標(biāo)題: Titlebook [打印本頁(yè)] 作者: Maculate 時(shí)間: 2025-3-21 18:36 作者: 抒情短詩(shī) 時(shí)間: 2025-3-21 22:34 作者: 強(qiáng)制性 時(shí)間: 2025-3-22 00:52 作者: LVAD360 時(shí)間: 2025-3-22 06:19
SHM Campaign on 138 Spans of Railway Viaducts by Means of OMA and Wireless Sensors Network fact, bridges and viaducts represent key components of the transportation network, and therefore they increasingly draw infrastructure managers’ attention. The present work is the result of a project carried out by Politecnico di Milano, consisting of a large experimental campaign conducted on a se作者: extrovert 時(shí)間: 2025-3-22 10:35
Effect of Damage on Vibration Characteristics of Reinforced Concrete Deck Slabs in an Existing Steelck slabs. An investigation using ambient vibration measurement with eleven sensors in a deck panel was conducted to study the effect of damages on vibrational characteristics and dynamic parameters of the deck slabs of a real bridge. The investigation was carried out at three different deck panel lo作者: GEN 時(shí)間: 2025-3-22 16:03
Assessing Structural Health State by Monitoring Peridynamics Parameters in Operational Conditionsctural Health Monitoring (SHM). In particular, the paper aims to exploit PDs for SHM and damage characterization of the built environment, at the structural scale, in operational conditions (i.e., without input sources). The reasons behind this study rely on the possibility to use PDs to emulate ver作者: GEN 時(shí)間: 2025-3-22 20:25
Impact Damage Identification Using Chirped Ultrasonic Guided Waves for Health Monitoring of CFRP Vehr, the barely visible impact damages (BVIDs) in CFRP laminates may cause a significant degradation in the performance, seriously affecting the safety of daily use. Hence, structural health monitoring (SHM) systems that can detect the BVIDs in mobilities are urgently needed. In this research, we atte作者: CRP743 時(shí)間: 2025-3-22 21:32
Bayesian Model Updating of a Simply-Supported Truss Bridge Based on Dynamic Responses FFT method was used to perform the modal identification obtained from field tests, and the Transitional Markov Chain Monte Carlo (TMCMC) algorithm is employed to generate samples. Although updating as many parameters as possible is the ideal model update process, it is not practical to identify all作者: 微粒 時(shí)間: 2025-3-23 02:03
Vibration-Based Method for Structural Health Monitoring of a Bridge Pier Subjected to Environmental system is developed to define new modal parameters to be monitored. Parameters from OMA make it possible to characterize the structure using experimental modal analysis (EMA). The method is applied to a bridge pier subjected to scour. Indeed, a prestressed concrete, motorway bridge on A71 in France作者: brother 時(shí)間: 2025-3-23 06:28 作者: 遷移 時(shí)間: 2025-3-23 11:04
The Optimization Study of Apparent Damage Recognition Algorithm of Bridge Underwater Structureifficult to guarantee and the accuracy of damage recognition is relatively low. Deep learning algorithm is increasingly widely used in the field of image identification. Especially, when it is used in damage identification, the labor costs can be saved and the identification accuracy of damage categ作者: Barter 時(shí)間: 2025-3-23 16:21 作者: 連系 時(shí)間: 2025-3-23 19:08 作者: dearth 時(shí)間: 2025-3-24 02:11
Experimental and Numerical Characterization of the Dynamic Behaviour of a Historic Suspension Footbrnt vibration tests were performed on the footbridge to extract the modal parameters of the structure such as natural frequencies, damping ratios, and mode shapes. The modal properties were identified from ambient vibration tests adopting the Stochastic Subspace Identification (SSI) technique. The av作者: sterilization 時(shí)間: 2025-3-24 03:34
Vision-Based Vibration Measurement of Stay-Cables by Video Motion Magnification and Dynamic Mode Dec of inspection or measurement systems: static-direct inspection using loadcell, magnetic-based permeability measurement, and vibration measurement. The vibration measurement is widely employed because of its efficacy and practicality. The current vibration measurements of stay cables include contact作者: 錯(cuò) 時(shí)間: 2025-3-24 07:06 作者: Host142 時(shí)間: 2025-3-24 11:14
