scholarly journals Study on Rough Surfaces: A Novel Method for High-Precision Simulation and Interface Contact Performances Analysis

2021 ◽  
Author(s):  
Xiaokai Mu ◽  
Wei Sun ◽  
Chong Liu ◽  
Yunlong Wang ◽  
Bo Yuan ◽  
...  
Keyword(s):  
High Precision ◽  
Rough Surfaces ◽  
Interface Contact ◽  
Novel Method

scholarly journals A novel method for high precision aortic constriction that allows for generation of specific cardiac phenotypes in mice

2018 ◽  
Vol 114 (12) ◽  
pp. 1680-1690 ◽  
Author(s):  
Arne O Melleby ◽  
Andreas Romaine ◽  
Jan Magnus Aronsen ◽  
Ioanni Veras ◽  
Lili Zhang ◽  
...  
Keyword(s):  
High Precision ◽  
Aortic Constriction ◽  
Novel Method

A Novel Method of Obtaining Honing Tool Profile for Machining Gears With Profile Modifications

2020 ◽  
Vol 142 (9) ◽  
Author(s):  
Michał Batsch
Keyword(s):  
Mathematical Model ◽  
Design Process ◽  
High Precision ◽  
Prediction Error ◽  
Industrial Applications ◽  
Helical Gears ◽  
Profile Deviation ◽  
Tool Profile ◽  
Novel Method ◽  
Two Parameter

Abstract In this study, a mathematical model of the honing process for helical gears with external teeth was developed. The proposed novel method of obtaining the two-parameter envelope of a family of surfaces proved useful in simulated machining by means of a tool with a profile deviation. Based on performed simulations and industrial applications, it was found that this method can be useful in predicting the accuracy of machined gear and therefore can be used in the design process of honing tool for high precision aerospace gears. For the example provided, the average absolute prediction error of machined tooth profile was 0.28 µm.

A Novel Lapping Method for High Precision Balls Based on Variable-Radius V-Groove

2013 ◽  
Vol 1 (4) ◽  
Author(s):  
Ping Zhao ◽  
Weigang Guo ◽  
Ming Feng ◽  
Binghai Lv ◽  
Qianfa Deng ◽  
...  
Keyword(s):  
High Precision ◽  
High Efficiency ◽  
Ball Bearing ◽  
Lower Plate ◽  
The Novel ◽  
Variable Radius ◽  
Novel Method ◽  
Set Up ◽  
High Consistency ◽  
Steel Balls

The precision ball is the most key component of ball bearing, which is widely used in many precision mechanical fields. This paper presents a variable-radius V-groove lapping method since this method can make the spin angle vary between 0 deg and 90 deg, and the lapping trajectory can cover the ball's surface. Based on this lapping method, an observation of lapping surface of balls experiment is set up in which blackened balls is brightened effectively only after 10 circulations of lower plate in 2 min. Next, another experiment is also done: A batch of G16 level steel balls has been lapped to G5 level in the machining experiment. All results illustrate that the novel method has properties of high efficiency, high precision, and high consistency, which needs further study and then it is likely to replace the traditional one in the future.

Paper 2: Holographic Techniques in Engineering Metrology

1968 ◽  
Vol 183 (4) ◽  
pp. 5-12
Author(s):  
A. E. Ennos
Keyword(s):  
High Precision ◽  
Unique Feature ◽  
Three Dimensional ◽  
Laser Source ◽  
Coherent Light ◽  
Holographic Image ◽  
Dimensional Image ◽  
Engineering Component ◽  
Novel Method

Holography is a novel method of photography using coherent light from a laser source. Its unique feature is that it records a faithful three-dimensional image of the object. This allows one to compare the shape of an engineering component at one moment in time with its shape after some change has taken place, e.g. by deforming it under load. In some cases the holographic image of a ‘master’ component can be used as a template against which similar components can be matched with high precision. The techniques of holography, the interpretation of the results obtained, and the present limitations of the method will be discussed.

