scholarly journals ROBOTIC PLASMA SPRAYING SYSTEM FOR IMPLANTS OF COMPLEX STRUCTURE: 3D MODEL AND MOTION PLANNING

2020 ◽  
pp. 224-232
Author(s):  
Indira Karymsakova ◽  
Natalya Denissova ◽  
Saule Kumargazhanova ◽  
Iurii Krak
Keyword(s):  
Plasma Spraying ◽  
3D Model ◽  
Complex Structure ◽  
Robot Motion ◽  
Joint Implant ◽  
Parametric Classification ◽  
Robotic Devices ◽  
Manipulation Robot ◽  
Biocompatible Coatings

The problem of a robotic system creating for plasma spraying of biocompatible coatings on complex shaped implants based on a Fanuc LR Mate 200 id manipulation robot and modeling spraying trajectories using a virtual simulator Roboguide V6.40 is considered. Parametric classification of implants is carried out whenever possible by plasma spraying using robotic devices. The main procedures for implants preparation for spraying were investigated. The 3D UNIVERSE scanner is used for scanning the implant and building its spatial model, the 3D model of the implant is being developed in Geomagic Design X. To build the manipulator program movements taking into account the speed of movement, it is proposed to use fourth order splines, which is built in the Matlab tools with finding of the optimal close spline to the original values. As the example of Cox femoral joint implant, a simulation of robot motion is performed using a virtual simulator Roboguide V6.40 with the possibility of transferring the program to a real Fanuc LR Mate 200 id robot.

Development of a robotic plasma spraying system for biocompatible coatings

2019 ◽  
Vol 24 (1-2) ◽  
pp. 87-93
Author(s):  
Karymsakova I.B. ◽  
◽  
Denissova N.F. ◽  
Krak U.V. ◽  
◽  
...  
Keyword(s):  
Plasma Spraying ◽  
Plasma Deposition ◽  
Physical Design ◽  
Sql Server ◽  
Hardware Complex ◽  
Ceramic Surfaces ◽  
Software And Hardware ◽  
Data Design ◽  
Biocompatible Coatings

The results of the development of the database of implants and plasma deposition plants in MS SQL Server 2012 are presented. The design of the infological model, the data design, the physical design, the architecture of the software and hardware complex are given. Possibilities of plasma spraying of implants with biocompatible elements are investigated. The system of classification of implants according to the type of application and manufacturing materials has been developed, implants have been classified according to the geometric-topological dimensions of the components. A scheme of plasma spraying of metal and ceramic surfaces of parts and assemblies using a robotic complex is described.

Classification of reconfigurable modular robotic systems

2020 ◽  
Vol 20 (3) ◽  
pp. 30-37
Author(s):  
N.A. Pavliuk ◽  
Keyword(s):  
Robotic Systems ◽  
Analytical Review ◽  
Key Features ◽  
Robotic Devices

In this paper analytical review and classification of existing modular robotic systems are presented, based on the key features of the devices and their configurations. The principal issues concerning modular robotic devices, systems and connection devices are described.

“Holding On” to the Theology-Psychology Relationship: The Underlying Fiduciary Structures of Interdisciplinary Method

1997 ◽  
Vol 25 (3) ◽  
pp. 329-340 ◽  
Author(s):  
F. Leron Shults
Keyword(s):  
Case Studies ◽  
Hidden Curriculum ◽  
Complex Structure ◽  
Object Theory ◽  
Developmental Framework ◽  
Relational Concepts ◽  
The Individual ◽  
Opening Up ◽  
The Way

This article explores the personal dimension of interdisciplinary method. How do we as individuals hold on to the content of our disciplines and the relation between them? Many recent attempts at relating psychology and theology have missed the “hidden curriculum” of the interdisciplinary “assignment.” The ability to hold on to the psychology-theology relationship (in a way that does not capitulate to a deconstructivist relativism or regress to a foundationalist absolutism) depends on a sufficiently complex structure of consciousness within the individual that is capable of upholding inherently relational concepts. Based on the developmental framework of Robert Kegan's “subject-object” theory (1994), the model proposed here offers a classification of three underlying fiduciary structures, (“traditionalist,” “modernist,” and “post-modernist”) and explores the way they shape interdisciplinary method through several case studies. As Christians, we affirm that relationality itself is ultimately revealed and transformed by the Spirit of Christ, opening up to us new insights into our relational existence.

Process Optimization of 3D Optical Fiber Laser Cutting Robot for Press Hardening of UHSS

2013 ◽  
Vol 753-755 ◽  
pp. 2033-2036 ◽  
Author(s):  
Hui Qiang Liu ◽  
Yi Sheng Zhang ◽  
Pei Xing Liu
Keyword(s):  
Laser Cutting ◽  
3D Model ◽  
Complex Structure ◽  
High Strength ◽  
High Energy ◽  
Entry Point ◽  
Press Hardening ◽  
Energy Beam ◽  
Cutting Head ◽  
Offline Programming

The hot forming parts of high strength steel are difficult to cut with the presses and the traditional high-energy beam due to its high tensile strength which can be up to 1500Mpa and its complex structure. And the 3D laser cutting is an effective way to solve the problem. However some problems in the laser process affect the efficiency and quality seriously, including interference between the robot arms and the cutting head with the untrimmed parts, difficulty in determining the entry point and over burning etc. In this research three measures are taken to cut the anti-collision beam, including using photogrammetric technology to get its uncutted 3D model for offline programming to avoid interference, selecting appropriate entry point to trim without interrupt, amending normals and adjusting the process parameters at corners to prevent over burning. The results show that the efficiency and quality are improved and a creative new offline programming method is put forward.