Application of Regenerated Phase-Shifted Fiber Bragg Grating Sensors to Acoustic Emission Detection civil structures, such as thermal and nuclear power plants. Acoustic emission (AE) detection can be potentially used to establish the real-time passive SHM method. Conventional AE sensors are made from piezoelectric materials, whose operational temperature is limited up to 200?°C. Hence, it is diff作者: Flatus 時(shí)間: 2025-3-24 17:44
Experimental Investigation of Galloping Susceptibility of U Beams with Different Flange Porositynalysed beams are geometrically identical with the U-shaped cross section given by the side ratio equal to 2 (having the short side perpendicular to the flow) and the depth equal to 1/3rd of its breadth, but they differ in the porosity of their flanges. The prisms with six different levels of flange作者: CLASP 時(shí)間: 2025-3-24 22:08 作者: MELON 時(shí)間: 2025-3-25 01:28 作者: 膽汁 時(shí)間: 2025-3-25 03:41 作者: Pandemic 時(shí)間: 2025-3-25 10:06
https://doi.org/10.1057/9780333982990 fact, bridges and viaducts represent key components of the transportation network, and therefore they increasingly draw infrastructure managers’ attention. The present work is the result of a project carried out by Politecnico di Milano, consisting of a large experimental campaign conducted on a se作者: Formidable 時(shí)間: 2025-3-25 14:40 作者: 侵害 時(shí)間: 2025-3-25 15:49 作者: 生存環(huán)境 時(shí)間: 2025-3-25 23:29
Learning for Ranking Aggregation,r, the barely visible impact damages (BVIDs) in CFRP laminates may cause a significant degradation in the performance, seriously affecting the safety of daily use. Hence, structural health monitoring (SHM) systems that can detect the BVIDs in mobilities are urgently needed. In this research, we atte作者: 干旱 時(shí)間: 2025-3-26 02:22
School Factors That Make a Difference, FFT method was used to perform the modal identification obtained from field tests, and the Transitional Markov Chain Monte Carlo (TMCMC) algorithm is employed to generate samples. Although updating as many parameters as possible is the ideal model update process, it is not practical to identify all作者: integral 時(shí)間: 2025-3-26 04:32
Commodification and the Market, system is developed to define new modal parameters to be monitored. Parameters from OMA make it possible to characterize the structure using experimental modal analysis (EMA). The method is applied to a bridge pier subjected to scour. Indeed, a prestressed concrete, motorway bridge on A71 in France作者: SYN 時(shí)間: 2025-3-26 09:13 作者: interlude 時(shí)間: 2025-3-26 13:44 作者: Rodent 時(shí)間: 2025-3-26 18:19 作者: 動(dòng)機(jī) 時(shí)間: 2025-3-27 00:49 作者: Diastole 時(shí)間: 2025-3-27 04:22
Learning Professional Ways of Beingnt vibration tests were performed on the footbridge to extract the modal parameters of the structure such as natural frequencies, damping ratios, and mode shapes. The modal properties were identified from ambient vibration tests adopting the Stochastic Subspace Identification (SSI) technique. The av作者: ostrish 時(shí)間: 2025-3-27 09:04 作者: conquer 時(shí)間: 2025-3-27 12:25 作者: 瘋狂 時(shí)間: 2025-3-27 14:13
Learning with Damaged Colonial Places civil structures, such as thermal and nuclear power plants. Acoustic emission (AE) detection can be potentially used to establish the real-time passive SHM method. Conventional AE sensors are made from piezoelectric materials, whose operational temperature is limited up to 200?°C. Hence, it is diff作者: Kinetic 時(shí)間: 2025-3-27 21:25 作者: 前兆 時(shí)間: 2025-3-28 00:28
Conclusions and Policy Implications,hose data to the web server. The developed sensor unit consists of Raspberry Pi 3B, digital MEMS accelerometer and Low Power Wide Area (LPWA) network device. Having the transmitted data volume limitation, LPWA network device advantageously enables long-distance communication with such a low power as作者: covert 時(shí)間: 2025-3-28 05:31 作者: 合法 時(shí)間: 2025-3-28 06:19
https://doi.org/10.1057/9780333982990f each analyzed viaduct span, as well as the characterization of the trains travelling on the line. Through the adoption of an operation modal analysis (OMA) technique, it was then possible to construct a large database of the dynamic features concerning the studied viaducts. This database may be ex作者: 正面 時(shí)間: 2025-3-28 10:51
