Study of RIN-Insulation Mechanical Properties for High Voltage Inputs

2021 ◽  
Vol 316 ◽  
pp. 942-948
Author(s):  
Alexander Demidov ◽  
Myrzamamat Karimbekov ◽  
Regina Rodyakina
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
High Voltage ◽  
Tensile Tests ◽  
Climatic Conditions ◽  
Insulation Material ◽  
Working Ability ◽  
Bending Tests ◽  
Three Point Bending ◽  
Strength Tests

This paper presents the results of mechanical properties study for samples of RIN-insulation material (Resin Impregnated Nonwoven – non-woven resin impregnated fabric) for high-voltage inputs at various temperatures, determined by three-point bending tests, impact strength tests and tensile tests with registration of test diagrams. The mechanical properties of RIN-insulation, which ensure working ability of the whole construction of high-voltage inputs, operating in difficult climatic conditions, are determined.

scholarly journals Influence of Polymer Coatings on the Mechanical Properties of Steel Samples in Tensile and Bending Tests

2021 ◽  
Vol 12 (5) ◽  
pp. 542-548
Author(s):  
O.A. Pashkov
Keyword(s):  
Mechanical Properties ◽  
Theoretical Study ◽  
Tensile Tests ◽  
Polymer Coatings ◽  
Theory Of Elasticity ◽  
Steel Plates ◽  
Bending Tests ◽  
Three Point Bending ◽  
Coated Plate ◽  
Classical Models

: An experimental and theoretical study of the effect of polymer coatings on an epoxy-polyester base on the mechanical properties of samples in the form of steel plates has been carried out. It is shown that, despite the fact that the thickness of the coatings is only 100 μm, they have a significant effect on the mechanical properties of plates up to 1,5 mm thick, leading to a decrease in Young's modulus, tensile strength and ultimate deformations of the samples. It was shown that the elastic modulus of the coated plate cannot be determined unambiguously from tests for central tension and three-point bending. In bending tests, there is a more significant reduction in plate stiffness compared to tensile tests. This effect is confirmed by calculations within the framework of classical models of the theory of elasticity.

Flexural Properties of Polyamides: Influence of Strain Rate, Friction and Moulding-Induced Anisotropy

2014 ◽  
Vol 601 ◽  
pp. 29-32
Author(s):  
Dan Andrei Serban ◽  
Tudor Voiconi ◽  
Liviu Marsavina ◽  
Vadim V. Silberschmidt
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Tensile Tests ◽  
Flexural Properties ◽  
Induced Anisotropy ◽  
Flexural Behaviour ◽  
Bending Tests ◽  
Three Point Bending ◽  
Cooling Conditions

In recent years, advances in material testing equipment caused the determination of mechanical properties by means of three-point bending tests to lose ground in detriment to more accurate tensile tests. However, if components undergo bending deformation in service, the identification of the materials flexural behaviour is essential. The investigated material is a thermoplastic polymer, test specimens being cut in prismatic shapes from injected sheets, which present a variation in properties due to cooling conditions. This paper presents results of three-point bending tests with emphasis on the influence of strain rate and anisotropy on flexural strength and chord modulus. Results show an increase in flexural properties with strain rate and a considerable influence of anisotropy on mechanical properties.

Mechanical Properties of Composites with Geopolymer Matrices Reinforced by Basalt Fabric

2019 ◽  
Vol 889 ◽  
pp. 289-293
Author(s):  
Iva Petríková ◽  
Bohdana Marvalová ◽  
Jiří Lampa
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Tensile Tests ◽  
Bending Properties ◽  
Bending Tests ◽  
Three Point Bending ◽  
Geopolymer Matrix ◽  
Weave Fabric ◽  
Static Tensile ◽  
Properties Of Composites

