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  • Three-dimensional simulation of unsteady flows in a

    Three-dimensional simulation of unsteady flows in a pump-turbine during start-up transient up to speed no-load condition in generating mode

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  • Three-dimensional simulation of unsteady flows in a

    2016-5-12 · Three-dimensional simulation of unsteady flows in a pump-turbine during start-up transient up to speed no-load condition in generating mode Zhongjie Li, Huili Bi, Zhengwei Wang, and Ze Yao Proceedings of the Institution of Mechanical Engineers, Part A: Journal of …

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  • AIR TURBINES - Gunz

    2020-6-26 · With up to an incredible 26 watts* of output, our air turbines will revolutionize your dental practice. *With the Z900L Three-Dimensional Rotor Capacity optimized to capture more air and delivery up to 26 watts for power Drive Air Pipe Single nozzle delivers high-pressure air to optimize blade rotations Ti-Max Z Cartridge Ti-Max X Cartridge

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  • Scaling Three-Dimensional Low-Pressure Turbine

    2016-5-10 · A cold-flow, large-scale, low-speed (LS) rig was built in order to investigate and validate new design criteria, providing reliable and detailed results while containing costs. This paper presents the design of an LS stage and describes a general procedure that allows to scale three-dimensional (3D) blades for LS testing.

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  • Three-dimensional simulation of thermal field for a

    2013-11-13 · Three-dimensional simulation of thermal field for a high-speed turbine generator. V. N. Antipov, I. Yu. Kruchinina & A. D. Grozov Russian Electrical Engineering volume 84, pages 487–491 (2013)Cite this article

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  • Testing and Correlating Speed, Torque, Airflow, and

    An air turbine handpiece is a dental abrasive device that rotates at high speed and uses compressed air as the driving force. It is characterized by its small size, light weight, and painless ...

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  • Three dimensional simulation of J-shaped Darrieus

    2016-12-1 · Three dimensional simulation of J-shaped Darrieus vertical axis wind turbine. ... this combined forces help the turbine possess faster operation at low wind speeds, thereby resulting in the termination of self-starting problem and improving power coefficients, especially at low and moderate tip speed ratios. ... the amplitude of power and ...

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  • Dental Drill - an overview | ScienceDirect Topics

    Dental burs come in many shapes and sizes designed for specific applications and can rotate at speeds of up to 500,000 revolutions per minute (rpm). They can be made of steel and then coated with a hard coating, such as tungsten carbide coating, or they can be entirely tungsten carbide [8,10–13] .

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  • (PDF) CREATING A 3D MODEL OF DENTAL SPLINT

    Increase in propulsion propeller speed resulted with an increase in analyzed turbine developed power from 3964 kW at 41.78 rpm to 24805 kW at 83.00 rpm.

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  • Dental Burs Market Global Share Trend Analysis and ...

    2021-5-24 · Friction grip shank fit into the turbine of a high-speed handpiece. Dental Burs Market by Material . Dental burs are made up of using various materials such as stainless steel, tungsten carbide etc. Tungsten carbide is about three times stiffer than steel and are enormously hard.

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  • 3D printed Vertical Axis Wind Turbine (VAWT) model

    three-speed sonic motor switch provides options of 10,000, 6,000 and 2,000 cycles per minute (cpm). When the handpiece is activated, the power defaults to 10,000cpm, which research has shown to be the recommended speed to maximize debridement and disruption of the smear layer and biofilm (Caron, 2007; Gulabivala, 2006) [8].

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  • Emerging trends in endodontic irrigation - Dental Journal

    The '3D Accuitomo' debuts in Japan, a limited cone-beam CT device for dental and cervical regions and a dream come true for three dimensional dental imaging. Sales of a new, exclusively digital, 'Veraviewepocs' model with high speed, (6 seconds) cephalometric capability begin.

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  • History | MORITA

    2021-6-10 · The all-rounder Sega system, for instance, houses a 120 x 68 mm build volume, and is capable of 3D printing at speeds of 90 mm/hour and at a precision of 50 microns, while the Vega is …

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  • Dentafab's PowerResins cleared for 3D printing

    2021-3-26 · New Three-Dimensional Rotor 3차원 커브형상의 로터에 의해 26W의 파워를 실현했습니다. 20 AIR TURBINES 21 A I R T U R B I N E S 012-023-hi_speed-k_1504.indd 20-21 15.4.21 2:21:47 PM

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  • NSK-Nakanishi Korea - AIR TURBINES

