Experimental Determination of Mechanical Properties of Waste Steel Sheets

2020 ◽  
Vol 994 ◽  
pp. 62-69
Author(s):  
Viliam Čačko ◽  
Iveta Onderová ◽  
Ľubomír Šooš ◽  
Pavol Varga ◽  
Andrej Smelík
Keyword(s):  
Ultimate Strength ◽  
Steel Sheet ◽  
Metal Cutting ◽  
Calculated Data ◽  
Strength Parameter ◽  
Experimental Procedure ◽  
Steel Sheets ◽  
Limit Strength ◽  
Sheet Metal Cutting

The paper is primarily focused on the determination of the ultimate strength of pressed materials in the form of steel sheets. The breaking strength of homogeneous materials such as e.g. steel sheet is not a relevant indication for pressed steel sheet waste material. The ultimate strength serves as a main parameter in the design of sheet metal cutting machines. For the design and technological design of machines and equipment for shearing steel waste in the form of pressed sheets, it is necessary to know the limit strength of the material. The paper describes in detail the experimental procedure and the principle of determining the ultimate strength of the steel waste sheet. Several dozen experimental samples of pressed metal waste were used. The very principle of the experiment consisted of sheared samples, while monitoring the shear force and the thickness of the pressed material. The ultimate strength of the shear material was calculated from the measured data. The measured and calculated data were statistically processed to increase the objectivity of the determination of the already mentioned ultimate strength parameter of the pressed waste sheets.

Determination of Exciting Power and Saturation Characteristics for Dual Laminated Core Models

2011 ◽  
Vol 291-294 ◽  
pp. 1267-1271
Author(s):  
Zhi Gang Zhao ◽  
Fu Gui Liu ◽  
You Hua Wang
Keyword(s):  
Calculation Method ◽  
Steel Sheet ◽  
Silicon Steel ◽  
Total Iron ◽  
Iron Loss ◽  
Steel Sheets ◽  
Electromagnetic Behavior

Dual laminated core models for determining exciting power (or/and specific total iron loss) and over saturation characteristics occurred at joints and silicon steel sheet was proposed and prototyped. Calculation method of exciting power at joints of transformer was presented. The saturation characteristics of laminated silicon steel sheets was obtained and analyzed. The model also can be used to investigate the relevant electromagnetic behavior of laminated core in detail.

Design and development of automatic sheet metal cutting machine

2020 ◽  
Author(s):  
R. Muthu Siva Bharath ◽  
Arunkumar Gopal ◽  
I. Maria James ◽  
S. Lakshmi Sankar
Keyword(s):  
Sheet Metal ◽  
Metal Cutting ◽  
Metal Cutting Machine ◽  
Design And Development ◽  
Cutting Machine ◽  
Sheet Metal Cutting

scholarly journals Migration of mineral oil in elastomers

2021 ◽  
Author(s):  
Tobias Förster ◽  
Artur Blivernitz
Keyword(s):  
Diffusion Coefficients ◽  
Mineral Oil ◽  
Activation Energies ◽  
Concentration Profiles ◽  
Small Reservoir ◽  
Experimental Procedure ◽  
Mineral Oils ◽  
The Absolute ◽  
Suitable Measure

AbstractThis work describes a newly introduced experimental procedure to quantify the diffusion progress of mineral oils locally resolved in NBR. Diffusion of reference oils IRM 901, IRM 902 and IRM 903 in NBR with various acrylonitrile contents was investigated. Classical sorption experiments were performed as a basic characterization and compared to the newly introduced method. Here, elastomer specimens are only being dipped with the bottom in a relatively small reservoir of mineral oil. This provides a determination of locally resolved concentration profiles of mineral oils, and the calculation of diffusion coefficients. These diffusion coefficients follow the same trends like those determined via sorption experiments. Despite differences in the absolute numbers, activation energies of diffusion can be applied as a suitable measure for the compatibility of elastomers and fluids.

