Improving the structural strength and mechanical properties of plugging material

2019 ◽  
Vol 12 ◽  
pp. 115-117
Author(s):  
A.V. Samsykin ◽  
◽  
I.I. Yarmukhametov ◽  
V.E. Trofimov ◽  
F.A. Agzamov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Structural Strength

scholarly journals Microstructures, Mineral Compositions, and Mechanical Properties of Red-Layers in Southern China

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Huizhi Zhang ◽  
Jifeng Liu
Keyword(s):  
Mechanical Properties ◽  
Structural Strength ◽  
Southern China ◽  
Damage Mechanism ◽  
Mechanical Tests ◽  
Moisture Migration ◽  
Clay Particles ◽  
Widespread Distribution ◽  
Mineral Compositions ◽  
Scanning Electron

In order to reveal the water-induced damage mechanism and mechanical properties of red-layers in Southern China, typical red-layer samples are experimentally studied by scanning electron microscope (SEM), energy spectrum analysis, XRD, and mechanical tests. The results show that some red-layer samples contain a large number of smectite and illite-smectite mixed-layer clay minerals and their microstructures are mainly stacked microaggregates in which mutual agglomeration is formed by flake and tabular clay particles. Widespread distribution micropores and fractures in microaggregates provide the necessary moisture migration channels. The various cemented materials produce a kind of irreversible structural strength, and this strength is vulnerable for the aqueous medium conditions. The influence of microstructures and mineral compositions on red-layer mechanical properties is discussed. The results could provide the reference for further research about the water-induced damage mechanism of red-layers in Southern China.

scholarly journals Increasing the construction strength of petroleum pipes operating in agressive environment

2021 ◽  
pp. 70-76
Author(s):  
V.S. Chmeliova ◽  
H.I. Perchun
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Hydrogen Sulfide ◽  
Brittle Fracture ◽  
High Resistance ◽  
Structural Strength ◽  
Aggressive Environment ◽  
The Impact ◽  
Resistance To Brittle Fracture ◽  
Hydrogen Sulfide Cracking

Purpose. Questions about ways to increase the structural strength of oil country tubular goods are considered. Alloying and heat treatment of medium-alloy steels should ensure: pro-carbonization to the structure of martensite and lower bainite with a minimum carbon content (C ≤ 0.3 %), high resistance to brittle fracture and hydrogen embrittlement, the formation of uniformly distributed finely dispersed carbides and sulphides of a round shape to reduce diffusion mobile hydrogen is absorbed by steel. Propose modes of thermal treatment of casing pipes that provide the required level of mechanical and operational properties. Methodology. We used standard techniques for determining the mechanical properties in tension, dynamic bending tests and fracture studies. Results. The modes of heat treatment of casing pipes of strength category E, L are proposed, which provide the required level of mechanical and operational properties and an increase in structural strength. Originality. A systematic analysis of the influence of various factors on the structural strength of oil country tubular goods operating in an aggressive environment has been carried out. The highest degree of correlation between the value of the impact toughness and the tough component in the fracture is shown. Cooling of pipes with a nozzle sprayer of the design of the Department of Heat Treatment of Metals of NMetAU, which provides high resistance to brittle fracture by increasing the proportion of the viscous component and changing the microrelief of the cup fracture. Practical value. The proposed technology of heat treatment of oil pipes, working in an aggressive environment, provides the required level of mechanical properties and resistance to hydrogen sulfide cracking. Keywords: structural strength; oil country tubular goods; alloying; heat treatment; strength categories;temperature and deformation parameters; hydrogen sulfide cracking; brittle fracture resistance

Effect of electroslag remelting on the mechanical properties and structural strength of 07Kh16N6 steel

1978 ◽  
Vol 14 (10) ◽  
pp. 924-927
Author(s):  
N. I. Moskvin ◽  
S. M. Kutepov ◽  
A. L. Belinkii ◽  
G. M. Glikhin
Keyword(s):  
Mechanical Properties ◽  
Structural Strength ◽  
Electroslag Remelting ◽  
07Kh16n6 Steel

Experimental Research on Effect of Hot Works on Mechanical Performance of Ship Steel Plate

2011 ◽  
Vol 311-313 ◽  
pp. 1859-1862
Author(s):  
Hua Ming Wang ◽  
Han Xing Zhao ◽  
Yong Jia Dai ◽  
Xiao Song Rui
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Steel Plate ◽  
Mechanical Performance ◽  
Structural Strength ◽  
High Strength ◽  
Shipbuilding Industry ◽  
Important Method ◽  
Fairing Process