    2015-12-30 · STEREOLITHOGRAHIC ADDITIVE MANUFACTURING OF CERAMICS GMEINER Robert1,2, PFAFFINGER Markus1,2 and STAMPFL Jürgen1,2 1Institute of Materials Science and Technology, TU Wien Getreidemarkt 9, E308, 1060 Wien, Austria 2 Christian Doppler Laboratory for digital and restorative dentistry In contrast to various conventional manufacturing technologies like …

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  • High-precision 3D metrology | fast, precise

    The high-speed turbine dental handpiece adapted for single safe use comprises a nose, a handle connected to the rear end of the nose, a plug connector disposed at the rear end of the handle, and a clip ring for fixing the handle and the plug connector, wherein the plug connector is provided with a first fixing slot at a side wall, the tail end of the handle is provided with a second fixing ...

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  • Three-dimensional simulation of unsteady flows in a

    2016-9-1 · Three-dimensional simulation of unsteady flows in a pump-turbine during start-up transient up to speed no-load condition in generating mode. Zhongjie Li, Huili Bi, Zhengwei Wang, Ze Yao Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy ...

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  • AMT - Three-dimensional structure of wind turbine

    Three-dimensional structure of wind turbine wakes as measured by scanning lidar. Abstract. The lower wind speeds and increased turbulence that are characteristic of turbine wakes have considerable consequences on large wind farms: turbines located downwind generate less power and experience increased turbulent loads.

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  • Three Dimensional Design of a High Speed Radial

    2015-3-18 · This paper is concerned with the design of a high speed, 5 inch diameter radial-inflow turbine for medium-sized diesel engine turbocharger applications. The turbine was designed by a newly developed fully three dimensional compressible inverse design method, in which the blade shapes are computed for a specified distribution of r V ¯ θ ⁠ .

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  • NSK Ti-Max Z Dental Turbine Handpieces with Light ...

    Designing high-speed dental air-turbine handpiece by using a computational approach October 2017 International Journal of Precision Engineering and Manufacturing 18(10):1403-1407

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  • Designing high-speed dental air-turbine handpiece by

    2021-3-13 · The brief was to design a 50kW wind turbine for an eco-village in the KZN coastal region north of Durban with a rated wind speed of 13.5m/sec and where wind speeds vary from 3.5 m/sec to 18 m/sec. Of particular interest was the axis orientation (horizontal or vertical), the number size and shape of blades, and turbine height.

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  • WIND TURBINE DESIGN - Wits

    2017-9-1 · Usually, high speed air-turbine dental handpieces operate at 200,000 to 400,000 revolutions per minute [5]. The main part of the dental air turbine is its high speed rotor head consisting of a casing with air inlet and outlet nozzles, impeller, spindle, chuck …

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  • A Numerical Study on Performance of Dental Air

    2015-6-25 · For three-bladed wind turbine, the rotor aerodynamic torque exists 3P (3 is the number of blades, P is the rotor rotation angular frequency) ripple component caused by the wind shear and tower shadow. Thus, this model can more accurately reflect the wind load conditions of the wind turbine. The equivalent wind speed analytical equations

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  • Energies 2015 OPEN ACCESS energies

    2015-12-30 · STEREOLITHOGRAHIC ADDITIVE MANUFACTURING OF CERAMICS GMEINER Robert1,2, PFAFFINGER Markus1,2 and STAMPFL Jürgen1,2 1Institute of Materials Science and Technology, TU Wien Getreidemarkt 9, E308, 1060 Wien, Austria 2 Christian Doppler Laboratory for digital and restorative dentistry In contrast to various conventional manufacturing technologies like …

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  • STEREOLITHOGRAHIC ADDITIVE MANUFACTURING OF

    Dental Product, Dental Handpiece, High Speed Dental Handpiece manufacturer supplier in China, offering Push Button Type Low Speed Contra Angle (New type), Straight Contra Angle Air Motor Dental Low Speed Handpiece, Dental Handpiece Kits with Ceramic Bearing Cartridge and so on.

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  • Three Spray High Speed Air Turbine Handpiece

    High quality Three Spray High Speed Air Turbine Handpiece Without Light from China, China's leading Dental Turbine Handpiece product, with strict quality control Air Turbine Handpiece factories, producing high quality High Speed Air Turbine Handpiece products.

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  • Takumi Sato - Three-dimensional measurement of

    In order to construct the skill acquisition method for a common treatment of dental caries, it is necessary to prepare quantitative guidelines for Dental students.

