Statistical Elastodynamic Inversion for Pavement Nondestructive Evaluation
路面无损评价的统计弹动力反演
基本信息
- 批准号:0408390
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2004
- 资助国家:美国
- 起止时间:2004-06-01 至 2008-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
AbstractNon-destructive evaluation (NDE) has generated great interest in assessing structural capacity of road, highway and airfield pavements. While considerable effort has been devoted to static analysis based inversion, little has been done to investigate inverse problems based on dynamic analysis while taking uncertainty into account. The proposed research will establish a rigorous and unified theoretical framework for pavement NDE that integrates statistical science, optimization theory, and computer simulation, and will develop an elastodynamic inverse analysis software toolkit for practical engineering applications. By using the entire time history of forward dynamic analysis in inversion, the proposed research will provide more stable and more accurate results. By formulating unknown parameter reconstruction using maximum likelihood estimate and its robust counterpart within the framework of Bayesian decision theory and Markov Chain Monte Carlo simulation, the research promises to bring tremendous benefits. These include allowing uncertainty to be treated naturally, allowing the effect of measurement noise and outliers to be mitigated, allowing engineers' experience to be incorporated as a priori information, and enabling the accuracy and reliability of reconstructed parameters to be quantitatively assessed using the provided parameter uncertainty. By investigating a variety of classical and non-classical optimizations algorithm and artificial neural network in the context of NDE in both the time and the transformed domain, the research promises to develop efficient, accurate and robust optimization methods for the implementation of the project, and to retrieve much richer information of unknown physical properties from measured pavement responses.The proposed methodological framework can be generally applicable to similar types of NDE, thereby adding new scientific knowledge to other fields. The project will generate cost-effective, fast and reliable pavement NDE techniques, which will result in significant economic benefits. As an inter-disciplinary research effort, the project will provide students cross-disciplinary exposure and unique experience in analytical, computational and experimental work.
摘要非破坏性评价(NDE)在评估道路、高速公路和机场道面的结构承载力方面引起了极大的兴趣。虽然相当大的努力已经投入到静态分析的基础上的反演,很少有人做调查的基础上动态分析,同时考虑到不确定性的反问题。该研究将为路面无损检测建立一个严格统一的理论框架,将统计科学,优化理论和计算机模拟相结合,并将开发一个实际工程应用的弹性动力学反分析软件工具包。通过在反演中使用正演动力分析的整个时程,所提出的研究将提供更稳定和更准确的结果。通过在贝叶斯决策理论和马尔可夫链蒙特卡罗模拟的框架内,使用最大似然估计及其鲁棒对应物来制定未知参数重构,该研究有望带来巨大的效益。这些包括允许自然地处理不确定性,允许减轻测量噪声和异常值的影响,允许工程师的经验作为先验信息,以及使得能够使用所提供的参数不确定性来定量评估重构参数的准确性和可靠性。通过研究各种经典和非经典的优化算法和人工神经网络在无损检测的背景下,在时间和转换域,研究有望开发高效,准确和鲁棒的优化方法,为项目的实施,从实测路面响应中获取更丰富的未知物理性质信息,具有普遍适用性类似类型的无损检测,从而增加了新的科学知识,其他领域。该项目将产生具有成本效益,快速和可靠的路面无损检测技术,这将产生显着的经济效益。作为一个跨学科的研究工作,该项目将为学生提供跨学科的接触和分析,计算和实验工作的独特经验。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Lu Sun其他文献
A comparison study to investigate the effect of the drug-loading site on its delivey efficacy using double hydrophilic block copolymer-based prodrugs
基于双亲水性嵌段共聚物的前药研究载药位点对其递送功效影响的比较研究
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:7
- 作者:
Xufeng Zhou;Cong Chang;Yang Zhou;Lu Sun;Hua Xiang;Sijie Zhao;Liwei Ma;Guohua Zheng;Mingzhu Liu;Hua Wei - 通讯作者:
Hua Wei
High-qualitynbsp;frequency-lockednbsp;opticalnbsp;frequencynbsp;combnbsp;sourcenbsp;fornbsp;terabitsnbsp;opticalnbsp;communicationnbsp;system
高质量
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:1.3
- 作者:
Jianrui Li;Xianfeng Tang;Lu Sun;Xiaoguang Zhang - 通讯作者:
Xiaoguang Zhang
Study on the tofu quality evaluation method and the establishment of a model for suitable soybean varieties for Chinese traditional tofu processing
豆腐品质评价方法研究及中国传统豆腐加工适宜大豆品种模型建立
- DOI:
10.1016/j.lwt.2019.108441 - 发表时间:
2020 - 期刊:
- 影响因子:0
- 作者:
Fang Wang;Jun Meng;Lu Sun;Zebing Weng;Yong Fang;Xiaozhi Tang;Tuanjie Zhao;Xinchun Shen - 通讯作者:
Xinchun Shen
An adaptive training program for tone acquisition
音调习得的自适应训练计划
- DOI:
10.21437/speechprosody.2010-72 - 发表时间:
2010 - 期刊:
- 影响因子:0
- 作者:
Chilin Shih;H. Lu;Lu Sun;J. Huang;Jerry Packard - 通讯作者:
Jerry Packard
A nonlinear characteristic regime of biomembrane force probe.
生物膜力探针的非线性特性体系。
- DOI:
10.1016/j.jbiomech.2010.11.005 - 发表时间:
2011 - 期刊:
- 影响因子:2.4
- 作者:
Lu Sun;Q. Cheng;Huajian Gao;Yong - 通讯作者:
Yong
Lu Sun的其他文献
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{{ truncateString('Lu Sun', 18)}}的其他基金
CAREER: Stochastic and Dynamic Interaction of Vehicle-Pavement Systems and Its Applications to Transportation Infrastructure
职业:车辆-路面系统的随机和动态相互作用及其在交通基础设施中的应用
- 批准号:
0644552 - 财政年份:2007
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Modeling Human Driving Behavior and Response with Applications to Intelligent Agent-Based Traffic Flow Simulation
合作研究:利用基于智能代理的交通流模拟对人类驾驶行为和响应进行建模
- 批准号:
0527508 - 财政年份:2006
- 资助金额:
-- - 项目类别:
Standard Grant
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