Hot works is an important method for fairing the ship steel plate to improve the quality of shipbuilding, while the mechanical performance of the ship steel plate may be affected during the fairing process, which could result to some safe problems on the structural strength. DH32 high-strength ship steel plate, which is a kind of widely used material in shipbuilding industry, is taken as an object of the present experimental study. Some main parameters of the plate’s mechanical property through hot-works treatment for different times are investigated systematically. Through analyzing the variation of the mechanical properties, some conclusions are drawn and some useful suggestions put forward.

scholarly journals Analysis and use of SIMP method in optimization of a car hood design

2019 ◽  
Vol 140 ◽  
pp. 04017 ◽  
Author(s):  
Valeria Antonova ◽  
Stanislav Alekseev ◽  
Aleksei Tarasov ◽  
Natalia Scheglova ◽  
Oleg Klyavin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Structural Strength ◽  
Physical And Mechanical Properties ◽  
Optimization Methods ◽  
Original Structure ◽  
Simp Method ◽  
Digital Twins ◽  
Automobile Parts ◽  
Materials Used ◽  
Modelling And Optimization

The article shows the relevance of creating digital twins and conducting topological and topographic optimizations as part of improving the physical and mechanical properties of car parts using the example of a car hood. A description of the existing optimization methods is given and the principle of the SIMP method is described. The results of optimizing the design of the hood of the car using this method are presented. We demonstrate that using modern approaches to modelling and optimization of automobile parts makes it possible to achieve targets in the design and redesign, to achieve sufficient structural strength while maintaining or reducing the mass of the original structure. It is shown that modelling allows providing an array of information on the optimized part as soon as possible, as well as reducing the consumption of materials used to create it.

Finite Element Modelling for Internal Bionic Architecture Optimization of Artificial Human Bones

2011 ◽  
Vol 689 ◽  
pp. 95-101
Author(s):  
Li Jun Yang ◽  
Lian Zhou ◽  
Xi Nan Dang ◽  
Li Li Wang ◽  
Qiao Fu Chen
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Clinical Medicine ◽  
Structural Strength ◽  
Human Bone ◽  
Analysis Software ◽  
Element Analysis ◽  
Human Bones ◽  
Controlled Porosity ◽  
Architecture Optimization

Clinical medicine shows that the scaffold of artificial human bone must have a certain porosity, good connectivity and adequate mechanical strength. Controlled porosity, pore size, shape and interconnectivity of the scaffold heavily influence the structural strength, transport properties, and the micro-environment for cells and tissue in-growth. In this paper, finite element analysis software was used. A micro-porous unit with mechanical properties similar to the natural bone was produced. Then the interconnected scaffold of tissue with a specific porosity and gradient pore was built according to the optimized micro-porous unit. It was confirmed that the porosity and elastic modulus of the mold were within the bounds of human bone. Analysis using ADINA8.3 ensured that the mold had satisfactory mechanical properties of bone. Finally, STL files were generated by the software and the mold was manufactured using SLS.

Methods for determining mechanical properties and structural strength of metals at low temperatures

1971 ◽  
Vol 3 (12) ◽  
pp. 1407-1410
Author(s):  
V. I. Zmievskii ◽  
V. N. Egorov ◽  
L. I. Pyatyshev ◽  
E. P. Zamilatskii ◽  
G. G. Konradi
Keyword(s):  
Mechanical Properties ◽  
Low Temperatures ◽  
Structural Strength

SIMULATION OF SURFACE DEFORMATION USING INCONEL 718 DIC-ANALYSIS OF HEATING ALLOY

2021 ◽  
pp. 306-311
Author(s):  
Sergey Adjamskiy ◽  
Ganna Kononenko ◽  
Rostislav Podolskyi
Keyword(s):  
Mechanical Properties ◽  
Inconel 718 ◽  
Surface Deformation ◽  
Structural Strength ◽  
Correlation Method ◽  
Local Deformation ◽  
Image Correlation ◽  
Displacement Fields ◽  
Degree Of Deformation ◽  
Three Samples

. Fracture is the final stage of metal behavior under load, and the resistance that themetal gives to the development of this process, largely determines its structural strength. Inconel718 is gaining strength mainly due to the dispersion hardening in the allocation of secondaryphases. Purpose: to establish a set of mechanical properties and microstructure of heatstrengthened Inconel 718 and to investigate changes in the degree of deformation of the surfacemetal by the method of registration of macroloca l fields. Mechanical properties were determinedby standard methods on three samples. Registration of macrolocal displacement fields wasrecorded by DIC (digital image correlation) method simultaneously with stretching. The dataobtained from the DIC analy sis showed that at the time of rupture the local deformation of thesample increased to 36% sample 1, up to 50% sample 2, up to 25% sample 3. It is shown thatthe microstructure of the studied samples is homogeneous, the detected grain γ structure with theformation of duplicates, the density of the experimental samples was 98.3%.

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