Structural and electronic properties of zinc oxide nanostructures via density functional theory

Structural and electronic properties of zinc oxide nanostructures via density functional theory

By using ab initio density functional theory we studied the structural and electronic properties of zinc oxide, monolayer, double layer graphenlike and nanoribbons with armchair and zigzag edges. In case the double layer, the effects of inter-layer coupling on the electronic structures, were observed. These results showed that the energy gap in the monolayer was closed by inter-layer coupling. It was found that the ZnO double layer has a metallic behavior. Our results showed zigzag ZnO ...

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جزوه ی کامل آموزش محیط آنالیز در نرم افزار کتیا Generative structural analysis آنالیز استاتیکی

جزوه ی کامل آموزش محیط آنالیز در نرم افزار کتیا Generative structural analysis آنالیز استاتیکی

جزوه ی کامل آموزش محیط آنالیز در نرم افزار کتیا Generative structural analysis آنالیز استاتیکی جزوه ی 47 صفحه ای جهت دریافت فایل کامل هر عنوان از طریق بخش پرداخت و دانلود در پایان معرفی هر محصول اقدام نمایید. پس از خرید علاوه بر لینک دانلود مستقیم سایت، فایل به ایمیل شما بصورت پیوست نیز ...

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Structural Health Monitoring Using the Hilbert-Huang Transform and Beating

Structural Health Monitoring Using the Hilbert-Huang Transform and Beating

In this paper, a combined approach to damage diagnosis of systems is proposed. The intention is to identify thenatural frequencies and the presence of damage. In a first step, the basic concept of the Hilbert HuangTransform is presented where the empirical mode decomposition is applied on the signal using a sifting processto obtain intrinsic mode functions exhibiting monocomponent behavior. In the next step, the Hilbert Transform isused to identify the frequencies from the well behaved ...

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REAL-TIME STRUCTURAL DAMAGE DETECTION USING WIRELESS SENSING AND MONITORING SYSTEM

REAL-TIME STRUCTURAL DAMAGE DETECTION USING WIRELESS SENSING AND MONITORING SYSTEM

A wireless sensing system is designed for application to structural monitoring and damagedetection applications. Embedded in the wireless monitoring module is a two-tier predictionmodel, the auto-regressive (AR) and the autoregressive model with exogenous inputs (ARX),used to obtain damage sensitive features of a structure. To validate the performance of theproposed wireless monitoring and damage detection system, two near full scale single-storyRC-frames, with and without brick wall system, ...

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Applications of Piezoelectric Materials in Structural Health Monitoring and Repair: Selected Research Examples

Applications of Piezoelectric Materials in Structural Health Monitoring and Repair: Selected Research Examples

The paper reviews the recent applications of piezoelectric materials in structuralhealth monitoring and repair conducted by the authors. First, commonly used piezoelectricmaterials in structural health monitoring and structure repair are introduced. The analysisof plain piezoelectric sensors and actuators and interdigital transducer and theirapplications in beam, plate and pipe structures for damage detection are reviewed in detail.Second, an overview is presented on the recent advances in the ...

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Real-time structural damage detection using wireless sensing and monitoring system

Real-time structural damage detection using wireless sensing and monitoring system

Abstract. A wireless sensing system is designed for application to structural monitoring and damagedetection applications. Embedded in the wireless monitoring module is a two-tier prediction model, the autoregressive(AR) and the autoregressive model with exogenous inputs (ARX), used to obtain damage sensitivefeatures of a structure. To validate the performance of the proposed wireless monitoring and damage detectionsystem, two near full scale single-story RC-frames, with and without brick wall ...

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Review of Vibration-Based Damage Detection and Condition Assessment of Bridge Structures using Structural Health Monitoring

Review of Vibration-Based Damage Detection and Condition Assessment of Bridge Structures using Structural Health Monitoring

As a part of vital infrastructure and transportation networks, bridge structures must function safely at alltimes. However, due to heavier and faster moving vehicular loads and function adjustment, such asBusway accommodation, many bridges are now operating at an overload beyond their design capacity.Additionally, the huge renovation and replacement costs always make the infrastructure ownersdifficult to undertake. Structural health monitoring (SHM) is set to assess condition and ...

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Review of Vibration-Based Damage Detection and Condition Assessment of Bridge Structures using Structural Health Monitoring

Review of Vibration-Based Damage Detection and Condition Assessment of Bridge Structures using Structural Health Monitoring

As a part of vital infrastructure and transportation networks, bridge structures must function safely at alltimes. However, due to heavier and faster moving vehicular loads and function adjustment, such asBusway accommodation, many bridges are now operating at an overload beyond their design capacity.Additionally, the huge renovation and replacement costs always make the infrastructure ownersdifficult to undertake. Structural health monitoring (SHM) is set to assess condition and ...

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Review of Vibration-Based Damage Detection and Condition Assessment of Bridge Structures using Structural Health Monitoring

Review of Vibration-Based Damage Detection and Condition Assessment of Bridge Structures using Structural Health Monitoring

As a part of vital infrastructure and transportation networks, bridge structures must function safely at alltimes. However, due to heavier and faster moving vehicular loads and function adjustment, such asBusway accommodation, many bridges are now operating at an overload beyond their design capacity.Additionally, the huge renovation and replacement costs always make the infrastructure ownersdifficult to undertake. Structural health monitoring (SHM) is set to assess condition and ...

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DAMPING: A SENSITIVE STRUCTURAL PROPERTY FOR DAMAGE DETECTION

DAMPING: A SENSITIVE STRUCTURAL PROPERTY FOR DAMAGE DETECTION

Data from vibration measurements opens a way to damage assessment by correlatingchanges in system dynamic parameters with damage indicators. Most methods proposed in theliterature are based on the measurement of natural frequencies or modal shapes and modelling damageas local reduction in structural stiffness. In some particular applications these methods, however, haveseveral practical limitations on account of their low sensitivity to damage. This paper shows thatdamping can be used as a ...

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