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Vibration transmissibility
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The article numerically simulates the vibration reduction of a spur gear transmission by using damping particles placed in technological holes designed on the gear itself. The vibration of the gear transmission is reduced based on friction and inelastic collision which eliminates the vibrational energy by the loss during the motion of the damping particles within the technological holes.
8p
vijeff
30-11-2023
6
3
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Ebook "Polymer science: A comprehensive reference - Volume 2: Polymer characterization" addresses new characterization techniques, such as high resolution optical microscopy, scanning probe microscopy and other procedures for surface and interface characterization.
903p
loivantrinh
29-10-2023
10
3
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On the trade-off performance curve of vibration isolation controlled by passive or adaptive dampings
This paper addresses an on-off adaptive damping isolation, in which the damping can be frequency dependent. The comparison with the passive isolation is illustrated by the trade off performance curve, which is shown the relation between the displacement and force transmissibility
14p
viisac
15-09-2023
3
3
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In this paper, an isolator is introduced for isolating low frequency vibrations. Then, Normal form method is used to predict the curve of vibration transmissibility of this isolator. This paper is organized as follows. The mathematical model of system is presented in section.
6p
vidoctorstrange
06-05-2023
7
2
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This research has raised the question of whether the vibration transmission at a wall junction depends on how the wall is excited (by either a sound wave or a mechanical shaker). The aim of this research is to investigate this question and hence contribute to the revision of the series of standards. Villot and Guigou-Carter (2000) have considered this problem but their equations (10) and (13) appear to be in error. This research will endeavour to derive the correct equations and r epeat Villot and Guigou Carter’s calculations.
162p
runthenight05
01-03-2023
5
2
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Copper catalysts were simply fabricated through surface modification of superparamagnetic iron nanoparticles with indoline-2,3-dione(isatin)-Schiff-base and interaction with Cu from low-cost commercially available starting materials. Catalysts were characterized using atomic absorption spectrophotometry, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, vibrating sample magnetometry, UV/Vis spectroscopy, scanning electron microscopy, and transmission electron microscopy.
15p
langthannam
29-12-2021
7
0
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: Porous magnetite (Fe3 O4 ) and hematite (α-Fe2 O3 ) nanoparticles were prepared via the sol-gel auto-combustion method. The gels were prepared by reacting ferric nitrates (as oxidants) with starch (as fuel) at an elevated temperature of 200 °C. Different ratios (Φ) of ferric nitrates to starch were used for the synthesis (Φ = fuel/oxidant).
17p
langthannam
29-12-2021
8
0
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The present paper describes in situ green immobilization of silver nanoparticles on MnFe2O4@SiO2 nanospheres using Epilobium parviflorum (EP) without using any other toxic chemicals and reducing or stabilizing agents.
12p
langthannam
29-12-2021
11
0
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Minoxidil (2,4-diamino-6-piperidinopyrimidine 3-oxide) was primarily recognized as a drug for reducing vascular resistance to blood flow. It was later introduced as a more important medicine for topical stimulation of hair growth and baldness reverting as well as treatment of androgenic alopecia through increasing prostaglandin endoperoxide synthesis.
18p
tudichquannguyet
29-11-2021
16
1
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Lanthanum orthoferrite (LaFeO3 ) photocatalysts were synthesized by a facile and cost-effective coprecipitation method via the hydrolysis of La (III) and Fe (III). The characteristics of LaFeO3 were investigated through thermogravimetric analysis (TGA), X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), vibrating sample magnetometry (VSM), and transmission electron microscopy (TEM).
7p
kethamoi7
15-08-2020
16
2
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The tractor drawn ginger harvester cum elevator was developed with an objective to have mechanical means for harvesting of ginger crop. The components were designed and developed keeping in view the relevant crop, soil and machine parameters. The machine consisted of a main frame, digging blade, depth gauge wheel, vibration unit, power transmission system, and conveying mechanism. The performance evaluation of developed machine was evaluated at Chitta village of Bidar district of Karnataka State. The experiment was undertaken in red clay soil; the observed moisture content was 13.
8p
quenchua6
15-06-2020
18
2
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In this paper, a method for optimal design of structure parameters of gears in order to reduce the vibration of the car gearbox during the work process is presented. The model of a pair of interlocking gears was simplified by the two pairs of useful volume and elastic springs. From this model, it is established the formulas in order to determine elastic stiffness of gear, synthetic hardness a pair of interlocking gears, useful volume of gears, private frequency and the speed limit of the gear.
7p
quenchua5
17-05-2020
16
2
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Vibro-acoustic analysis of a finite orthotropic laminated double-composite plate with enclosed air cavity on an infinite acoustic rigid baffle is investigated analytically. Using the acoustic velocity potential to describe the acoustic vibration performance of a simple supported structure, the sound transmission loss (STL) is calculated from the ratio of incident to transmitted acoustic powers.
13p
chauchaungayxua2
07-01-2020
18
0
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In agriculture profession high output is demanded with limited resources and machines are the costlier investment to the agriculture for a marginal and poor farmer. The accuracy and precision of an agricultural machine can be increased using the electronics and computing systems however it increases the cost of the machines. In spite of costlier investments, many researchers have been conducted the study on mechatronics application in precise sowing operation in recent years.
15p
quenchua2
15-12-2019
10
1
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This study proposes therefore to apply the transmissibility functions for modal identification of ambient vibration testing and investigates its performance in presence of harmonics. Numerical examples and an experimental test are used for illustration and validation.
14p
elandorr
05-12-2019
22
0
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In this study, ZnO doped Mn2+ nanoparticle with hexagonal wurtzite phase was fabricated by a solvothermal method where various contents of Mn ion were in situ doped in ZnO nanostructure. The crystal structure and morphological properties were investigated by X-ray diffractometry, Raman spectroscopy and transmission electron microscopy.
8p
vitheseus2711
24-10-2019
10
2
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Magnetic measurements indicate a dependence of the squareness and the coercivity of the magnetization hysteresis loop on pH values with a maximum coercivity of 1425 Oe. The morphological properties of CoNiP nanowires were studied by transmission electron microscopy (TEM). The chemical composition was determined by examination of the energy dispersive X-ray (EDS) spectra and the magnetic properties were measured by vibrating sample magnetometry (VSM).
5p
thuyliebe
09-10-2018
23
0
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In this work, graphene oxide–manganese ferrite (GO–MnFe2O4) magnetic nanohybrids were synthesized by co–precipitation technique. The adsorption properties of GO–MnFe2O4 for efficient removal of Cd(II) from contaminated water were investigated. The nanohybrids were characterized by using X–ray diffraction, Fourier transform infrared spectroscopy, Brunauer– Emmett–Teller specific surface area (BET), transmission electron microscopy, and vibrating sample magnetometry (VSM).
13p
cumeo3000
01-08-2018
41
3
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(bq) part 1 book "the physics of vibrations and waves" has contents: simple harmonic motion, damped simple harmonic motion, the forced oscillator, transverse wave motion, coupled oscillations, longitudinal waves, waves on transmission lines,...and other contents.
260p
bautroibinhyen19
24-02-2017
46
3
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By stating that all isolators and equipment bases shall be of the same manufacturer and shall be supplied to the mechanical contractor, the consulting engineer has placed the responsibility on a single source who will be concerned with the vibration transmission from all mechanical equipment in the building, rather than only those which they supply.
15p
docvachiase
03-05-2013
49
4
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