A Mathematical Model of Infrared Heating of Auto Body Parts during Restoration by a Polymer Material

2020 ◽  
Vol 13 (2) ◽  
pp. 172-176
Author(s):  
R. I. Li ◽  
D. N. Psarev ◽  
A. N. Bykonya
Keyword(s):  
Mathematical Model ◽  
Polymer Material ◽  
Infrared Heating ◽  
Body Parts ◽  
Auto Body

scholarly journals Research on an Anthropomorphic Phantom for Evaluation of the Medical Device Electromagnetic Field Exposure SAR

2018 ◽  
Vol 8 (10) ◽  
pp. 1929 ◽  
Author(s):  
Shu Li ◽  
Zengwen Su ◽  
Hao Wang ◽  
Quan Wang ◽  
Haiping Ren
Keyword(s):  
Mathematical Model ◽  
Electromagnetic Radiation ◽  
Medical Device ◽  
Medical Devices ◽  
Debye Model ◽  
World Health ◽  
Endurance Capacity ◽  
Body Parts ◽  
Anthropomorphic Phantom ◽  
Field Exposure

A medical device will emit electromagnetic radiation to its surrounding environment either actively or passively. However, clinicians are unaware as to whether the ambient electromagnetic radiation will exceed the human body’s endurance capacity. In this paper, the mathematical model of electromagnetic parameters devoted to Specific Absorption Rate (SAR) testing of medical devices was established using a Debye Model. Body liquids featuring dielectric properties including the conductivity and permittivity of tissues at various body parts were simulated on the basis of results derived from the model. A simplified anthropomorphic phantom for the SAR test was founded on the basis of geometric parameters by following the principles of resemblance and consistent conductivity. A full-band electromagnetic mathematical model of brain, muscle, heart, lungs, stomach, and kidneys was set up. Electromagnetic radiation levels of a wearable Electrocardiograph monitoring device were measured and found that the maximum electric field intensity was up to 30 V/m, and the electromagnetic radiation SAR value was 0.96 W/kg, which were equivalent to the electromagnetic radiation exposure of the occupational group. The results established that electromagnetic radiation of certain medical devices exceeded the allowed values specified by the World Health Organization (WHO). Therefore, further studies within the field of medicine are required to decide whether additional evaluation measures should be required.

Research on Design Method of Radiation Field Used for Soft-Base Coat Infrared Drying

2011 ◽  
Vol 347-353 ◽  
pp. 3046-3049
Author(s):  
Xing Jia Liu
Keyword(s):  
Mathematical Model ◽  
Energy Saving ◽  
Radiation Field ◽  
Infrared Radiation ◽  
Design Method ◽  
Reference Value ◽  
Structure Design ◽  
Infrared Heating ◽  
Uniform Temperature ◽  
Infrared Drying

According to the characteristics and difficulties of the soft-base coat drying, the approach of solving the temperature sensitivity through the furnace type structure design as well as the mechanical and electrical chain design is put forward. The form of the infrared radiation field used for soft-base coat drying is determined. By analyzing the characteristics of the infrared heating element and its reflection equipment, a mathematical model of radiation is proposed, and by using of the results and programs obtained from the model, the scientific design method of infrared radiation field is presented. The problem of requirements for uniform temperature of the soft-base coat is solved by infrared radiation field design and movement of belt. By taking the energy saving reconstruction of an infrared blast furnace as an instance, the effectiveness of the proposed method is verified. The design method not only has guiding significance to the design of soft-base coat infrared drying, but also has reference value to other types of infrared heating design for energy saving .

Fixture layout optimisation based on a non-domination sorting social radiation algorithm for auto-body parts

2015 ◽  
Vol 53 (11) ◽  
pp. 3475-3490 ◽  
Author(s):  
Yanfeng Xing ◽  
Min Hu ◽  
He Zeng ◽  
Yansong Wang
Keyword(s):  
Body Parts ◽  
Fixture Layout ◽  
Auto Body

scholarly journals INVESTIGATION OF THE THREE-LINK CRAWLING ROBOTS MOVEMENT ON THE NONDETERMINATED SURFACE

2018 ◽  
Vol 22 (4) ◽  
pp. 6-14
Author(s):  
S. F. Jatsun ◽  
L. Yu. Vorochaeva ◽  
A. V. Malchikov ◽  
А. S. Yatsun
Keyword(s):  
Mathematical Model ◽  
Robot Motion ◽  
Rough Terrain ◽  
Body Parts ◽  
Closed Space ◽  
Straight Line ◽  
Full Scale Tests ◽  
Electronic Compass ◽  
Theoretical Results ◽  
Wheel Track

