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Simulation studies of vibration isolation using electromagnetic damper
Published 2021“…This paper presents the review of electromagnetic damper as a vibration/isolation material. A bunch of articles about vibration and suspension system was reviewed and the key factors that contribute to electromagnetic damper was identified. …”
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DFT calculation of vibrations in the clusters of zinc and oxygen atoms
Published 2013“…We have calculated the vibrational frequencies of zinc oxide by using the density-functional theory. …”
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Vibration based piezoelectric energy harvesting utilizing bridgeless rectifier circuit
Published 2016“…In this paper, a voltage doubler and bridgeless boost rectifier power electronic converter is proposed to increase the energy harvesting output voltage from piezoelectric vibration based transducer. The conventional full-wave diode bridge rectifier and boost converter for energy harvesting system increases significant voltage drop and power losses in the circuit. …”
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Effects of plucking force to fundamental frequency of sound and body vibration of sape
Published 2019“…The sound and vibration were collected using a microphone and accelerometer. …”
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Ab initio calculation of vibrational frequencies in a glassy state of selenium
Published 2010“…We used the density functional theory to calculate the vibrational frequencies of clusters of atoms. We obtained the bond distances and angles for which the energy of the Schršdinger equation is minimum. …”
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Measurement of damping capacity of pultruded glass fibre- reinforced composite by forced vibration technique
Published 1992“…The effect of strain amplitude and frequency on the loss factor of glass fibrereinforced composite (GFRC) have been investigated by forced vibrations of double cantilever rod specimens. The tests were conducted at room temperature in the frequency range of 70Hz to 320Hz and at atmospheric pressure since the effect of air damping on the rod shape specimens is likely to be small. …”
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Solving a backpack vibration system using fourth-order runge-kutta methods
Published 2013“…A backpack vibration system involving ordinary differential equations has been developed in this study. …”
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Vibrational analysis of microtubules embedded within viscoelastic medium using orthotropic Kelvin like model
Published 2019“…We found that due to mechanical coupling of these components with the elastic medium, the flexural vibration is increased and radial frequencies in all modes are increased considerably while other vibrational modes are not affected that much.…”
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Evaluation of ground vibration resulting from a heavy vehicle passing over transverse rumble strips : a case study in Kluang Road FT050
Published 2021“…However, the presence of a TRS causes unevenness on the road surface and may result in ground vibration when heavy vehicles passes it. This ground vibration may cause discomfort to the people living adjacent to the road. …”
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Dynamic performance evaluation of ultrasonic composite horn for machining soft and brittle composites
Published 2023“…Ultrasonic horn (USH) is a key component in high intensity power ultrasonic systems to enhance vibration amplitude at tool end (VATE). Due to high intensity ultrasonic operating frequency of at least , horn may be exposed to high stress levels leading to failure. …”
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An evaluation of ride quality in lift systems of selected public high-rise buildings in Abuja, Nigeria
Published 2022“…Instruments like the WT85 Digital Sound Level Meter and Smart Sensor Vibration Meter alongside a checklist were used for data collection on lift cabin interior sound level and vibration during acceleration. …”
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The study of polymer material characterisation using M-Z-N statistical analysis method
Published 2016“…Experimental procedure is done based on non-destructive testing (NDT) concept by tapping the specimens using an impact hammer within a specific range of impact force, while accelerometer sensor Endevco 751-100 is used to detect the vibration produced. The detected vibration and the impact force signal which is triggered by impact hammer are captured using NI 9234 data acquisition device and computer. …”
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Pattern recognition for HEV engine diagnostic using an improved statistical analysis
Published 2019“…Piezo-film sensors were mounted on the Internal Combustion Engine (ICE) wall of each hybrid vehicle for vibration signal measurements. The engine runs at different speeds, the vibration signals were then recorded and analysed using the Z-freq technique. …”
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Natural dye sensitizer in dye sensitized solar cell
Published 2016“…The FTIR result of the natural dye shows the present of intermolecular H-bond, C=O stretching vibration, C-O-C stretching vibration, C=C bending and C-H bending which was due to the component of anthocyanin, carotenoids and chlorophyll. …”
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Pemisahan zarah mengguna teknik ayak: Kesan parameter pengoperasian ke atas kecekapan
Published 2000“…In this case, investigation on the effect of several operating parameters such as time, vibration frequency, percentage of coarse (oversize) in the feed material and total loading on the overall efficiency of the separation process has been carried out using solid mixtures of sand and glass beads. …”
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Musculoskeletal problems and its influencing factors among automobile factory workers, 1999
Published 2006“…Chi square and t tests showed there were associations found between harmful biomechanical problems e.g. awkward postures, lifting and carrying; vibration at workplace; repetitive movements; uncomfortable workplace; lack of rest and experience and psychological factors with musculoskeletal problems. …”
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On the Bachelor Program in Engineering Physics for underdeveloped and developing countries: vision for global competitiveness
Published 2019“…In this paper, seven clusters are proposed, namely generic knowledge, basic knowledge, instrumentation and control, energy and environmental engineering, materials, acoustics and vibration, and photonics. The cluster courses can be distributed in each semester depends on the department strategy of achieving the learning outcomes. …”
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On-line detection method for outliers of dynamic instability measurement data in geological exploration control process
Published 2017“…Considering the characteristics of the vibration data detected by the unstable regulation process in the grinding and grading control system and the shortcomings of the traditional wavelet anomaly detection method, an online anomaly detection method combining autoregressive and wavelet analysis is proposed. …”
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Elastic investigation of piers numbers effects in transverse direction on the stiffness of continuous and simply supported bridges
Published 2021“…Traffic load frequency (vibration frequency) values were decreased with increasing of bridge piers number because of the bridge structure had more stability. …”
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