Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: February 2016
Authors: Sergey Sergeevich Yakovlev, Michail Vasilievich Gryazev, Vadim Yurievich Travin
., associate professor of the Tula State University, Russia, Tula mpf-tula@rambler.ru Keywords: anisotropy of mechanical properties, strain, blank, stress, force, destruction, drawing with wall-thinning.
These are objects of higher requirements as to their mechanical properties and their quality characteristics.
The blank material is rigid-plastic with a cylindrical anisotropy of its mechanical properties.
(24) The above ratios allowed us to find how blank material mechanical properties anisotropy, technological parameters, blank and part geometrical dimensions, degree of strain, matrix taper angle, and the data for friction between the tool and blank surfaces – how all these factors affect the kinematics of material flow, the stressed and strained state of the blank, the force modes and the extreme limits of deformation.
The mechanical properties and fracture model of metals.
Online since: February 2016
Authors: Stanislav Spirk
The simulated behavior of passenger impact can predict useful information for experimental validation of floor properties.
Progress of the fall depends on many factors.
Therefore the mechanical properties of individual parts of floor must be measured.
This knowledge of the behavior of the floor will greatly affect proposal validation experiment and tests of mechanical properties.
Rubenstein, Falls in older people: epidemiology, risk factors and strategies for prevention.
Online since: July 2022
Authors: Piotr Mysliwiec, Romana Ewa Śliwa
In this paper, the mechanical properties (tensile strength) of the samples of welded 2024-T3 aluminum alloy sheets were investigated to determine the best rotational speed and welding speeds.
The work determines the optimal parameters using one of the optimized methods to ensure proper welding performance based on tensile strength, study the obtained optimal parameters of mechanical properties and performance using the design of experiments (DOE) technique and development of models.
As an input factors tool rotation per minute, feedrate and number of grooves were selected.
Input factors included in experiment.
P-value for factors is less then 0.05 which means that model is significant.
Online since: August 2014
Authors: Anh Tuan Do, Quang Cherng Hsu, Kuei Cheng Yeh, Jhan Hong Ye
Improvement on die-casting efficiency and property of aluminum alloy casing.
Avalle et al [1] for static and fatigue strength of a die cast aluminium alloy under different feeding conditions indicated that three batches of different samples conducted would be porosity and impact casting defects, thereby affecting the static and fatigue strength.
Experimental data The parameter design study involves control and noise factors.
Measure of interactions between these factors with regard to robustness is signal - to - noise (S/N) ratio.
The second of simulation factors Table 8.
Online since: December 2024
Authors: Xue Jiang, Nian Li, Xiao Mei Jiang, Zhen Guang Hu
The final quality of SAP geopolymers is affected by several factors, including material fineness, reactivity, acid concentration, curing temperature, and molar ratios (Si/Al, Si/P, and P/Al).
Higher phosphoric acid concentrations can significantly improve the mechanical properties of geopolymers because phosphoric acid, as an acidic activator, can promote bonding reactions in the polymer structure, making the material denser and stronger.
Therefore, choosing the right curing temperature is a key step in optimizing the properties of geopolymers.
Excessively high temperatures affect the properties.
Properties of Red Mud-Based Foamed Geopolymer [J].
Online since: May 2016
Authors: Yan Bin Shi, Xiao Geng, Yuan Yuan Lv, Shu Dong
Analyzing the result with ANOVA method it found that: Cutting thickness and cutting speed is the most significant factors for cutting performance, mixing rate only had an effect on the surface roughness.
Nozzle diameter and the interaction between feed rate and abrasive mass flow are critical factors affecting the depth of cut.
Effects of nozzle diameter, stand-off distance, jet pressure and rock properties on Supercritical Carbon Dioxide Jet are consistent with that of high pressure Water Jet.
The consistency and elasticity of materials are important factors to impact cutting performance.
Effect of liquid properties on the stability of an abrasive water jet.
