scholarly journals IMPROVEMENT OF MICRODESINTEGRATION PROCESSES FOR SAND OBTAINED FROM A COMPLEX DEPOSIT OF PRECIOUS METALS AND CHARACTERIZED BY HIGH STRENGTH CHARACTERISTICS

2017 ◽  
pp. 4-10
Author(s):  
N. P. Khrunina ◽  
A. Yu. Cheban
Keyword(s):  
Precious Metals ◽  
High Strength ◽  
Strength Characteristics

Experimental Research of the Durability, Crack Resistance of the Normal Sections of Bending Elements Produced of Rubber Concrete with Fiber and their Deformability

2018 ◽  
Vol 931 ◽  
pp. 232-237 ◽  
Author(s):  
Aleksei E. Polikutin ◽  
Yuri B. Potapov ◽  
Artem V. Levchenko
Keyword(s):  
Crack Resistance ◽  
Experimental Research ◽  
High Strength ◽  
Strength Characteristics ◽  
Material Consumption ◽  
Load Bearing ◽  
Fiber Concrete ◽  
Rubber Concrete ◽  
Concrete Elements

The article describes experimental research of bending rubber fiber concrete elements with favorable deformation-strength characteristics. The use of such a material as fiberrubcon in load-bearing structures due to its high strength leads to a decrease in material consumption and weight of structures.

Effect of crosslinking agents on the strength characteristics of cellulosic fabrics using 23 32 mixed level factorial

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Farhana Naeem ◽  
Fareha Asim ◽  
Muhammad Tufail
Keyword(s):  
High Strength ◽  
Strength Characteristics ◽  
Blend Ratio ◽  
Tear Strength ◽  
Content Type ◽  
Factors Affecting ◽  
Acrylate Copolymer ◽  
Curing Method ◽  
Crosslinking Agents ◽  
Significant Factors

Purpose Low pilling and wrinkle-free appearance of cellulosic fabrics are always demanded. Resin finishes are applied to improve these properties, but there is an adverse effect of the resin finish as it tends to reduce the strength of the fabrics. Therefore, the effect of the two most important finishes; anti-pilling and resin finish, on the strength characteristics of 100% viscose and 50:50 Viscose/cotton plain and satin fabrics were investigated in this paper. The purpose of this study is to identify significant factors affecting the strength of fabrics finished with crosslinking agents [non-ionic acrylate copolymer and (dimethyloldihydroxyethyleneurea)]. Design/methodology/approach A statistical model of 23 32 mixed level factorial design was used for the study. Appratan N9211 (A) and Arkofix NF (B) were tested at three concentrations, whereas three factors fabric; weave (C), blend ratio (D) and curing method (E) were tested at two levels. The performance of the finish was evaluated by two response variables, which were tensile and tear strength. Findings The various conditions of high strength values of the fabrics were presented in this paper. It was found that the tear strength of the fabrics increased after finishing except for 50:50 viscose/cotton plain fabric, whereas the tensile strength of plain fabrics is better at shock cure and for a satin normal cure is better. The model adequacy plots exhibit that the assumptions of normality and independence are not desecrated. Moreover, the values of “predicted R2” are in reasonable agreement with the “adjusted R2,” which confirms that models have been accounted for most of the inconsistency. Originality/value This paper is a part of my PhD dissertation. Unlike the previous studies, this paper investigated the effect of two crosslinking agents, Appretan N9211 as anti-pilling and Arkofix NF as wrinkle resistant agents on 100% viscose and 50:50 viscose/cotton plain and satin. Three different concentrations of both the crosslinking agents were used. Also, fixation of the finishes was carried out at a normal cure and shock cure.

Study of Strength and Deformation Properties of the Composite Reinforcing Bar from the Continuous Basalt Fiber

2020 ◽  
Vol 1013 ◽  
pp. 132-138
Author(s):  
L.Yu. Stupishin ◽  
S.G. Emelyeanov ◽  
E.V. Savelyeva ◽  
M.L. Moshkevich
Keyword(s):  
Composite Structures ◽  
Test Procedure ◽  
Basalt Fiber ◽  
High Strength ◽  
Test Method ◽  
Strength Characteristics ◽  
Reinforcing Bar ◽  
Low Weight ◽  
Deformation Properties ◽  
Weight One

Composite structures require the use of modern reinforcing materials combining high strength characteristics and resistance to aggressive influences with low weight. One of the promising materials for the production of reinforcing products is basalt roving. The high strength of the thread in combination with fragility imposes certain limitations on its placement in the material, and requires new approaches to the design of the reinforcing bar itself. The article investigates the strength characteristics of a composite reinforcing bar made of a basalt complex thread proposed by the authors. The features of the test procedure and the mechanical characteristics of the reinforcing material are described. The effectiveness of the applied test method developed in the process of testing reinforcing rods is shown. An increase in the tensile strength of a composite reinforcing bar based on basalt fiber is established in comparison with products from fiber and roving.

704 Spot Welded Tensile Strength Characteristics in Ultra High Strength Steel Sheets

2016 ◽  
Vol 2016.53 (0) ◽  
pp. _704-1_-_704-2_
Author(s):  
Yu KITAHARA ◽  
Junya NAITO ◽  
Shota CHINZEI ◽  
Akira IBANO ◽  
Yuki SHIMIZU ◽  
...  
Keyword(s):  
Tensile Strength ◽  
High Strength Steel ◽  
High Strength ◽  
Strength Characteristics ◽  
Steel Sheets ◽  
Ultra High Strength Steel ◽  
Spot Welded

scholarly journals Stress-strain state of friction joints with laser treatment of contact surfaces

Vestnik MGSU ◽  
2019 ◽  
pp. 72-82
Author(s):  
Martynov Gleb V ◽  
Aleksey I. Makarov ◽  
Elena A. Morina ◽  
Daria E. Monastyreva
Keyword(s):  
Safety Margin ◽  
High Strength ◽  
Hydraulic Press ◽  
Surface Cleaning ◽  
Laser Cleaning ◽  
Strength Characteristics ◽  
Future Research ◽  
High Tech ◽  
Widespread Application ◽  
Contact Surfaces

Introduction. Researched is conducted to determine the possibility of using an alternative method - laser cleaning. Laser systems have proven themselves in many areas and are a high-tech and effective solution for many construction problems. Despite this nowadays sandblasting is the most common method of processing contact surfaces of high-strength bolted joints - an outdated technology, with high equipment wear and even dangerous to people’s health. Materials and methods. Sandblast and laser-treated specimens were tested for shear. Before testing, the roughness of the contact surfaces and the tension force of high-strength bolts were tested. During the test, the readings of the meter and dial-indicator were taken. The experiments were carried out on a hydraulic press IPS-500, the samples were provided in a processed form. Results. According to the data obtained, strain graphs were plotted and the shear forces of the samples were calculated. Calculated efforts were compared with standard values. The results show the compliance of samples with the requirements of SP 35.13330.2016 “Bridges and pipes” in terms of strength characteristics. Samples with laser surface cleaning have a safety margin value similar to sandblasted samples. Conclusions. Comparison of the strength characteristics proves the possibility of using laser cleaning of the contact surfaces of friction joints. After the transition from outdated technologies, the process of surface preparation can be made economical and environmentally friendly. The obtained values and data can be entered into a number of regulatory documents, including SP 35.13330.2016 “Bridges and pipes” for future research and the widespread application of the method.

Sign in / Sign up

Export Citation Format

Share Document