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166 articles for “resonant frequency”
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Design and Simulation of a MEMS Piezoresistive Floating Element Shear Stress Sensor
Abstract: The paper presents the modelling, simulation and comparison of a MEMS piezoresistive (PZR) floating element shear stress sensor with various dimensions which has potential applications in underwater measurements. The floating element design utilizes a plate element of small mass suspended by four tethers. PZR patches are implanted at the root of the tethers. Shear stress is inferred by the deflection in the tethers and the corresponding change in the resistance …
Published in Recent Trends in Sensor Research & Technology · Vol. 2, Issue 1, 2015 · pp. 11–16 Read article
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Mathematical Design and Simulation of MEMS based Acoustic Sensor
Abstract: This paperfocuses on design and simulation of MEMS Acoustic Sensor based on piezoelectriczinc oxide (ZnO) thin film using single crystal silicon wafer. The thickness ofsilicon diaphragm is 35 and the size of diaphragm is 3mm *3mm. Thepaper provides analysis and exhibit enhanced resonance frequency 51.058 KHz.
Published in Recent Trends in Sensor Research & Technology · Vol. 3, Issue 1, 2016 · pp. 10–13 Read article
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Dynamic Analysis of Isotropic Annular Plate using Finite Element Method
Abstract: The vibration and harmonic response of isotropic annular plates have been examined in order to determine the frequency parameters and resonance amplitude. The employment of finite element is made in this study. The effects of thickness ratios and diameter ratios are investigated on natural frequencies and resonance point for isotropic annular plates. Different combinations of three types of boundary conditions i.e. clamped-clamped, clamped-free and free-clamped end conditions are considered at …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 3, 2018 · pp. 7–18 Read article
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Design Of Multi-Bit Chipless RFID Tag Using Hybrid Resonator For Retail And Healthcare Applications
Abstract: Resonators play a very important role in chipless radio frequency identification (RFID) systems. To overcome the challenges like cost, compact dimension, and high coding capacity, chipless transponders are highly facilitated for the advancement in chipless RFID technology. This research aims to investigate innovative design options for passive RFID transponders operating in a wide range of frequencies in order to address the aforementioned issues and contribute to RFID technology advancement. To …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 2, 2021 · pp. 35–43 Read article
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Behavior of Surface Polaritons on Cylindrical Semiconducting Materials at Nanoscale with Radius Dependence Frequency
Abstract: Surface plasmon resonance (SPR) is a physical property of the surface to investigate the important properties of optical behaviors for nanomaterial and biomaterial. It involves the excitation of electrons within a thin metal sheet by incident light at a specific angle, prompting them to propagate parallel to the surface. This sensitivity to external factors, such as changes in the refractive index of the surrounding medium due to molecular adsorption, underscores …
Published in Research & Reviews : Journal of Physics · Vol. 13, Issue 2, 2024 · pp. 1–7 Read article
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Electromagnetic Transients and Frequency Characteristics of a Loaded Horizontal Conductor above Lossy Earth
Abstract: This paper addresses the electromagnetic transients and the frequency characteristics of a thin conductor horizontally suspended above lossy earth. The analysis takes into consideration the receiving-end termination and the earth parameters. The effect of the ground return is represented by incorporating the concept of the complex penetration depth in the formulation of the line’s equations in the s-domain. The resulting simultaneous differential equations governing the voltage and current are solved …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 1, 2018 · pp. 29–41 Read article
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Comparative Study of Torque Ripple Minimization of PMSM using PI and Proportional Resonant (PI-RES) Controller
Abstract: The minimization of speed ripple of the permanent magnet synchronous motors (PMSM) in low speed range becomes a major problem while applying the PMSM to refrigerant system. Earlier, an iterative learning controller was applied in conjunction with the conventional proportional integral (PI) speed controller to minimize the speed ripple. Here, a frequency variable resonance controller is applied in conjunction with the conventional proportional integral speed controller as a PI-RES controller, …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 3, 2018 · pp. 17–23 Read article
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A Compact Umbrella Shaped Patch Antenna using DGS for Dual/Triple/Quad Band Applications
Abstract: In this paper, a compact Umbrella shaped microstrip patch antenna for Quad band applications specially for X band, Ku band and K band applications is presented. The antenna is simulated using the Ansys soft HFSS simulator. The size of the antenna is 25 mm×25 mm ×1 mm and printed on an FR4 substrate. Defected ground structure in the form of concentric circular rings is used to increase the bandwidth of …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 3, 2015 · pp. 36–44 Read article
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Practical Implementation of Textile Antenna for C-Band Application
Abstract: This article is explained with the design and fabrication of flexible wearable textile antennas integrated with the newly introduced C band application. In this paper, a compact crescent moon shape patch antenna for C-band application is presented. The presented antenna is designed on jeans substrate with dielectric constant of 1.7. The overall size of antenna is 53.3x59.9x1 mm. This antenna has been simulated using CST software. The presented antenna resonates …
Published in Recent Trends in Sensor Research & Technology · Vol. 4, Issue 1, 2017 · pp. 18–22 Read article
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Analysis of Two way Continuous Bridge under Moving Loads
Abstract: The analysis of dynamic behavior of bridge structures that are subjected to moving loads has been one of the research interests in recent years. Specifically in railway bridges, Resonance occurs when the load frequency is equal to a multiple of natural frequency of the structure. Resonance vibrations have been observed in railway bridges especially subjected to High Speed Lines. They are caused mainly because of two reasons one is the …
Published in Journal of Structural Engineering and Management · Vol. 6, Issue 2, 2019 · pp. 7–12 Read article
