Search results

The residual stress of machined surface is an important factor affecting the fatigue strength of parts.
Residual stress is a very complex issue, process parameters, the tool geometry parameters, material matched and processing factors all affect the residual stress.
(2) When cutting the 45# steel, with the increase of cutting depth, the trends affecting of cutting force and cutting temperature of the WF and QF Groove cutting inserts are same, but the margin of cutting force and cutting temperature of the QF cutting inserts is larger than the WF.
International Journal of Mechanical Sciences. 2005, 47:1611-1628
Mechanical Engineers and Engineering Manufacture 2002,216 (1):47-54

Abstract: For the high-speed machining aero engine casing hole, according to the principle of metal forming and the characteristic of metal cutting plane strain, with selecting some key physical factors of the cutter - chip contact friction and abrasion model, the Cartesian orthogonal cutting model of aero engine casing hole was established by using the Deform, a sort of finite element analysis software.
So cutting temperature directly affects the tool life and the precision of work piece [9], and chosen as the standard to select cutting parameters.
Due to difficult cutting properties of high-temperature alloys, the cutting zone has a high temperature.
Mechanical analysis of tool.
Due to the high temperature alloys containing a lot of intermetallic compounds, which makes the mechanical properties and heat-resistant quality of the material change great.

Solution of selection of suitable options for worn-out belts processing By selection of processing option it should take into account the complex of factors which affect processing of reverse logistics elements.
These factors are for example logistics costs for re-processing, economic situation of the country, scientific-technical progress.
These factors present only a smart part of the factors which affect reverse logistics elements re-processing.
In the choice of treatment should take into account the complex factors that ultimately affect the processing element of reverse logistics.
These factors represent only a small part of the factors that affect the processing elements of reverse logistics, entering the back of the material flow.

The thermoelectric properties were improved due to the low thermal conductivity as a result of In filling and the optimum carrier concentration caused by Ni doping.
On the other hand, the substitution of dopants for Co or Sb can affect the electronic structure and electrical properties and cause a substantial change in the carrier mass.
Anno et al. [18] reported that Ni had a strong influence on the electronic properties of CoSb3 due to electron-phonon interactions.
In this study, In-filled and Ni-doped CoSb3 skutterudites were prepared, and the effects of filling and doping on the thermoelectric properties were examined.
In0.25Co4-xNixSb12 skutterudites have power factors ranging from 1.5´10-3 to 3.9´10-3 W/mK2 at all temperatures examined.

Titanium and its alloys are notorious for their poor thermal properties and are classified as difficult-to-machine materials.
Poor thermal conductivity of titanium alloys retards the dissipation of heat generated creating very high temperatures at the tool-workpiece interface, thus adversely affecting tool life.
It can be classified as geometrical error and errors regarding workpiece material properties.
The weighting factors are assigned such that their sum is always equal to one.
Table 12 shows the various cases of weighting factors.

The sort, number, shape, orientation, and dispersion of the matrix's fibres, as well as other matrix-related factors, affect the character and performance of FRC.[6] Copper wire has superior mechanical characteristics and flexibility compared to most steel fibres.
On the other hand, the strength decreases due to the higher perlite aggregate.[10] Isopescu et al. (2023) investigated the effects of adding perlite to concrete and how it affects its physico-mechanical properties.
The Marshall Stability and Indirect Tensile Strength tests are two of several experiments performed to determine the mechanical properties.
Ibnul Haqi, “The Mechanical Properties of Lightweight Concrete Made with Lightweight Aggregate Volcanic Pumice,” 2022, doi: 10.5220/0008906500002481
Petre, “Assessment of Thermal and Mechanical Properties of Cement-Based Materials-Part 2: Perlite Concrete,” 2023, doi: 10.20944/preprints202304.1217.v1

Fiber morphology is heavily affected by both solution properties and processing parameters.
The two factors both affect the electric field generated in the set-up; increase in voltage increases the electric field while increase in tip-to-collector distance decreases the electric field.
The voltage effect and the interaction between voltage and tip-to-collector distance are the significant factors that affect the size of beads with p-values of 0.0088 and 0.0135, respectively.
At the settings chosen for the study, interaction effects between factors prevailed.
Huan et al., Effect of experimental parameters on morphological, mechanical and hydrophobic properties of electrospun polystyrene fibers, Materials, Vol. 8 No. 5 (2015), 2718–2734

Li 1,e 1 College of Mechanical Engineering, South China University of Technology, Guangzhou 510641, China a dengwenjun@163.com, b mewxia@scut.edu.cn, czhouzhaoyao@hotmail.com, d mewpchen@scut.edu.cn, emehjli@scut.edu.cn.
A three-dimensional coupled thermal-mechanical model of ball burnishing process is developed using commercial explicit finite element code MSC.
Temperature-dependent material properties are also considered in this analysis.
The number of passes is one of the most significant factors affecting (c) n=3 Advances in Materials Manufacturing Science and Technology 662 the maximum residual stress and the maximum depth at the compressive stress state (Fig.6).
A three-dimensional coupled thermal-mechanical model of ball burnishing process is presented in this paper.

The acoustic model of ultrasonic lapping was proposed, the track equations of ultrasonic lapping with different vibration modes were deduced, the influencing factors of lapping tracks were obtained, and the lapping tracks with different lapping parameters had been emulated.
In the paper, on the base of common lapping, ultrasonic vibration was adopted to realize the ultraprecision machining of hard-brittle materials, the lapping tracks of ultrasonic lapping and common lapping with different lapping parameters were simulated, which have some significance to guide the production practice for the engineering ceramics parts meeting the requirements of precision, surface roughness and material properties.
During ultrasonic lapping, the high-frequency electric oscillations generated by ultrasonic generator becomes mechanical vibration through transducer, the minute mechanical vibration is magnified and transferred to vibration lapper by amplitude pole, which makes the vibration lapper generate regular forced vibration, and the oilstone generates high frequency vibration droved by vibration lapper, then the workpiece is lapped with vibration.
From the relative motion equation, we can know that the track length will be affected when the speeds change.
Conclusion The acoustic model of ultrasonic vibration lapping is proposed, the track equations of ultrasonic lapping with different vibration modes are deduced, the influencing factors on lapping tracks are obtained, and the lapping tracks of ultrasonic lapping and common lapping with different lapping parameters have been simulated.

Test batch samples tensile properties compared to a knit fabric.
The Version 1 stack proved to have the highest washing reliability and elastic properties based on test sample results.
During tensile tests, it was seen that the mesh and knit fabric on the commercial suit have contrasting elastic properties (Fig 7b).
Still, the mesh and knit fabric change the suit's elasticity by then also affecting the circuit.
These observations illustrate how unknown factors such as commercial hydrophobic coatings or specialist textile materials used in commercial products can easily interfere with the test results obtained.