The tensile and bending properties of composite materials with geopolymer matrix reinforced by layers of basalt plain weave fabric were investigated experimentally. We present the results of the quasi-static tensile tests and the quasi-static and cyclic three-point bending tests. The composite panels were made by hand laying with subsequent vacuuming. The plates were stayed in a compression press and left in a compressed state for a month. After 5 months the samples were made from the plates and subjected to tests. The material behaves as linear almost to the failure, which occurred at tensions of about 100 MPa. The elastic modulus is between 6000 and 7000 MPa.

scholarly journals Comparison of Mechanical Properties of Hemp-Fibre Biocomposites Fabricated with Biobased and Regular Epoxy Resins

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5720 ◽  
Author(s):  
Vicente Colomer-Romero ◽  
Dante Rogiest ◽  
Juan Antonio García-Manrique ◽  
Jose Enrique Crespo
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resins ◽  
Raw Materials ◽  
Green Composites ◽  
Bending Tests ◽  
Three Point Bending ◽  
Reinforced Plastics ◽  
Structural Applications ◽  
Glass Fibre Reinforced ◽  
Glass Fibre Reinforced Plastics

Bio- and green composites are mainly used in non-structural automotive elements like interior panels and vehicle underpanels. Currently, the use of biocomposites as a worthy alternative to glass fibre-reinforced plastics (GFRPs) in structural applications still needs to be fully evaluated. In the current study, the development of a suited biocomposites started with a thorough review of the available raw materials, including both reinforcement fibres and matrix materials. Based on its specific properties, hemp appeared to be a very suitable fibre. A similar analysis was conducted for the commercially available biobased matrix materials. Greenpoxy 55 (with a biocontent of 55%) and Super Sap 100 (with a biocontent of 37%) were selected and compared with a standard epoxy resin. Tensile and three-point bending tests were conducted to characterise the hemp-based biocomposite.

scholarly journals Influence of the Infill Orientation on the Properties of Zirconia Parts Produced by Fused Filament Fabrication

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3158 ◽  
Author(s):  
Santiago Cano ◽  
Tanja Lube ◽  
Philipp Huber ◽  
Alberto Gallego ◽  
Juan Alfonso Naranjo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Complex Geometries ◽  
Fused Filament Fabrication ◽  
Moisture Evaporation ◽  
Bending Tests ◽  
Three Point Bending ◽  
Different Types ◽  
Fill Pattern ◽  
The Many

The fused filament fabrication (FFF) of ceramics enables the additive manufacturing of components with complex geometries for many applications like tooling or prototyping. Nevertheless, due to the many factors involved in the process, it is difficult to separate the effect of the different parameters on the final properties of the FFF parts, which hinders the expansion of the technology. In this paper, the effect of the fill pattern used during FFF on the defects and the mechanical properties of zirconia components is evaluated. The zirconia-filled filaments were produced from scratch, characterized by different methods and used in the FFF of bending bars with infill orientations of 0°, ±45° and 90° with respect to the longest dimension of the specimens. Three-point bending tests were conducted on the specimens with the side in contact with the build platform under tensile loads. Next, the defects were identified with cuts in different sections. During the shaping by FFF, pores appeared inside the extruded roads due to binder degradation and or moisture evaporation. The changes in the fill pattern resulted in different types of porosity and defects in the first layer, with the latter leading to earlier fracture of the components. Due to these variations, the specimens with the 0° infill orientation had the lowest porosity and the highest bending strength, followed by the specimens with ±45° infill orientation and finally by those with 90° infill orientation.