A Novel Method of Diameter Measurement by Laser Scanning Based on Flat-Crystal

2011 ◽  
Vol 467-469 ◽  
pp. 1604-1609 ◽  
Author(s):  
Yi Wang ◽  
Yong Jie Ren ◽  
Chang Jie Liu ◽  
S.H. Ye
Keyword(s):  
Measurement Error ◽  
Theoretical Analysis ◽  
High Precision ◽  
Laser Scanning ◽  
Propagation Direction ◽  
Diameter Measurement ◽  
Measurement Device ◽  
The Core ◽  
Scanning Beam ◽  
Novel Method

A novel diameter measurement device by laser scanning of which a flat-crystal was used as the core scanning part was designed. The device can generate high parallel scanning beam by means of the property that a beam won’t change its propagation direction after transmitting a flat-crystal. The influences on measurement error and range by using flat-crystal were analyzed in details. Theoretical analysis showed that the method was easy to realize and achieve high precision.

scholarly journals Exact Solution for Relativistic Trajectories Using Modal Transseries

Symmetry ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1505
Author(s):  
Luis Acedo ◽  
Abraham J. Arenas ◽  
Nicolas De La Espriella
Keyword(s):  
Exact Solution ◽  
Angular Momentum ◽  
High Precision ◽  
Limit Cycles ◽  
Fundamental Problem ◽  
Orbital Plane ◽  
Relativistic Effects ◽  
Geodesic Equation ◽  
Novel Method ◽  
Analytical Expressions

In this article, we design a novel method for finding the exact solution of the geodesic equation in Schwarzschild spacetime, which represents the trajectories of the particles. This is a fundamental problem in astrophysics and astrodynamics if we want to incorporate relativistic effects in high precision calculations. Here, we show that exact analytical expressions can be given, in terms of modal transseries for the spiral orbits as they approach the limit cycles given by the two circular orbits that appear for each angular momentum value. The solution is expressed in terms of transseries generated by transmonomials of the form e−nθ, n=1, 2, …, where θ is the angle measured in the orbital plane. Examples are presented that verify the effect of the solutions.

STRANGE HADRONS BRIDGE BETWEEN QUARKS AND STARS

2007 ◽  
Vol 16 (03) ◽  
pp. 925-936
Author(s):  
JOSEF POCHODZALLA
Keyword(s):  
Pair Production ◽  
High Precision ◽  
Heavy Ion ◽  
Ion Beams ◽  
Nuclear Collision ◽  
Rare Isotope ◽  
Panda Experiment ◽  
Novel Method ◽  
Hypernuclear Physics ◽  
First Time

Future experimental opportunities for the hypernuclear physics at GSI/FAIR are presented. The HYPHI experiment will investigate exotic hypernuclei which are produced by nuclear collision with stable heavy ion beams and rare isotope beams (RI-beams) at GSI. Thanks to the use of [Formula: see text] beams and the skilful combination of experimental techniques, copious production of double Λ hypernuclei is expected at the PANDA experiment which will enable high precision γ spectroscopy for the first time. Finally a novel method to explore the interaction of antibaryons in nuclei by baryon-antibaryon pair production in antiproton nucleus interactions is outlined.

scholarly journals A Novel and High-Precision Method for Calculating the γ-Ray Build-Up Factor for Multilayer Shields

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Chao Li ◽  
Yingming Song ◽  
Zehuan Zhang ◽  
Jie Mao ◽  
Weiwei Yuan ◽  
...  
Keyword(s):  
Radiation Field ◽  
High Precision ◽  
Single Layer ◽  
Field Calculation ◽  
The Novel ◽  
Precision Method ◽  
Practical Tool ◽  
Novel Method ◽  
Kernel Integration ◽  
Single Material

In the field of radiation protection, the point-kernel code method is a practical tool widely used in the calculation of 3-D radiation field, and the accuracy of the point-kernel integration method strongly depends on the accuracy of the build-up factor. It is well known that calculation of the build-up factor for single-layer shields is composed of single material, but it is very complicated to calculate the build-up factor for multilayer shields (MLBUF). Recently, a novel and high-precision method based on the deep neural network (DNN) for calculating MLBUF has been proposed. In this paper, the novel method is described completely by slab models. Through the study of photon transport in multilayer shields, the parameters that mainly affect the calculation of build-up factor are analyzed. These parameters are trained by DNN as the input vectors, and the build-up factor for multilayer shields is predicted based on the trained DNN. The results predicted by DNN confirm that the method can calculate the build-up factor for multilayer shields quickly and accurately. The method has been preliminarily applicated into a 3-D radiation field calculation software, and it has proved that the method for calculating MLBUF has a broad application prospects in 3-D radiation field calculation.

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