Search results

It directly affects efficiency of the recycling maintain of products and costs.
The properties of hives are determined by the location of the mirror images and the material of parts.
Tolerances, deviations and some other factors can be measured by the determinant criteria.
Wu: Journal of Mechanical Engineering.
Duan: Journal of Mechanical Engineering.

Sánchez1, f 1Department of Mechanical Engineering.
Bilbao, Spain 2Department of Mechanical Engineering.
Amongst them, Mechanical Engineering undergraduate and graduate are the most demanded ones.
Taking into account these two factors, having a tool that is able to predict temperatures reached by the piece before performing the experimental work is extremely interesting.
The main process parameters are the laser power, beam quality, federate, part geometry, laser trajectory, material properties, etc.

A Strategy for On-line Monitoring the Crosslinking Degree of 3D Printing Hydrogel Fiber Based on Dual-threshold Enhancement Method Yu Li1, Pingyan Bian2 1 School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, Henan, China 454000, liyu@hpu.edu.cn 2 School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, Henan, China 454000, bianpy@hpu.edu.cn Keywords: image enhancement, dual-threshold, crosslinking degree, 3D printing Abstract.
The crosslinking degree is one of the factors that determine the mechanical properties of the hydrogel fiber and scaffolds.
It raised two demands of the enhancement of crosslinking image: first the processing and analyzing of image should be modified for operator’ real-time observation; second the residual noise cannot be too big to affect the precision of crosslinking degree.
According to the above problems, the dual-threshold enhancement method was applied to process the crosslinking image of hydrogel fiber fabricated by the 3D printing process, in order to realize an accurate real-time measurement of crosslinking degree and ensure the mechanical properties of hydrogel fiber and scaffolds.
But after the image enhancement processing, the error derived from the pre-enhancing image can reduce, the weak bright portion of the image will be strengthened, the color gradation of the crosslinking image will be improved, the physical properties of the image will be restored, and the measurement of crosslinking degree will be more accurate.

The range of forces and accelerations are dependent on factors such as drop height, weight, shape, impact orientation and the surface onto which it is dropped.
Because the mesh size of the BGA tin balls would affect accuracy in stress and computer time.
The Component List of Material Properties.
In the LS-DYNA program, the basic material properties required for the linear elastic dynamic impact model are generally defined by the following parameters: density, Young's modulus, and Poisson ratio.
The mechanical properties for corresponding elements are listed in Table 1. 2.2 Loading Conditions The initial loading condition in this study assumes to be a half-sine wave with a peak value of 150 Grms and a duration of 6 ms.

These factors affect the drying kinetics by influencing the pathways for moisture migration within the product [23].
Other factors considered are its capacity to withstand and absorb moisture if condensation occurs within the system, as well as its relatively low cost and availability.
Thus I2RT=maCpa(Ti-Tf) (2) The only factor from the equation above that can be changed throughout the drawing process is the temperature differential because it affects how long things take to dry.
Borges-machado et al., “˜ o pepper seeds Drying kinetics and water adsorption properties of jalape n ( Capsicum annuum L .): A study aiming at their recovery and integral exploitation,” vol. 204, no.
Chukwu, “Thermodynamic Properties and Drying Kinetics of Potato Slices using Hot Air Drying,” vol. 10, no. 1, pp. 3224–3236, 2023

In the simulations, the mechanical behavior of face-sheets and core were modeled with the material type 3 (MAT_PLASTIC_KINEMATIC) in the LS-DYNA, which is bi-linear elastic-plastic constitutive relationship [7].
Table 3 lists the mechanical properties of materials in the modeling.
Some factors such as the thickness of face-sheets and core, materials of face-sheets, and impact energy that can affect the dynamic response of sandwich panels were discussed.
International Journal of Mechanical Sciences 2006; 48(10): 1031-1045

Shape of rotor disk is cylindrical annular, and its material has properties of high magnetic inductive capacity and low residual magnetism, and the rotor is connected through the connection flange and shaft.
Braking torque is one of the most important technical parameters of eddy current retarder, on one hand it affects the vehicle's braking performance, on the other hand it is basis on matching retarder for automotive.
When axial thickness is selected two main factors must be considered, one is strength, and the deformation must be less than the allowable value in a greater braking torque; the other is heat capacity, when a larger axial thickness is selected the rate of temperature rise can be reduced during braking.
　 　　 　　 (5) where —braking torque of the retarder, N·m; —rolling radius of wheel, m; —mechanical efficiency of transmission; —ratio of main decelerator.
Chinese Journal of Mechanical Engineering,　2008, 21(4):71-75　 [3] HE Jianqing.

However, Nafion membranes suffer from high cost and the losses of performance such as conductivity and mechanical strength at higher temperature (above 100 oC) [3].
Among those aromatic polymers, sulfonated polyimide (SPI) was proved to have excellent thermal stability, high mechanical modulus and good film forming ability, with sulfonic acid groups attached on both polymer main-chain and side-chain [6].
It has been reported that the water uptake and proton conductivity of these SPIs displayed similar properties, that is, the proton conductivity greatly depends on water uptake [7].
(3) where C0 is a threshold volume fraction required for protons to transport through membrane; σ0 is a pre-factor determined by carrier number ion transport mobility; n refers to a critical exponent that controls the scaling behavior for conductivity.
The proton conductivity is affected by ion exchange capacity, water uptake, and polymer structure.

Thus ηGO == 0.652 (1-4) Dump Truck centroid position is the centroid position of the center of mass position when fully loaded vehicle , dump truck on the use of performance ( such as car braking , handling stability, etc. ) greatly affected.
[2] Liu Minjie , such as the structure and properties of several lifting mechanism analysis [J] professional automotive , 1999, ( 2 ) :23 - .. 25
[3] Wang Hui lift hydraulic system design [J] Mechanical Design , 1996, ( 4 ) :25 - 27
Mechanical design, 1996 04
Mechanical design and manufacturing engineering, 1999 06 .

Especially at present, Al-Si-Cu series alloy castings are receiving the increased application in automotive industry due to their outstanding mechanical properties, low shrink rate, good flow property and little hot cracking tendency [1].
It has been demonstrated that the microstructures and properties of Al-Si-Cu alloys are strongly affected by casting method.
So far, the researches concerning the cast Al-Si-Cu series alloys mainly focus on their microstructure, impact and tensile properties [7-9], and few on their fatigue properties [10].
In addition, the slip dislocations are easily blocked by grain boundary or sub-boundary so as to stagnate and accumulate, which is also the paramount factors resulting in the cyclic strain hardening.
Fatigue properties and microstructure of Al-Si-Cu system casting alloys.