Mechanical properties of several nickel-titanium alloy wires in three-point bending tests

1999 ◽  
Vol 115 (4) ◽  
pp. 390-395 ◽  
Author(s):  
Hirokazu Nakano ◽  
Kazuro Satoh ◽  
Robert Norris ◽  
Tomoaki Jin ◽  
Tetsuya Kamegai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Nickel Titanium ◽  
Bending Tests ◽  
Three Point Bending

scholarly journals Mechanical properties of laterally loaded threaded rods embedded in softwood

2021 ◽  
Author(s):  
Haris Stamatopoulos ◽  
Francesco Mirko Massaro ◽  
Jalal Qazi
Keyword(s):  
Mechanical Properties ◽  
Core Diameter ◽  
Bending Tests ◽  
Three Point Bending ◽  
The Core ◽  
Threaded Fasteners ◽  
Characteristic Values ◽  
Strength And Stiffness ◽  
Screw Threads ◽  
Laterally Loaded

AbstractAt present, the mechanical properties of laterally loaded threaded fasteners with large diameters embedded in timber elements remain unknown. An experimental study of laterally loaded threaded rods with wood screw threads embedded perpendicular to grain in softwood elements (spruce and pine glulam and spruce LVL) is presented in this paper. Embedment tests with the load acting parallel and perpendicular to grain were carried out and the embedment strength and stiffness were quantified. For some test series, the experimental embedment strengths were lower compared to the predictions according to Eurocode 5 in terms of both mean and characteristic values. This finding indicates that the predictions by Eurocode 5 are not always conservative. To investigate the effect of the thread, additional series of embedment tests were carried out with smooth dowels featuring a diameter approximately equal to the core diameter of the threaded rods. Finally, the yielding moment of threaded rods was quantified based on a series of three-point bending tests of threaded rods. The experimentally determined yielding moment was significantly higher than the prediction of Eurocode 5.

Influence of Annealing Treatment on Formability and Springback for Magnesium Alloy Sheets

2010 ◽  
Vol 443 ◽  
pp. 189-194 ◽  
Author(s):  
Dae Yong Kim ◽  
Bum Kyu Hwang ◽  
Young Seon Lee ◽  
Sang Woo Kim ◽  
Young Hoon Moon
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Room Temperature ◽  
Annealing Treatment ◽  
Tensile Tests ◽  
Strip Casting ◽  
Bending Tests ◽  
Magnesium Alloy Az31 ◽  
Twin Roll ◽  
Springback Angle

The purpose of this work is to experimentally investigate the effect of annealing treatment on the formability and springback at room temperature for magnesium alloy AZ31 sheets, which were produced by rolling through reversible warm mill after twin roll strip casting. Microstructure evolutions were investigated using OM after annealing at temperature raging from 350°C to 450°C. Tensile tests at room temperature were performed to show the influence of annealing treatment on mechanical properties. In order to evaluate the formability in stamping processes, the Erichsen cupping tests were carried out and the Erichsen number were measured. As for springback, the V shaped air bending tests were achieved and the angle changes after springback were collected. The experimental results showed that Erichsen numbers increased by the annealing treatment, while springback angle decreased.

Study on Automobile Body Performance of Honeycomb Sandwich Composite Material

2012 ◽  
Vol 567 ◽  
pp. 146-149 ◽  
Author(s):  
Xue Mei Fan ◽  
Jian Feng Wang ◽  
Cheng Jin Duan ◽  
Xiang Xin Xia ◽  
Zhao Hui Wang
Keyword(s):  
Mechanical Properties ◽  
Sandwich Structure ◽  
Testing Machine ◽  
Sandwich Composite ◽  
Element Analysis ◽  
Bending Tests ◽  
Three Point Bending ◽  
Honeycomb Sandwich ◽  
Core Thickness ◽  
Honeycomb Sandwich Structure

In order to analyze the mechanical properties of Carbon/epoxy facings-Aluminum honeycomb sandwich structure, we simulated panels of different layers and core thickness using ABAQUS finite element analysis program. And three-point bending tests and shear tests were made on the same panels using electronic universal testing machine. In addition, we also made the same three-point bending tests on steel tubes to get a comparison with honeycomb sandwich panels. It could be seen that, the simulated results were basically identified with experimental results. The results indicated that core thickness played an important role in the panels’ bulking modulus, and number of carbon fiber layers decided the shear strength. As a whole, honeycomb sandwich structure was suitable for use in the car body with good mechanical properties under premise of lighter.

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