Effect of Coating Layer on Advanced Stud Welding of 2024 Aluminum Alloy to Galvanized and Galvannealed Steel Sheet

2014 ◽  
Vol 794-796 ◽  
pp. 351-356
Author(s):  
Yohei Harada ◽  
Kozo Ishizuka ◽  
Shinji Kumai
Keyword(s):  
Aluminum Alloy ◽  
Steel Sheet ◽  
Coating Layer ◽  
Fracture Load ◽  
Tensile Fracture ◽  
2024 Aluminum Alloy ◽  
Steel Sheets ◽  
Sheet Surface ◽  
Stud Welding ◽  
Galvannealed Steel

High strength 2024 aluminum alloy studs were joined to galvanized, galvannealed and non-coated steel sheets by using an advanced stud welding method. Effect of the coating layer on the interfacial microstructure and the tensile fracture load of the joints were evaluated. A specially-designed stud having a circular projection at its bottom was pressed against a sheet surface. A discharge current was introduced from the upper part of the stud. Local heating could be achieved by a high current density at a contact point between the projection and sheet. The observation of joint area revealed the projection was severely deformed and spread along the sheet surface. The coating layer of the galvanized steel sheet was removed at the joint interface under the charging voltage of 200 V, while that of the galvannealed one locally remained on the steel surface even at 400 V. This would be strongly related to the melting or liquidus and solidus temperatures of each coating layer. Joining was not achieved at a low charging voltage in the non-coated and galvannealed steel sheets, while high tensile fracture load was obtained even at 200 V in the galvanized ones.

Design charts for reinforced concrete L-sections

1976 ◽  
Vol 3 (4) ◽  
pp. 479-483
Author(s):  
Maher K. Tadros
Keyword(s):  
Reinforced Concrete ◽  
Ultimate Strength ◽  
Normal Force ◽  
Basic Assumptions ◽  
Design Charts ◽  
Strength Design

The object of this paper is to present charts for the ultimate strength design of L-sections subjected to combined normal force and bending. The method of derivation of these charts is briefly described. It is general and applicable to other odd-shaped sections. It also conforms to the basic assumptions adopted in the CSA Standard A 23.3-1973. The charts can be used either for the determination of the dimensions of the section or for the check of its capacity.

Determination of the pore size of woven structures through image analysis

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
R. Angelova
Keyword(s):  
Pore Size ◽  
Single Layer ◽  
Woven Fabric ◽  
Virtual Model ◽  
Experimental Procedure ◽  
Porosity And Permeability ◽  
Woven Structures ◽  
Woven Structure ◽  
Non Destructive

AbstractThe paper presents an experimental procedure developed for determination of the pore size, shape and distribution in a single layer woven fabric, for the construction of a virtual model to be incorporated in a future CFD software package. The procedure is based on non-destructive observation and analysis of woven samples. 14 different samples of gray fabrics of 100 % cotton in plain and twill weaves are investigated. The results obtained allow the creation of reality more realistic virtual model of the woven structure, and theoretical investigation of its porosity and permeability through computer simulation.

High Frequency Ultrasonic Measurements

1988 ◽  
Vol 21 (5) ◽  
pp. 133-136
Author(s):  
N Zarsav
Keyword(s):  
High Frequency ◽  
Polymer Coating ◽  
Steel Sheet ◽  
Lamb Waves ◽  
Thin Plates ◽  
Design Features ◽  
Degree Of Cure ◽  
Double Probe ◽  
Ultrasonic Measurements

The use of high frequency ultrasonic Lamb waves to measure the thickness of thin plates and foils, is discussed and the feasibility of their application to the determination of the degree of cure of polymer coating on coated tin plated steel sheet (as used by the food can industry) is evaluated. The paper also discusses briefly the design features of the purpose built precision double probe ultrasonic goniometer used to carry out these measurements.

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