Results 31 to 40 of about 150,301 (303)

Research on Tooth Surface Design of Curved Tooth Face Gear based on Cylindrical Gear Addendum Modified [PDF]

open access: yes, 2021
Face gear is a new gear transmission form in which involute cylindrical gear and approximate bevel gear mesh with each other. The curved tooth face gear uses the involute arc tooth cylindrical gear as the face gear formed by the imaginary tool envelope ...
Guangjin Xiong   +5 more
core   +1 more source

In Vitro Attachment of Streptococci to the Tooth Surface [PDF]

open access: yesInfection and Immunity, 1974
The ability of Streptococcus strains to adhere to the tooth surface in vitro was investigated. Polished enamel slabs, with and without acquired pellicles, were incubated with buffer suspensions of oral streptococci, and attached bacteria were counted under a microscope using incident light.
D, Orstavik, F W, Kraus, L C, Henshaw
openaire   +2 more sources

Susceptibility of enamel to initial erosion in relation to tooth type, tooth surface and enamel depth [PDF]

open access: yes, 2015
This study aimed at assessing the susceptibility of different tooth types (molar/premolar), surfaces (buccal/lingual) and enamel depths (100, 200, 400 and 600 μm) to initial erosion measured by surface microhardness loss (ΔSMH) and calcium (Ca) release ...
Saads Carvalho, Thiago, Lussi, Adrian
core   +1 more source

Enamel surface roughness after orthodontic adhesive removal: an in vitro study comparing four clearance methods

open access: yesEuropean Oral Research
Purpose: Adhesive remnants removal is the last key step influencing orthodontic treatment outcomes. Four different clearance methods (CM) of orthodontic adhesive were evaluated to determine, which achieved the smoothest enamel surface in the shortest ...
Denisa Raticová   +6 more
doaj   +1 more source

Modeling and Meshing Analysis of 3-DOF Spherical Gear

open access: yesJixie chuandong, 2021
The 3-DOF spherical gear is proposed and its tooth surface is composed of involute ring tooth surface and semi-spherical bevel tooth surface, the error-free transmission can be realized.
Litong Zhang   +4 more
doaj  

Calculation method of tooth surface error. [PDF]

open access: yes, 2022
Calculation method of tooth surface error.
Yongquan Yu (5910521), Chao Lin (250299)
core   +1 more source

Effect of Time-varying Friction Factors on the Contact Fatigue Life of Gears

open access: yesJixie chuandong, 2023
The tooth surface friction has an important impact on the tooth surface contact stress and the tooth surface contact fatigue life. In the estimation of the contact fatigue life of the tooth surface, the influence of the friction force of the tooth ...
Li Xuefei   +5 more
doaj  

Finite element modelling and load share analysis for involute worm gears with localised tooth contact [PDF]

open access: yes, 2001
A new approach has been developed by the authors to estimate the load share of worm gear drives, and to calculate the instantaneous tooth meshing stiffness and loaded transmission errors. In the approach, the finite element (FE) modelling is based on the
Gentle, CR, Su, D, Yang, F
core  

Tooth surface measurement of each gear. [PDF]

open access: yes, 2022
Tooth surface measurement of each gear.
Yongquan Yu (5910521), Chao Lin (250299)
core   +1 more source

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

open access: yesAdvanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann   +2 more
wiley   +1 more source

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