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Showing 1 to 20 of 176 for “"structural damage"”.
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Structural damage detection using ambient vibrations
… ambient random vibration response to detect damage level and location. The use of ambient vibration is advantageous because excitation is caused by service conditions such as normal vehicle traffic on a highway bridge, train passage on a railroad bridge, or wind loads on a tall building. This …
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Structural Damage Classification using Support Vector Machines
… to classify crack and corrosion metallic damages using a time-frequency representation method and support vector machines is investigated. Piezoelectric ceramic actuators are utilized to generate guided wave signals on a set of aluminum beam coupons with different damage features, such as …
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Mobile hyperspectral imaging for structural damage detection
… their poor performance in object detection when structural cracks coexist with other complex scenes. A mobile hyperspectral imaging system is developed in this work, which captures hundreds of spectral reflectance values at a pixel in the visible and near-infrared (VNIR) portion of the …
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Structural Damage Detection Utilizing Experimental Mode Shapes
<p>A method of locating structural damage is developed and tested to aid in the evaluation of structural health. This method will help minimize the cost of structural inspection and repair by informing engineers of where damage, due a seismic event, has occurred before the removal of finishes for …
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Structural damage detection using signal-based pattern recognition
Civil structures are susceptible to damages over their service lives due to aging, environmental loading, fatigue and excessive response. Such deterioration significantly affects the performance and safety of structure. Therefore, it is necessary to monitor the structural performance, detect and …
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Automated structural damage detection using one class machine learning
… using sensors can help identify and detect damage, potentially prolonging the life of structures and preventing disasters. Wireless sensor systems promise to make this technology more affordable and more widely applicable. Data driven structural health monitoring methodologies take raw …
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Locating Structural Damage in Real Time Using Contrast Maximization
A technique to identify structural damage in real time using limited instrumentation is presented, Contrast maximization is used to find the excitation forces that maximize the difference in the response of the damaged structure and the analytical response of the undamaged structure. The optimal …
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Vibration-based finite element model updating and structural damage identification
Damage and material deterioration could lead to structural failure with unknown consequences. Structural health monitoring strategy based on vibration measurements for existing aging structures offers a promising technique for effectively managing the deteriorating structures. The main objectives …
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Methods for real-time actuator-sensor-failure and structural damage detection
… on isolation and quantification aspects of structural damage detection using global damage detection methods. It includes two parts: (1) isolation and detection of failure of the actuator/sensor/structural elements in real-time using interaction matrix formulation and parity based method, …
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Using Generative Adversarial Networks to Classify Structural Damage Caused by Earthquakes
<p>The amount of structural damage image data produced in the aftermath of an earthquake can be staggering. It is challenging for a few human volunteers to efficiently filter and tag these images with meaningful damage information. There are several solution to automate post-earthquake …
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Structural Damage Assessment Using Artificial Neural Networks and Artificial Immune Systems
<p>Structural health monitoring (SHM) systems have been technologically advancing over the past few years. Improvements in fabrication and microelectronics allow the development of highly sophisticated sensor arrays, capable of detecting and transmitting an unprecedented amount of data. As the …
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The applicability of neural network systems for the structural damage diagnosis
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Advances in structural damage assessment using strain measurements and invariant shape descriptors
Thesis (Ph. D.)--Michigan State University. Department of Mechanical Engineering, 2010
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Design And Evaluation of Flexibility-Based Structural Damage Localization Using Wireless Sensor Networks
… We designed and implemented a system to localize damages on structures with a WSN by detecting the change in structure flexibility. This method has been validated to work well on bridges like a cantilever beam and a truss. It is also possible to be extended to other type of structures. Different …
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Structural Damage Detection and Assessment From Spatially Sparse and Noise -Polluted Modal Response
A global damage detection and assessment algorithm is developed based on a parameter estimation method using the measured modal response of a structure. Damage is characterized by a reduction in a constitutive property of a parameterized finite-element model of the structure between two discrete …
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Online Joint Identification of Structural Dynamic Response Anomalies and Structural Damage Using Limited Data
Structural Health Monitoring (SHM) systems aim to enable real-time assessment of structural conditions by continuously collecting structural response data through sensor networks, while leveraging advanced techniques for data processing and analysis. However, their practical application remains …
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Inverse Problems In Structural Damage Identification, Structural Optimization, And Optical Medical Imaging Using Artificial Neural Networks
… The inverse problems investigated are: 1) damage detection in structures, 2) detection of an anomaly in a light-diffusive medium, such as human tissue using optical imaging, 3) structural optimization of fiber optic sensor design. All of these problems require solving highly complex inverse …
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From structural damage assessment to functionality estimation: A comprehensive modeling approach for buildings subjected to hurricane winds
… of natural hazards can compromise buildings structurally and functionally. Building structural damage can cause immediate consequences such as injury and death, while building functionality loss can cause extensive socioeconomic disruptions, such as population dislocation and business …
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Arsenic in drinking water caused ultra-structural damage in urinary bladder but did not affect expression of DNA damage repair genes or repair of DNA damage in transitional cells
… is inhibition of DNA damage repair. In laboratory animals, urinary bladder transitional cell carcinoma has only been observed in dimethylarsinic acid [DMA(V)]-exposed F344 rats. The goal of the present studies was to investigate inhibition of DNA repair as a mode of …
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Seismic Performance and Damage Risk of Modular CLT Housing Using Nonlinear Time History Analysis
… unconditional probabilities of experiencing non-structural damage and collapse within 50 years for ten representative locations. The houses use the latest platform-constructed CLT shear wall lateral-force resisting system included in ASCE 7-22 (2022) and were designed using prescriptive …
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