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  • In this study, measurement and analysis for the movements of fingers and turbine have been conducted during tooth removal and restoration process using three-dimensional motion capture.

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  • Effects of Tip Endwall Contouring on the Three

    Tip endwall contouring is one of the most effective methods to improve the performance of low aspect ratio turbine vanes [1]. In view of the wide variety of geometric parameters, it appears that only the physical understanding of the three-dimensional flow field will allow us to evaluate the probable benefits of a particular endwall contouring.

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  • A compressible three‐dimensional design method for

    1991-9-5 · A fully three-dimensional compressible inverse design method for the design of radial and mixed flow turbomachines is described. In this method the distribution of the circumferentially averaged swirl velocity r V θ on the meridional geometry of the impeller is prescribed and the corresponding blade shape is computed iteratively. Two approaches are presented for solving the compressible flow ...

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  • Numerical investigation of the average wind speed of

    Firstly, the average wind speed of a single wind turbine is studied based on the single wake model. For a single wind turbine, assuming the incoming wind is distributed as power law in the vertical direction, the average wind speeds have a close relationship to the power exponent α, …

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  • Increased precision and speed in dimensional checks

    The high-speed turbine dental handpiece adapted for single safe use comprises a nose, a handle connected to the rear end of the nose, a plug connector disposed at the rear end of the handle, and a clip ring for fixing the handle and the plug connector, wherein the plug connector is provided with a first fixing slot at a side wall, the tail end of the handle is provided with a second fixing ...

    Get Price
  • High-precision 3D metrology | fast, precise

    2020-6-1 · Methods. We analyzed variation in three-dimensional (3D) facial images of 7057 subjects: 3327 with 396 different syndromes, 727 of their relatives, and 3003 unrelated, unaffected subjects. We ...

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  • US Patent for High-speed turbine dental handpiece

    Makhsuda Juraeva's 22 research works with 137 citations and 1,184 reads, including: Mixing Performance of a Cross-Channel Split-and-Recombine Micro-Mixer Combined with Mixing Cell

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  • AMT - Three-dimensional structure of wind turbine

    Three-dimensional structure of wind turbine wakes as measured by scanning lidar. Abstract. The lower wind speeds and increased turbulence that are characteristic of turbine wakes have considerable consequences on large wind farms: turbines located downwind generate less power and experience increased turbulent loads.

    Get Price
  • Three Dimensional Design of a High Speed Radial

    2015-3-18 · This paper is concerned with the design of a high speed, 5 inch diameter radial-inflow turbine for medium-sized diesel engine turbocharger applications. The turbine was designed by a newly developed fully three dimensional compressible inverse design method, in which the blade shapes are computed for a specified distribution of r V ¯ θ ⁠ .

    Get Price
  • Dynamic analysis of three-dimensional drivetrain

    Firstly, the average wind speed of a single wind turbine is studied based on the single wake model. For a single wind turbine, assuming the incoming wind is distributed as power law in the vertical direction, the average wind speeds have a close relationship to the power exponent α, …

    Get Price
  • Numerical investigation of the average wind speed of

    By means of a vertical positioning device, the modelling platform base rises up for a measure corresponding to the thickness of the solidified layer till the completion of the job. These motion capabilities, together with a synchronised laser, allow the creation of exceptionally complex and precise three-dimensional prototypes.

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  • Increased precision and speed in dimensional checks

    2016-2-10 · The choice of the tip speed ratio for a particular wind turbine design depends on several factors. In general a high tip speed ratio is a desirable feature since it results in a high shaft rotational speed that is needed for the efficient operation of an electrical generator. A high tip speed ratio however entails several possible disadvantages: 1.

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  • 3D PRINTER FOR DENTAL & CLINIC - Pelusi

    2017-2-22 · power laser to form a solid, three-dimensional object (Figure 3 & 4) [1]. 1994 was a good year for additive manufacturing since many AM systems were developed simultaneously. Modelmaker from Solidscape was introduced as well as some new systems developed in Japan and Europe. The German Company EOS developed and

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  • OPTIMAL ROTOR TIP SPEED RATIO

    N S K Pana Max Low Price E-generator Led 3 Water Spray Dental High Speed Handpiece/air Turbine/dental Lab Instruments , Find Complete Details about N S K Pana Max Low Price E-generator Led 3 Water Spray Dental High Speed Handpiece/air Turbine/dental Lab Instruments,Pana Max Handpiece,High Speed Handpiece,Cheap Dental Instruments from Other Dental Equipments Supplier …

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