The place of 'genesis' in the classification of soils

Soil Research ◽  
1984 ◽  
Vol 22 (1) ◽  
pp. 1 ◽  
Author(s):  
GG Beckmann
Keyword(s):  
Complex Structure ◽  
Soil Layer ◽  
Central Concept ◽  
Vertical Column ◽  
Individual Organism ◽  
Physical Chemical ◽  
Natural Objects ◽  
The Individual ◽  
Hand Specimen

The purpose of classification is to indicate relationships and differences between objects and to establish groups at various levels of generalization; i.e. to produce simplified models based on experience. In soils the object to be classified is often the soil profile, which may be considered to be analogous to the hand specimen in geology and to the individual organism in biology. For purposes of discussion a profile is considered to be a vertical column, up to 20 cm square, and extending to c. 2 m from the surface, to rock or to some distinct soil layer underlying the profile, across which physical, chemical and mineralogical variations are small. There is no conceptual continuum of soil profiles, even though there is a physical continuum across the surface of the earth. Rather there are a number of common forms each of which may be represented by a 'central concept' with intergrades between them. Such a central concept can be recognized at each level of a hierarchy. Soils are natural objects with a complex structure and history, as are organisms, rock specimens and even landforms. They should be considered in the same way as the other natural objects when a classification is being constructed. Their 'history', as conceived at present, should be involved in classification, even though major emphasis is placed on physical, chemical and mineralogical properties. To illustrate these ideas, the Australian Great Soil Groups are re-examined and suggestions are made about possible subgroups.

On constructions of Lie (super) algebras and (𝜀,δ)-Freudenthal–Kantor triple systems defined by bilinear forms

2019 ◽  
Vol 19 (11) ◽  
pp. 2050223
Author(s):  
Noriaki Kamiya ◽  
Daniel Mondoc
Keyword(s):  
Lie Algebras ◽  
Complex Structure ◽  
Bilinear Forms ◽  
Simple Lie Algebras ◽  
Triple Systems ◽  
Dynkin Diagrams

In this work, we discuss a classification of [Formula: see text]-Freudenthal–Kantor triple systems defined by bilinear forms and give all examples of such triple systems. From these results, we may see a construction of some simple Lie algebras or superalgebras associated with their Freudenthal–Kantor triple systems. We also show that we can associate a complex structure into these ([Formula: see text]-Freudenthal–Kantor triple systems. Further, we introduce the concept of Dynkin diagrams associated to such [Formula: see text]-Freudenthal–Kantor triple systems and the corresponding Lie (super) algebra construction.

ON THE CLASSIFICATION OF EVEN UNIMODULAR LATTICES WITH A COMPLEX STRUCTURE

2012 ◽  
Vol 08 (04) ◽  
pp. 983-992 ◽  
Author(s):  
MICHAEL HENTSCHEL ◽  
ALOYS KRIEG ◽  
GABRIELE NEBE
Keyword(s):  
Modular Group ◽  
Complex Structure ◽  
Theta Series ◽  
Number Fields ◽  
Quadratic Number ◽  
Imaginary Quadratic Fields ◽  
Rings Of Integers ◽  
Hermitian Modular Form ◽  
Imaginary Quadratic Number

This paper classifies the even unimodular lattices that have a structure as a Hermitian [Formula: see text]-lattice of rank r ≤ 12 for rings of integers in imaginary quadratic number fields K of class number 1. The Hermitian theta series of such a lattice is a Hermitian modular form of weight r for the full modular group, therefore we call them theta lattices. For arbitrary imaginary quadratic fields we derive a mass formula for the principal genus of theta lattices which is applied to show completeness of the classifications.

scholarly journals Blowhole Detection Based on Bidirectional Enhancement and Omnidirectional Analysis for X-Ray Inspection of Castings

2019 ◽  
Vol 2019 ◽  
pp. 1-16
Author(s):  
Xinyue Zhao ◽  
Jingjing Liang ◽  
Zaixing He ◽  
Shuyou Zhang
Keyword(s):  
3D Model ◽  
Detection Method ◽  
Complex Structure ◽  
Model Fitting ◽  
Extraction Process ◽  
Experimental Results ◽  
Defect Region ◽  
Defect Identification ◽  
X Ray ◽  
Identification Process

Small blurred blowholes are difficult to detect, especially those in castings having a complex structure. In this paper, we propose a blowhole detection method based on bidirectional enhancement and omnidirectional analysis for X-ray inspection of castings. After obtaining the X-ray images of a casting from the X-ray inspection equipment, there are two main processes to detect the blowholes. First, in the extraction process for the potential defect region, we propose a method based on bidirectional enhancement that highlights the blurred defects and models the nondefective structure. Second, in the precise defect identification process, we propose a method to distinguish real defects by 3D model fitting-based omnidirectional analysis. The experimental results indicate that the proposed method has a higher performance in blowhole detection than comparable methods.

Semi-parametric classification of noisy curves

2003 ◽  
Vol 36 (1) ◽  
pp. 35-44 ◽  
Author(s):  
R.H. Glendinning ◽  
A.J. Goode
Keyword(s):  
Parametric Classification
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