Search results

Research on Fractal Permeability Model for Cold-pressed Oil Cake Zhixian Sun1,a, Xiao Zheng1,b, Guoxiang Lin1,c, Xiaocong Ren1,d 1Institute of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023, P.
There will be some factors that may destroy the structures of the oil cakes during the removing progress.
(7) Eq.2 shows that the actual length of the pee page pore LT(λ) is the another key factor that affects the pore flow in the Hagen-Poiseuille formula [4] and the modified formula with combing fractal theory and section size S is given by:
One reason for this is the visco-elastic-plastic properties [10] of the vegetable oil that the elasticity, viscosity and plasticity behave differently at different pressure during the pressing process.
Porous medium transport properties of the research progress of fractal analysis.

Moreover, PMMA is more resistant to degradation because, contrary to PDMS, PMMA does not degrade in mechanical properties [33].
Based on the study by Ibrahim et al., for a DLP printer type B9R Creator using B9R-1-Red resin, the layer thickness of 50 µm with exposure time of 9 seconds have better mechanical properties.
Barbosa, Human Bone Marrow Mesenchymal Stem/Stromal Cells Preserve Their Immunomodulatory and Chemotactic Properties When Expanded in a Human Plasma Derived Xeno-Free Medium, Stem Cells International, (2017) [8] N.
Wolcott, Effects of processing method and fiber size on the structure and properties of wood-plastic composites, Composites Part A: Applied Science and Manufacturing, 40 (2009) 80–85
Buang, A Review of the Properties and Applications of Poly (Methyl Methacrylate) (PMMA), Polymer Reviews, 55 (2015) 678–705 [32] A.

The mechanical properties of FRP jackets are presented in Table 1 and Table 2 for each FRP-confined column.
Fig. 1 Test setup Fig. 2 Lateral displacement history Experimental Results It is noticed that the definitions of ductility parameters such as curvature ductility factor, displacement ductility factor and drift ratio reported in available literature are different from one program to another.
Effects of Different Variables on Seismic Behavior of Columns Based on the measured hysteresis loops of M-f and V-Δ relationships of columns shown in Fig. 3 to Fig. 6, the most important variables affecting a column’s seismic behavior were identified to be the amount of FRP confinement, the level of axial load, the P-Δ effect and the type of FRP materials.
Meanwhile, the significant detrimental influence of axial load level, kp, on the curvature ductility factors, μf, the maximum number of lateral displacement cycles and the ultimate lateral deflection until final column failure were clearly revealed.

High aspect ratio silicon carbide (SiC) microstructures are needed for microengines and other harsh environment micro-electro-mechanical systems (MEMS).
Silicon carbide has superior mechanical properties at elevated temperatures, but micromachining methods for SiC are not yet well-developed.
This 2 3 full factorial design (a method used to evaluate more than one factor simultaneously) was augmented with five repetitions of center point conditions (75 W, 12 mT, 13 s) to provide a measure of process stability and variability.
Of the three parameters studied, pressure had the least significant effect on etch rate, probably because pressure affects etch rate through competing mechanisms.

These superalloys have good mechanical properties but low oxidation resistance at high temperature and aggressive gases.
Important factors, which influence the chemical and phase composition of aluminide coatings are thickness of platinum electroplating coatings, parameters of platinum diffusion treatment and parameters of aluminizing [11-13].
Sayre: Factors affecting the microstructure of platinum-modified aluminide coatings during a vapor phase aluminizing process, Surface & Coatings Technology 203 (2009) 1264–1272 [13] M.

This has led largely to the development of algorithms and their relatively mechanical application in different domains.
Variations in Health Care Use This paper suggests to identify and quantify the observed variations in health care provisions and the contributing factors.
The challenge is not to rely on crude extrapolations from current means but to understand the underlying behaviors and how they affect workforce participation.
Therefore, one can perform location for private practitioners, what factors influence choice of practice location (including rural/urban), and for employed staff, the choice of location and type of facility (private or public); choice of specialty for what factors attract and retain professionals to different areas of specializations; and retention and turnover for factors that enhance retention in the nursing workforce, the extent to which medical practitioners respond to incentives for rural practice and whether they stay there.
This paper suggests to focus on model logics for removing false knowledge and dispelling inconsistencies that follow epistemic properties: veridicality, introspection and consistency; and majority (or consensus, or arbitrary) based logics for resolving conflict that have the property of obeying the weighted majority principle in case of conflicts.

