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21 articles for “Vibration amplitude”
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Effectiveness of Extensional Damping Using Rubber as Layer
Abstract: Structural damping treatments are free layer damping and constrained layer damping, made of metal and viscoelastic layer combinations which help to reduce vibrations. A free layer damping (FLD) treatment also known as Extensional Damping is formed by applying a coating of a damping material to one side of a structure. The treatment may be symmetric or asymmetric, and applied to beams, plates or shells in bending or in tension. In …
Published in Trends in Mechanical Engineering & Technology · Vol. 7, Issue 3, 2017 · pp. 36–39 Read article
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Investigations into the Mechanical and Thermal Properties of Fe3C Compound: A Comprehensive Analysis
Abstract: Exploration of mechanical properties of Fe3C powder using Williamson-Hall analysis by using Mechanical alloying technique. The primary objective of this study is to investigate the lattice strain (LS) and nanocrystalline size (CS) in an Fe3C produced from powder using the Mechanical Alloying Method (MAM). By the repeated mechanical crushing, the LS created by MAM is expected to decrease while the CS is anticipated to reduce the particle size. To accomplish …
Published in Journal of Polymer & Composites · Vol. 11, Issue 12, 2023 · pp. 225–234 Read article
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Study on the Method of Constructing a System of Linear Equations for Calculating Aerodynamic Derivatives
Abstract: The aerodynamic derivatives can be calculated from the unsteady hydrodynamic forces experienced by the harmonic-oscillating vehicle. Until now, unsteady flow field analysis in aerodynamic derivative calculations has been applied mainly to thin bodies based on potential theory MSC. Nastran is a typical application based on potential theory MSC. Natran can calculate the aerodynamic derivatives of the vehicle relatively well in the subsonic region, but in the supersonic region, the fuselage …
Published in Journal of Experimental & Applied Mechanics · Vol. 16, Issue 3, 2025 · pp. 14–24 Read article
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An Overview on Energy Harvesting Using Piezoelectric Material for Wi-Fi Systems
Abstract: The rapid proliferation of wireless-networked devices has intensified the demand for sustainable, maintenance-free power sources that can keep small-scale Wi-Fi modules operational in hard-to-reach or infrastructure-limited environments. This study investigates the feasibility of harvesting ambient mechanical energy using piezoelectric transduction technology and directly feeding the harvested power to a low-power Wi-Fi communication subsystem. A compact energy-harvesting module was engineered from lead-zirconate-titanate (PZT) cantilevers with resonant frequencies tuned to the dominant …
Published in International Journal of Electro-Mechanics and Material Behaviour · Vol. 4, Issue 1, 2026 · pp. 56–63 Read article
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Vibration Analysis Of Pump Shaft Using Finite Element Analysis Software: A Review
Abstract: Rotating shaft and other components in pump system revolving at speed close to the natural frequency of the system are unsafe because at natural frequency the amplitude of vibration is highest and it generate the excessive stresses which can cause rotating components failure. The objective of the review paper is to study the vibration characteristics of pump shaft system of finite element method in software module. The knowledge about the …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 1, 2018 · pp. 46–54 Read article
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Nanocrystalline Silver: Synthesis by High-Energy Ball Milling, X-ray Debye Temperature Analysis, and Diverse Applications
Abstract: This research paper presents a comprehensive investigation into transforming micro-sized silver (Ag) powder into nanostructured Ag powder by applying high-energy ball milling. The ball milling process was executed over a total duration of 20 hours, with periodic sampling every 4 hours to monitor the evolving characteristics of the material. The particle size, lattice strain, Debye-Waller factor, and root mean square amplitudes of vibration were calculated by using X-ray powder diffraction …
Published in Journal of Polymer & Composites · Vol. 11, Issue 12, 2023 · pp. 140–148 Read article
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Analysis of Simply Supported and Clamped-Clamped Beam Resting on a Pasternak Foundation Subjected to Moving Load with a Damping Term