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Dynamic Analysis of Railway track and SSI effect
Abstract: The analysis of dynamic behavior of bridge structures that are subjected to moving loads has been one of the research interests in recent years. Specifically in railway bridges, Resonance occurs when the load frequency is equal to a multiple of natural frequency of the structure. Resonance vibrations have been observed in railway bridges especially subjected to High Speed Lines. They are caused mainly because of two reasons one is the …
Published in Journal of Structural Engineering and Management · Vol. 6, Issue 1, 2019 · pp. 37–41 Read article
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The Frequency and Transient Analyses of a High Voltage Bushing/Transformer Cascade
Abstract: This paper investigates the frequency characteristics and electromagnetic transients of a typical system composed of a high voltage bushing and a power transformer connected in cascade. Detailed distributed-parameter Laplace-domain models are adopted for the digital simulations. These parameters include, among others, the transformer winding’s series inductance, its capacitance to ground and the inter-turn capacitances. Moreover, the number, the geometrical data of the capacitively-graded bushing’s conducting foils and the dielectric insulating …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 42–53 Read article
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Tri-Band Edge-Cut Rectangular Microstrip Patch Antenna on Composite Substrate for RF Energy Harvesting in IoT Networks
Abstract: The increasing use of Internet of Things devices underscores the pressing need for sustainable energy solutions, since traditional batteries necessitate regular replacement and constrain scalability. Radio frequency energy harvesting is a viable option; nonetheless, antenna design continues to provide a significant problem owing to the requirements for compactness, efficiency, and multi-band functionality. A hybrid composite substrate configuration combining FR4 (εr = 4.3) and RT Duroid (εr = 2.2) is employed …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 867–883 Read article
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Developing an Emperical Equation for the Diameter of DWNT and RBM Frequency of RRS
Abstract: Many experiments of resonant Raman spectroscopy have been carried out to successfully assign the radial breathing mode frequency of the inner and outer tube of double walled carbon nanotube. Experimental values show clear indication that these frequencies depend heavily on inter tube interaction. All the previous efforts to establish a relation between RBM frequency and diameter have not taken the inter-tube distance factor into account. Here, for the first time …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 18, Issue 3, 2016 · pp. 23–26 Read article
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T-Shape Antenna with Defected Ground for 5G Applications
Abstract: In this paper, for 5G cellular applications, a novel microstrip patch antenna with high gain and wide bandwidth MMW frequencies is presented. The antenna is designed as single T-shaped radiating patch on the top layer of substrate and for improving the bandwidth and return loss characteristics, partial ground is incorporated on the bottom plane. A 50Ω matched lumped port is used for the feeding. In addition, the proposed antenna is …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 6, Issue 1, 2019 · pp. 23–27 Read article
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CPW fed Pyramidal Antenna for Dual Band Application
Abstract: In this study, a pyramidal shaped coplanar waveguide fed antenna with modified ground and radiating structure for GSM and WLAN applications is presented. The antenna is resonating at different frequencies 1.8/5.2 GHz, which is covering GSM and WLAN (IEEE802.11a). Antenna has simple planar structure of 39×37×1.6 mm3 using RT duroid substrate dielectric constant 2.2 and loss tangent of 0.002 with a slit on ground plane. The proposed antenna achieved return …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 5, Issue 3, 2018 · pp. 1–5 Read article
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Failure Analysis of Bearing: A Review
Abstract: Ball and rolling element bearings are perhaps the most widely used components in industrial machinery. They are used to support load and allow relative motion inherent in the mechanisms involved, preventive measures and recommended corrections to enhance the life of the bearing. In this paper, the most widely referred mechanisms are reviewed and discussed, and their limitations are addressed. Heat flows within a bearing, scanning electron microscope (SEM), Fourier infrared …
Published in Trends in Machine design · Vol. 3, Issue 3, 2016 · pp. 43–59 Read article
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Use of Liquefiable Materials for Vibration Isolation
Abstract: Abstract Trench barrier isolation is very popular but less adopted technique for the isolation of buildings and important structures. Here the structures are to be protected against the energetic surface waves, which are confined up to 3–4.5 m depth below the surface. Several types of trenches with different in-fill materials have been tried with some degree of success. The difficulty comes from the nature of the waves, which are a …
Published in Journal of Geotechnical Engineering · Vol. 3, Issue 3, 2016 · pp. 33–36 Read article
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A Ventilated Dual-Function Photonic–Phononic Metasurface for Simultaneous Passive Radiative Cooling and Low-Frequency Noise Mitigation in Building Envelopes: Conceptual Design and Computational Feasibility Analysis
Abstract: Acoustic metamaterials for sound insulation and photonic/radiative-cooling metamaterials for passive thermal management have each matured separately for building-envelope retrofit, but existing studies address ventilation, acoustic damping and radiative thermal control in isolation, and no reported unit-cell architecture co-designs all three within a single shared structure. This gap persists because materials that are acoustic absorptive are generally dense and structurally opaque, whereas materials that are highly solar-reflective are conventionally applied to …
Published in International Journal of Energy and Thermal Applications · Vol. 4, Issue 2, 2026 Read article
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Vortex Bladeless Windmill for Power Generation
Abstract: The energy requirement of India is going to increase manyfold in the coming years which can not be met by fossil fuel due to its impact on global warming. In order to meet the increasing energy requirement renewable energy source should be utilised extensively. India has the fifth largest installed wind power capacity in the world. Bladeless wind power generation is a radically new technology to capture wind energy. It …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 11, Issue 3, 2021 · pp. 30–42 Read article