SP-292: Structural Health Monitoring Technologies最新文献

Discrete Fiber Optic Sensing Techniques for Structural Health Monitoring of Bridges 桥梁结构健康监测的离散光纤传感技术

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686283

F. Ansari

引用次数: 0

"Concrete Building, Monitoring Data and Bayesian Epistemology" 混凝土建筑、监测数据与贝叶斯认识论

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686290

M. Pozzi, B. Glisic, D. Zonta, D. Inaudi

{"title":"\"Concrete Building, Monitoring Data and Bayesian Epistemology\"","authors":"M. Pozzi, B. Glisic, D. Zonta, D. Inaudi","doi":"10.14359/51686290","DOIUrl":"https://doi.org/10.14359/51686290","url":null,"abstract":"An important challenge for widespread application of structural health monitoring (SHM) in civil engineering is the creation and implementation of algorithms for automatic and reliable detection of unusual structural behavior. Branko, the lead role and the second author of this paper has been in charge of data analysis of a 19storey tall building. Observation of the data from the instrumentation has over the years, convinced Branko that there is an ongoing differential settlement of one of the base columns, in apparent contrast with his initial expectations. This conclusion matured gradually not only as a consequence of the monitoring results, but also based on verbal information received from a design engineer. Thus, besides the quantitative data provided by the monitoring system, including in the data analysis algorithms the engineer’s knowledge and experience has also been of value. In this study we propose an approach based on Bayesian logic as an effective tool to allow such a blend of field knowledge and SHM results. We show how the whole cognitive process followed by Branko can be suitably reproduced using Bayesian logic. In particular, we discuss to what extent the prior knowledge and potential evidence from inspection, can alter a perception of building behavior based on SHM data alone.","PeriodicalId":340396,"journal":{"name":"SP-292: Structural Health Monitoring Technologies","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129322469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Life Cycle Analysis Addressing Maintenance and Repair Options and Its Affections on Remaining Lifetime 维护和维修选择及其对剩余寿命影响的生命周期分析

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686291

H. Wenzel, R. Veit-Egerer, Monika Widmann

引用次数: 1

Smart Technical Textiles for Structural Health Monitoring 结构健康监测智能技术纺织品

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686286

D. Inaudi, Riccardo Belli

引用次数: 3

Distributed Fiber Optic Sensing Technologies and Applications – An Overview 分布式光纤传感技术及应用综述

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686284

B. Glisic

{"title":"Distributed Fiber Optic Sensing Technologies and Applications – An Overview","authors":"B. Glisic","doi":"10.14359/51686284","DOIUrl":"https://doi.org/10.14359/51686284","url":null,"abstract":"Needs for structural health monitoring in the last decades were rapidly increasing, and these needs stimulated developments of various sensing technologies. Distributed optical fiber sensing technologies have reached market maturity and opened new possibilities in structural health monitoring. Distributed strain sensor (sensing cable) is sensitive at each point of its length to strain changes and cracks. Such a sensor practically monitors one-dimensional strain field and can be installed over all the entire length of the monitored structural members, and therefore provides for integrity monitoring, i.e. for direct detection and characterization of local strain changes generated by damage (including recognition, localization, and quantification or rating). The aim of this paper is to help researchers and practitioners to get familiar with distributed sensing technologies, to understand the meaning of the distributed measurement, and to learn on best performances and limitations of these technologies. Hence, this paper briefly present light scattering as the main physical principles behind technologies, explains the spatial resolution as the important feature for interpretation of measurements, compares performances of various distributed technologies found in the market, and introduces the concept of integrity monitoring applicable to various concrete structures. Two illustrative examples are presented, including applications to pipeline and bridge.","PeriodicalId":340396,"journal":{"name":"SP-292: Structural Health Monitoring Technologies","volume":"13 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120896042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21

Overview of Monitoring Applications from the Iowa DOT Point of View 从爱荷华州交通部的角度概述监测应用

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686292

B. Phares, Ahmad Abu-Hawash, Ping Lu, T. Wipf

引用次数: 0

Structural Health Monitoring with an Active Data Management System for Secondary Road Bridges 基于主动数据管理系统的二级桥梁结构健康监测

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686288

Yoon-Si Lee, B. Phares, T. Wipf, F. Malhas

引用次数: 0

Effects on Impact-Echo Signals Caused by Adjacent Steel Reinforcing Bars and Defects in Lap-Splice Regions: Experimental Study 相邻钢筋和搭接区缺陷对冲击回波信号影响的实验研究

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686289

A. Pagnotta, D. Trejo, P. Gardoni, Qindan Huang

引用次数: 0

Carbon Black Engineered Cementitious Composites - Mechanical and Electrical Characterization 炭黑工程胶凝复合材料。机械和电气特性

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686287

Mo Li, V. Lin, J. Lynch, V. Li

{"title":"Carbon Black Engineered Cementitious Composites - Mechanical and Electrical Characterization","authors":"Mo Li, V. Lin, J. Lynch, V. Li","doi":"10.14359/51686287","DOIUrl":"https://doi.org/10.14359/51686287","url":null,"abstract":"Synopsis: The protection and health monitoring of deteriorating concrete infrastructure requires a new generation of self-sensing structural materials that possess intrinsic damage tolerance but offer self-sensing capabilities that are tailored to diagnose states of cracking. Engineered Cementitious Composites (ECC) doped with carbon black (CB) nano-particles are proposed as highly damage-tolerant materials whose electrical properties can be correlated to strain and cracking. This study investigated the effect of CB dosage on the CB-ECC rheological, mechanical and electrical properties. By incorporating CB nano-particles into the ECC system while simultaneously controlling the rheological properties of the fresh mix, the fully cured CB-ECC elements achieved close-to-uniform PVA fiber and carbon black dispersion, reduced bulk resistivity by an order of magnitude, strain hardening behavior with tensile strain capacity of 0.26 to 1.38%, and reduced crack widths of 30 to 40 m during tensile loading. Furthermore, all of the CB-ECC specimens exhibited prominent piezoresistive behavior with resistivity increasing in tandem with applied tensile strain, thereby indicating the potential of CB-ECC for strain and damage sensing.","PeriodicalId":340396,"journal":{"name":"SP-292: Structural Health Monitoring Technologies","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121059823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Use of Electrical Impedance Spectroscopy and Conductive Surface Films to Detect Cracking and Damage in Cement Based Materials 利用电阻抗谱和导电表面膜检测水泥基材料的开裂和损伤

SP-292: Structural Health Monitoring Technologies Pub Date : 2013-10-02 DOI: 10.14359/51686285

M. Pour-Ghaz, Mark D. Niemuth, J. Weiss

引用次数: 8