Abstract: A comparative analysis of simply supported and clamped-clamped Bernoulli-Euler beams resting on a Pasternak foundation under the action of a concentrated moving load with a damping term, when the inertia effect of the moving load is considered in its analysis, was investigated in this study. The governing equation was solved by representing the Dirac delta function through a Fourier cosine series and applying a combination of analytical techniques, including the …
Published in Journal of Experimental & Applied Mechanics · Vol. 16, Issue 3, 2025 · pp. 42–59 Read article
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Design and Analysis of Vibration Table for SMAW Welding
Abstract: The welding is the joining process and its joint quality and mechanical strengthbecome the necessities looking to the end application of the product. Welding defect like lack of penetration in welding is one of the critical defect and directly impacting the strength of joint and rejection. From the literature, it’s found that external controlled vibration is one of the solution for quality weld. The weld defect has beensignificantly minimize by …
Published in Journal of Experimental & Applied Mechanics · Vol. 14, Issue 1, 2023 · pp. 1–17 Read article
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Differential Model of Wave Vibration on Strings and Rods
Abstract: Vibration, as a physical phenomenon, plays a multifaceted role in both natural and engineered systems. Beyond its essential contribution to communication through sound and speech, it finds critical application in various technological domains. For instance, in the design of stringed musical instruments such as violins and guitars, precise manipulation of string vibrations defines tonal quality and musical resonance. Similarly, metal rods in tuning forks exhibit vibrational properties that are finely …
Published in Research & Reviews : Journal of Physics · Vol. 14, Issue 1, 2025 · pp. 17–21 Read article
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Effects of Plasticizers on Structures of Chemical Functional Groups, Morphologies, Water Vapor Permeability, and Thermal Properties of HPMC/BW Biopolymer Films
Abstract: Food preservation is one of the fields that many researchers are interested in, especially in the epidemic period like COVID-19 today. The better food or agricultural products are preserved for a long time, the more it ensures social stability for state management related to food security for people. This paper introduces one kind of biopolymer films with investigation on effect of plasticizers to its characteristics. In order to produce biopolymers, …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 10–20 Read article
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CONDITION BASED MONITORING AND FAULT DIAGONISTICS OF A MACHINE
Abstract: This piece of study shows the existing condition based monitoring and fault diagnostics techniques in a machine. Vibrations are produced in every machine and their amplitude depends upon the type of faults present in the machine, for example, gear fault, journal bearing, rolling contact bearing, flexible coupling and electrical machine faults. The main challenge for the condition monitoring of the machines is the cost and complexity of condition machine monitoring …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 2, 2018 · pp. 84–89 Read article
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Dynamic Behavior of Coal Ash
Abstract: Coal ash is deposited in large quantities in the ash pond. It is used as structural fill and for dyke construction. The behavior of ash under dynamic conditions is not well investigated. The present work attempts to quantify some of the parameters, which influences the dynamic stability especially liquefaction potential of coal ash. Several investigations conducted on coal ash suggest that ash fills have low SPT value. This supports the …
Published in Journal of Geotechnical Engineering · Vol. 1, Issue 2, 2014 · pp. 7–11 Read article
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Condition Monitoring of a Round Bar with a Defect Using Vibration Analysis
Abstract: As an energy-saving and high-efficient stress relieving process, vibratory stress relief [VSR] influence of on fatigue life is still explicit and needs further investigation. Standard specimens are manufactured to study the VSR effects on 2014 T6 aluminum alloy fatigue behavior. Dynamic stresses generated during vibration are measured by strain gauge and the residual stresses with and without VSR are compared to validate the stress relieving effects. Eventually, fatigue tests are …
