10.1016/j.probengmech.2024.103660.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The presence of defects in concrete can diminish load-bearing capacity of structures, giving rise to potential concerns regarding safety and durability. Thus, a method that enhances the sensitivity, resolution and robustness of damage localization is critically necessary to assess the condition of concrete structures. This research presents a damage localization method based on Bayesian probabilistic fusion, and uncertainties from measurement and identification process are considered and quantified. The likelihood function is constructed based on the hyperbola-based damage localization method, and the posterior distributions of unknown parameters are calculated via Bayesian theorem combined with measurement data. Furthermore, a meso-level finite element model is established, wherein the concrete medium is considered as a three-phase composite material consisting of polygonal aggregates, mortar matrix and interface transition zones. Owing to the meso-level modeling, the propagation behavior of stress waves within concrete and complicated interactions between stress waves and concrete internal structures can be better characterized. Finally, the damage information, time-difference-of arrival, is extracted from the response signals and the efficiency of the proposed method is verified numerically. The numerical results demonstrate that the proposed probabilistic fusion method outperforms the conventional hyperbola-based method in terms of achieving high spatial resolution and resilience in damage localization.
Keyword:
Bayesian method
Damage localization
Meso-level concrete numerical model
Structural health monitoring
期刊
IF:
3.5
论文数:
1.7K
被引数:
4.1K
机构
引用论文
A time-reversal assisted probabilistic fusion strategy for damage localization in plate-like structures using Lamb waves使用Lamb波在板状结构中进行损伤定位的时间反转辅助概率融合策略
PREAI
分享收藏Internal imaging of concrete fracture based on elastic waves and ultrasound computed tomography基于弹性波和超声ct的混凝土断裂内部成像研究.png)
MEASUREMENT
OAAI
MEASUREMENTIF5.6
OAAI分享收藏A novel Bayesian imaging method for probabilistic delamination detection of composite materials
PREAI
分享收藏
查看更多内容