Results 71 to 80 of about 1,418,338 (247)
Jixie chuandong, 2007 Experiment reseach about involute gear’s tooth form factor and stress correction factor by applying 30o tangent method is carried out. Tooth profile generating experiment to teeth number is carried out, measury tooth root chord at the critical section ...
孙伏, 张杰, 陈应舒
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Erbil Dental Journal, 2023 Background and objective: With FPMs between the ages of 6 and 12, the detection of open apex in some children at age 12 underlines the necessity for investigation prior to treating a deep carious lesion.Pulpal involvement was considered before the ...
Yara Ismail Ameen +2 more
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A cone-beam computed tomography study of orthodontic apical root resorption
Journal of Dental Sciences, 2013 Background/purpose: Root resorption is an important problem in orthodontic treatment. Basically, the root resorption is evaluated by using two-dimensional images (e.g., periapical films, panoramic films, and cephalometric films). However, the use of such
Jian-Hong Yu +5 more
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Journal of Dentistry Indonesia, 2013 Three-dimensional Computed Tomography (CT) is used to analyze the topography of the root canal anatomy in order to make a decision in choosing root canal preparation method.
Alexey V. Silin, Irina V. Pyatkova
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XXXVII.—On a reptilian tooth with two roots [PDF]
Annals and Magazine of Natural History, 1893 n ...
openaire +2 more sources
Several Questions about Gear Single Tooth Pulsating Bending Fatigue Test
Jixie chuandong, 2017 The methods of the tooth root bending fatigue test both at home and abroad are introduced,and several questions about single tooth pulsating test are explained and discussed,such as ensure the load distribution along tooth length direction,clamped tooth ...
Liu Ziqiang, Chen Liang, Wan Wenming
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Modification of Differential Gear based on Multi-objective Optimization
Jixie chuandong, 2020 In order to reduce vibration and noise， the modification of the tooth profile of the planetary gear and the eccentric helix are studied. The influence of tooth profile modification，helix modification， helix modification factorⅠand helix modification ...
Qiqi Feng +5 more
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Bending strength simulation of asymmetric involute tooth gears
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2015 Aiming at high load capacity, the design of the tooth profile which is not caught by the conventional profile is performed. Root stresses are calculated by 2D-FEM for various profile gears: 1) completely bilateral symmetry, 2) symmetry pressure angle and
Tomoya MASUYAMA +2 more
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Jixie chuandong, 2019 With the continuous development of engineering technology, bending fatiguestrength has become an important limiting factor for the further development of gears, and bending fatigue failure is more dangerous than tooth surface failure.
Wang Zhen +4 more
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