Published in Trends in Machine design · Vol. 6, Issue 2, 2019 · pp. 5–7 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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Mechanism of Intensive Gas and Fluid Mixture in the Process of Vibroturbulization and Its Technological Applications
Abstract: Previously conducted experimental studies have established that in a certain narrow frequency range and upon reaching a certain value of the amplitude of water oscillations in a sealed vessel with above-water air shell, subjected to vertical vibration, a resonant phenomenon occurs, called “vibroturbulization”, leading to intensive mixing of media of different density. The studies carried out were purely experimental in nature and could not reveal the physicochemical mechanism of occurrence, …
Published in Recent Trends in Fluid Mechanics · Vol. 9, Issue 2, 2022 · pp. 21–34 Read article
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Thermo-Mechanical Behavior and Intelligent Optimization of Contact Temperature During Ultrasonic Vibration-Assisted Single-Pole Magnetic Abrasive Finishing of Zinc Alloy
Abstract: This study proposes a new integration of the experimental analysis, multi-physics finite element modelling (FEM) and machine learning (ML) optimisation of contact temperature (CT) in ultrasonic vibration-assisted single pole magnetic abrasive finishing (UV-SPMAF) of zinc alloy. The three gaps of the research are addressed: (i) The absence of a multi-physics FEM model that can couple electromagnetic, thermal and structural fields for UV-SPMAF of zinc; (ii) No quantified contribution of the …
Published in International Journal of Manufacturing and Production Engineering · Vol. 4, Issue 2, 2026 Read article
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Experimental Investigations on Concentric Flow Dry Ultrasonic Assisted Wire Electric Discharge Machining (CFDUAWEDM) Using Regression Analysis
Abstract: This paper presents an application of concentric flow mode of dry dielectric (compressed air) supply for ultrasonic assisted wire electric discharge machining process (CFDUAWEDM). The concentric flow mode of dielectric supply using ultrasonic assistance is expected to offers improved surface integrity, environmental and operator friendliness during wire electric discharge machining (WEDM) process. Experimental set up was developed wherein, the ultrasonic vibration was applied to the electrode wire using an ultrasonic …
Published in Trends in Machine design · Vol. 3, Issue 2, 2016 · pp. 33–43 Read article
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Study of Generation of Waveform of Output Voltage for Voltage and Power Maximization in VEH Device
Abstract: AbstractVibration energy harvester is good source for sensors; and power conversion efficiency of electromagnetic devices is very low. Size of the device is one of the limitations for maximum voltage and power generated. This paper discusses various ways and combinations for voltage maximization. Maximum voltage is generated at resonance, also initial position of magnet at rest plays important role in voltage generated. Value of maximum voltage generated does not always …
Published in Recent Trends in Sensor Research & Technology · Vol. 4, Issue 1, 2017 · pp. 1–6 Read article
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Study of Heat Transfer in a Time Dependent Vertically Oscillating Micropolar Liquid
Abstract: AbstractThe study involves the vertical time periodic vibration of the system. This leads to the appearance of a modified gravity term in basic equation, collinear with actual gravity, in the form of a time-periodic field perturbation and is termed as gravity modulation or g-jitter in the literature. The aim of this study is to find the effect of small amplitude of gravity modulation on the onset of thermal convection between …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 1, 2018 · pp. 63–74 Read article
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FLEXURAL VIBRATION OF NON-UNIFORM BEAM ON BI-PARAMETRIC FOUNDATION UNDER HARMONIC MOVING LOAD WITH NON-CLASSICAL BOUNDARY CONDITIONS
Abstract: The dynamic response to harmonically varying moving loads of non-uniform elastic beam resting on bi-parametric foundation with non-classical boundary condition, time dependent in particular is examined in this paper. Here, the beam is considered non-uniform, with the moment of inertia and the distributed mass varying continuously along the span L as functions of the position 𝑥. In order to guarantee a more stable structure and a reduce risk of resonance, …
Published in International Journal of Mechanical Dynamics and Systems Analysis · Vol. 3, Issue 2, 2025 · pp. 28–42 Read article