This type of corrosion adversely affects the bond at the steel plate/concrete interface and is difficult to monitor during routine inspection.
The advantages of using Fiber reinforced polymer (FRP) composites are mainly due to their high modulus of elasticity, lightness, corrosion resistance, and adaptable electromagnetic properties and ease of handling in the field applications.
The FRP epoxy bonding method is capable of increasing the strength and stiffness of RC beams, conditional upon several variables, such as: FRP type, number of layers, FRP properties, skill of workers, etc. [5, 6].
The increase depends on many factors such as longitudinal steel ratio, FRP ratio, concrete compressive strength, FRP mechanical properties and the level of damage.
The details of beam cross sectional properties are given in Table 1 and material properties are given in Table 2.

Bhattacharyya2 1School of Manufacturing Engineering, Universiti Malaysia Perlis, Pauh Putra Campus, 02300 Perlis, MALAYSIA 2Centre for Advanced Composites Materials (CACM), Department of Mechanical Engineering, The University of Auckland, Private Bag 92019, Auckland, NEW ZEALAND aazwaniskandar@unimap.edu.my , baazm007@aucklanduni.ac.nz Keywords: Machining; Milling; Chip formation; Fibre reinforced polymer composites.
Material properties, which include ductility, hardness, thermal conductivity, and microstructures, also highly govern the chip forming mechanisms.
As expected, machining conditions essentially affect the types of chip being formed, whereas, the fibre direction or orientation, also strongly influence the nature of chip, e.g. sizes and shapes.
Single fluted end mill tool Angle/ Direction of video camera N (a) (b) Fig. 1: (a) Side milling of the GFRP composites for filming of chip formation process, (b) modified end mill cutter The factors that are essential for a high quality image acquisition during the high-speed photography compose of (1) high speed video camera, and (2) lighting.
Fig. 5: Chip segmentation under the machining parameters of N = 500 RPM, fr = 0.32 mm/z and A = 90o Concluding Remarks The following conclusions can be made based on the results observed in the current study: · Insufficient ductility and heterogeneity properties of the GFRP composites have produced discontinuous and fracturing chip during machining operation

However, tubular fabric produced this way has obvious creases at two sides, the property of weft yarns at the crease is damaged and therefore the performance of the composite is influenced. 3D stitched fabrics are formed by overlaying flat fabrics to a required thickness, and then sewing them up into a whole.
However, the fibers are likely to be damaged and the fabrics be distorted when the needles penetrate the fabrics, this will decrease the composites’ property.
The helix angle of the weft yarns, which mainly affects density of weft, is determined by the velocity ratio of the weft insertion to the take-up speed.
It has the following advantages: 1) Due to the structure of this kind 3D tubular fabric is close to orthogonal structure, the fabric mechanical properties along the warp direction, weft direction and through-thickness direction are reliable. 2) Since the warp yarns are supplied from the warping creels which are not move, so their volume could be big enough, this means there is no need to change warp yarn cops frequently.
As a result, this method has the advantage of low workload, high speed, high efficiency and good continuity. 3) The diameter and fabric density of this kind 3D tubular fabric are mainly determined by the ends in warp, the size of the control ring and the speed ratio of let-off to take-up, each one of these factors is convenient to adjust, so the range of the fabric diameter could be very wide.

This is because the polymer processing conditions determine the development of crystals morphology, which influences the final properties of the material [3].
These two factors might contribute to the decrease in the crystallization rate of the PLA blends at high Tc.
The presence of EAC facilitated the formation of PLA nuclei but did not affect the spherulite growth rate.
Mohd Ishak, Thermal, mechanical, and morphological properties of polylactic acid toughened with an impact modifier, J.