https://doi.org/10.1007/978-1-4419-0582-6of numerous measurement locations for its identification (Cao et al. in Smart Mater Struct 26:043001, 2017). In this study, amplitude dependence of damping ratio was also investigated, since a change in the modal damping ratio can be used for damage identification but its dependence on amplitude rem作者: 消耗 時(shí)間: 2025-3-28 15:52 作者: FLEET 時(shí)間: 2025-3-28 20:39 作者: 法律 時(shí)間: 2025-3-28 23:54 作者: 刺耳的聲音 時(shí)間: 2025-3-29 04:54
Margaret Snowling,Kate Nation,Valerie Muterble to manage with a smaller number of sensors. In the proposed method, a spatiotemporal covariance matrix is estimated using the ACFs of the training data from the undamaged structure under different environmental or operational conditions. Using novelty detection techniques, an extreme value stati作者: 飛行員 時(shí)間: 2025-3-29 07:13 作者: 團(tuán)結(jié) 時(shí)間: 2025-3-29 15:13
https://doi.org/10.1007/978-1-4615-0885-4d by monitoring the scour depth. The decision to install a monitoring system on a bridge must be balanced by the financial benefit of doing so, as limited resources often need to be carefully rationed. The Value of Information (VoI) from Bayesian decision analysis can be used to compute the benefit 作者: 輕推 時(shí)間: 2025-3-29 17:06 作者: Postulate 時(shí)間: 2025-3-29 22:44 作者: adumbrate 時(shí)間: 2025-3-30 02:15 作者: ascend 時(shí)間: 2025-3-30 07:48 作者: sparse 時(shí)間: 2025-3-30 10:16 作者: ALIBI 時(shí)間: 2025-3-30 13:28 作者: SOB 時(shí)間: 2025-3-30 18:52
Conclusions and Policy Implications,. The developed sensor unit would provide the useful information for estimating the damage situation in the area in which the building is located. The proposed sensor unit has been tested utilizing the opportunity of full-scale steel hospital building shake table experiments at the E-Defense.作者: 過(guò)去分詞 時(shí)間: 2025-3-30 22:29 作者: CULP 時(shí)間: 2025-3-31 04:46 作者: Feckless 時(shí)間: 2025-3-31 09:04 作者: Hemiplegia 時(shí)間: 2025-3-31 09:54
Assessing Structural Health State by Monitoring Peridynamics Parameters in Operational Conditionsby discretizing a system with the Bond Based PDs and using a micro-viscoelastic constitutive law at the bond level. Moreover, the authors show how the proposed peridynamic parameters are theoretically estimable with very robust techniques already used in SHM, such as the Stochastic Subspace Identifi作者: Outmoded 時(shí)間: 2025-3-31 17:19 作者: 暴行 時(shí)間: 2025-3-31 20:46
Vibration-Based Method for Structural Health Monitoring of a Bridge Pier Subjected to Environmental s developed by correlating operational modal parameters with data of external event. Finally, an assessment of the evolution of the structural health condition of the bridge in real time is carried out.作者: ABYSS 時(shí)間: 2025-3-31 22:30
Damage Detection and Localization Using Autocorrelation Functions with Spatiotemporal Correlationble to manage with a smaller number of sensors. In the proposed method, a spatiotemporal covariance matrix is estimated using the ACFs of the training data from the undamaged structure under different environmental or operational conditions. Using novelty detection techniques, an extreme value stati作者: 割公牛膨脹 時(shí)間: 2025-4-1 03:24
The Optimization Study of Apparent Damage Recognition Algorithm of Bridge Underwater Structuresimulation and parameter optimization can be done on the FCN full convolutional neural network model on a larger scale, and the image recognition algorithm will be improved. The data set simulation research results show that the crack damage identification accuracy obtained by the deep learning meth作者: habitat 時(shí)間: 2025-4-1 08:08 作者: CRACY 時(shí)間: 2025-4-1 11:07
Vibration Measurements on a Cable-Stayed Cyclist Arch Bridge for Assessment of the Dynamic Behaviouratural frequencies of the deck, 12 accelerometers were placed at different locations on the deck, after which the deck was excited using a 250?kg impact hammer at five locations. The first natural frequency of the cables varied between 2.11?Hz for the longest cable and 8.51?Hz for the shortest cable