Bionic principles of locomotion are the most promising for displacement and transporting equipment under the most difficult conditions. Robots gait based on the changing shape of the robots body and interaction with the surface by body parts, can find application when moving over rough terrain, in a closed space of technological and natural cavities, where the use of wheel-track or walking principle is not possible. In this paper, we propose the design of a three-link crawling robot equipped with two-coordinate active joints. The robot is equipped by supporting elements. Some supporting elements has adjustable friction coefficients, which allows realize various types of movement algorithms of the device. The article presents a mathematical model of a three-link crawling robot, which allows to study the process of robot movement, including case when the coefficients of friction of the surface under the supports are not equal to each other. In practice, the surface will most often have an inhomogeneous nondeterministic structure, which will lead to a deviation in straight-line motion. The paper proposes an algorithm and a diagram of an automatic control system that allows robot to move along a given path despite the indeterminate surface. This is achieved by using additional sensors: a digital electronic compass, an accelerometer, a GPS module. The paper presents the results of computational experiments and the results obtained during the full-scale tests of the prototype of a three-link robot motion. At the end of the article, a comparative analysis of the experimental and theoretical results confirming the adequacy of the developed mathematical model and computational algorithms is presented.

A Mathematical Model of Thermal Irradiation Processing of Polymer Coatings during Restoration of Automobile Body Parts

2021 ◽  
Vol 14 (3) ◽  
pp. 376-380
Author(s):  
R. I. Li ◽  
D. N. Psarev ◽  
A. N. Bykonya ◽  
M. R. Kiba
Keyword(s):  
Mathematical Model ◽  
Polymer Coatings ◽  
Body Parts ◽  
Automobile Body ◽  
Thermal Irradiation

Optimum design of trimming line by one-step analysis for auto body parts

2007 ◽  
Vol 187-188 ◽  
pp. 108-112 ◽  
Author(s):  
Yi Dong Bao ◽  
Hoon Huh
Keyword(s):  
Optimum Design ◽  
Body Parts ◽  
One Step ◽  
Auto Body

Numerical Simulation and Experimental Method for Auto-Panel Forming Defects Analysis

2008 ◽  
Vol 575-578 ◽  
pp. 169-173
Author(s):  
Hui Yu Xiang ◽  
Chong Jie Leng ◽  
Yue Xian Zhong
Keyword(s):  
Numerical Method ◽  
Experimental Method ◽  
Strain Distribution ◽  
Grid Method ◽  
Practical Case ◽  
Body Parts ◽  
Forming Process ◽  
Auto Body ◽  
As Stress ◽  
Forming Defects

This paper investigated the forming defects causation and related resolving measures by combining numerical method with experimental technique. A practical case of one auto-body panel stamped parts with forming defects was studied in detail. A new approach determining the causation of forming defects and finding out resolving ways was proposed. Firstly, uses numerical method to analyze the characteristics of the whole forming process by dividing the forming process into virtual steps, so as to obtain the forming feature such as stress & strain distribution during the stamping process. Secondly, uses experimental grid method to measure the real plastic strain distribution of the defective area thus to analyze the forming rule of this area. By synthesizing both methods and carrying out extensive analysis, it is possible to make sure the cause of the defects and put out solving scheme further. The study shows that numerical combined with experimental method is an effective way in analyzing and resolving forming defects for auto-body parts.

Research on Multi-Process Route Decision-Making of Warm Forming for Projectile Bodies

2010 ◽  
Vol 97-101 ◽  
pp. 3703-3707
Author(s):  
Shao Jin Yan ◽  
Zhi Min Zhang
Keyword(s):  
Mathematical Model ◽  
Decision Making ◽  
Warm Forming ◽  
Search Process ◽  
Body Parts ◽  
Forming Process ◽  
Process Route ◽  
Feature Based ◽  
Sets Theory ◽  
Polychromatic Sets Theory

A method of using polychromatic sets theory to define the multi-process routes is proposed to solve the problem of process decision-making during the manufacturing process of warm forming for projectile bodies. First, the description of feature-based information model and modeling method of projectile body parts are studied and then a process mathematical model including a contour comprising matrix and a polychromatic graph is established on polychromatic sets theory, last a search process of warm forming process path is given and an application example is also given in the paper.

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