Online since: May 2015
Authors: Adriana Munteanu, Vasile Manole, Margareta Coteaţă, Laurenţiu Slătineanu
SWOT analysis of the drilling process Systemic Analysis of the Drilling Process In order to highlight the parameters of technological interest, the factors able to affect the values of parameters of technological interest ​​and the correlations among the input and output factors of the drilling process, the method of systemic analysis could be used.
As drilling process input factors, one can take into account: Cutting parameters; Tool geometrical characteristics and, respectively, the characteristics of drilling tool material; Workpiece material properties; Characteristics of machining equipment; Type and properties of cutting liquid.
The factors that can disturb the drilling process of drilling could be: Vibrations; Possible variation of workpiece material properties etc.
In case of Ishikawa diagram from figure 4, as factors able to affect the productivity of drilling process, one took into consideration: Fig. 5.
Sharpening a drill on Proxxon type equipment - Cutting parameters (depth of cut, axial feed, cutting speed); - The type and properties of drilling tool active zone (mechanical properties, wear resistance, corrosion resistance etc.); - Geometrical characteristics of drilling tool active zone (sizes of clearance angle, back-rake angle, size of transversal edge etc.); - Dynamic and kinematic characteristics of machining equipment (sets of rotation speeds, axial feeds, power of electrical motors, rigidity of technological system etc.); - Type, properties and ways of cutting liquid circulation in the machining zone.
Online since: October 2010
Authors: Min Li Zheng, Shu Cai Yang, Yi Hang Fan
A. also thinks that the rigidity and cutting speed are the two main factors to affect the chip shape [5].
Titanium alloy material of Ti6Al4V has the following properties as shown in Table 1.
Table1 Material properties of workpiece Material Properties TiAl6V4 Young's modulus(GPa) 114 Poission's ratio 0.342 Extensive ratio 10% Tensile strength (MPa) 920 Yield strength(MPa) 860 Hardness(Bhn) 320 Experimental Equipments.
In the high speed cutting process, a large amount of heat is generated by friction and other factors.
Zhang: Mechanical Design and Manufacture Vol.5 (2001), p.83
Online since: October 2013
Authors: Chang Yong Li, Long Jiang, Yang Liu, Zhi Ming Xu
The properties of 52.5ordinary silicate cement and F-II class fly ash are listed in Table 1 and Table 2.
Table 1 Main physical properties of cement Fineness (%) Density (kg/m3) Water dosage of standard consistency (%) Setting time (min) Flexural strength (MPa) Compressive strength (MPa) initial final 3d 28d 3d 28d 9.2 3110 29 179 286 5.7 9.2 33.3 53.5 Table 2 Main properties of fly ash Density (g/cm3) Fineness (%) Ignition loose (%) Water demand ratio (%) Water content (%) SO3 (%) 2.19 6.3 7.5 97 0.04 2.8 In the experiment, three water-binder ratio was adopt as 0.4, 0.5 and 0.6 respectively.
The calculated active factors of fly ash in mortars with different water-binder ratio and admixing amount of fly ash are shown in Table 5.
The active factor for compressive strength is affected greater by the water-binder ratio.
Li, Evaluation of relations among basic mechanical properties of concrete with machine-made sand, Advanced Materials Research Vols. 418-420 (2012) 473-476
Online since: September 2013
Authors: Tuo Li, Hong Bai Bai, Chun Hong Lu
Mechanical properties of knitted-dapped metal rubber are influenced by many factors, such as wires’ material and diameters, sample’s thickness and density, grooves’ depth and width, and the netting mode.
The testing machine is applicable to tests of mechanical properties for both metal and non-metal material.
In order to insure the stability of mechanical properties, test-pieces were all repeated loading and unloading for 50 times before tests.
Stiffness and damping and the performances of knitted-dapped metal rubber are hardly affected by frequency.
(3) Stiffness and damping of knitted-dapped metal rubber are almost not affected by frequency
Showing 6701 to 6710 of 26166 items