· Rabiei FA, Rahimi AR, Hadad MJ. Performance improvement of eco-friendly MQL technique by using hybrid nanofluid and ultrasonic-assisted grinding. Int J Adv Manufacturing Tech 2017; 93(1): 1001–1015.
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DOI: 10.1016/j.triboint.2022.107651 Corpus ID: 249057105 Optimization of hydrodynamic properties of structured grinding wheels based on combinatorial bionics @article{Yu2022OptimizationOH, title={Optimization of hydrodynamic properties of structured grinding
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by the geometry of the structured wheel and kinematics of the grinding operation. The current strategy for machining the microstructured surface starts by designing the desired geometry of microstructures. Therefore, after calculating the values of the ground width (lw) and the bearing width (lb),
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· The conditioning of grinding tools is one of the most important factors for achieving an optimal grinding process. It influences the grinding forces and temperatures and, therefore, the achievable material removal rate, dimensional accuracy and the surface integrity of the workpiece. Furthermore, the roundness, profile accuracy and the wear of
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:Payam Kavousi GhahfarokhiPublish Year:2017 · This paper presents a new Cartesian gridding technique to facilitate local high-resolution simula tions and hence optimize the computational cost. On a coarse
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· 3.1 Precision Grinding of Microlens Array. In this study, two types of new designs are proposed as the surface of the glass substrate is plane and macro-freeform curved, while well-determined microlens array is fabricated on the surfaces. Here, micro-grinding is employed to reach the micron-scale forming accuracy.
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· Precision profile grinding with textured diamond wheels is an alternative for generating microstructures on the ceramic mold for glass molding. In this work, a novel texturing strategy employing abrasive waterjet for superabrasive grinding wheels was proposed to generate controllable microtexture profile on the diamond wheel surface
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ing structuredlocallyorthogonal meshes. Rüger andHale(2006) use anon-structured gridding technique based on tesselation to break subsurface velocity models into logical units. An important set of structured meshing techniques used in other scientic elds are 45
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· As an effective machining method for hard and brittle materials, ultrasonic-assisted grinding (UAG) was employed to manufacture microstructures on SiC in this study. The kinematic characteristics of abrasive grains during machining were analyzed first. After that, the influence of machining parameters on the shape accuracy and surface quality
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· It is well-known that the performance of a diamond grinding wheel relies on the active cutting edges of abrasive grains on the wheel surface formed by a proper wheel dressing technique using an
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· However, CBEGTs with crystal structure generated an average MMR and surface roughness (Ra) range of 0.08 g/s-0.10 g/s and 1.53 μm-1.96 μm, respectively. This demonstrates that CBEGTs with crystal structure effectively reduces Ra while maintaining
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· The ability to reshape the grinding wheels with special patterns to produce advanced structured surfaces with several geometries is studied and a simulation method to express the patterned wheels and the structured surface at different working conditions is developed. In this work, the ability to reshape the grinding wheels with patterns of
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In this article, an efficient sub‐gridding finite‐difference time‐domain is developed for the simulation of multiscaled electromagnetic problems. The proposed technique is based on
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· Fig. 1 a and b show a schematic representation of the proposed grinding wheel and the position of the abrasive particles defined on the surface of a hypothetical grinding wheel. According to Fig. 1 b, the two values of ∆x and ∆y represent the distance between the two abrasive particles in the circumferential and axial directions of the
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1. Requires 4 3D Arrays (FAVOR™) 2. Easy Mesh Generation 3. Simple Numerical Algorithm. This uses a large amount of stored memory and increases memory retrieval times. Although memory is becoming inexpensive, the amount of memory to be retrieved is becoming an important consideration in parallel computing.
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· The laser ablation technique is also a promising technology that removes local material by high-frequency pulsed laser injection and develops a structured surface [12,13]. However, the melting and remelting of the processed materials may lead to residual stress and microcracks, which induce fatigue and fracture of the formed structure [14,15].
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Compatible sub-gridding technique and domain decomposition method are employed to analyze a special structure of electromagnetic field problems. Compatible sub-gridding technique can improve the numerical solution precision distinctly. Meanwhile, it can reduce a lot of unknowns enormously. Furthermore, combining this compatible sub-gridding
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· A micro-pyramid structured thin film with a broad-band infrared antireflection property is designed and fabricated by using the single-point diamond turning (SPDT) technique and combined with nano
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:Environmental Hydrodynamic ModelSaltwater IntrusionPublish Year:2019 · The possibility of using the new processing technique of vacuum evaporative pattern casting (V-EPC) process to fabricate the Al-Si based bonded diamond grinding wheels was explored in this paper.
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· In 1989, Stepien [47] introduced a technique to produce a structured surface through grinding process by means of dressed grinding wheel. This method had high sensitivity to dressing conditions, band material, type and size of abrasive particles.
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Notation for Rectangular Grids. In a rectangular (2D) grid, the elements are typically labeled by integers i and j in the x and y coordinate directions, respectively. An element (i,j) has principal neighbors (i-1,j), (i+1,j), (i,j-1)
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For grinding wheels SA90JV with aluminum oxide abrasives and vitri-fied bond, a laser fluence with pulse energy more than 10 μJ will trigger the laser ablation with picosecond pulsed laser of. 20-μm spot diameter. A structured grinding wheel with a diameter of 320 mm and a groove factor of 65% with 1 mm x 1 mm U-shaped slots was successfully
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· This study investigates the effects of the structured wheels’ geometrical parameters on the geometries of structured surfaces machined by grinding operations. First, the geometrical parameters of the structured wheels were determined. The resultant geometrical parameters of structured surfaces were defined and related to the designed
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If you can answer yes to both of those questions, you've got the gridding process down pat! Now, back to the 5" x 7" grid above. I find that it's sometimes easier to keep track of where I am amongst all those little squares by marking them numerically and alphabetically along the edges of the paper and canvas.
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· Structured flow-based gridding procedures have been developed by a variety of investigators, both within Cartesian and curvilinear grid frameworks. A non-uniform coarsening technique that selectively removes fine scale grid lines in a manner that retains important high flow regions was presented in [1].
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· The honeycomb structure was analyzed using field emission scanning electron microscope (FESEM, S-4800, Japan). Combustion characteristics of green bodies were analyzed using a thermogravimetric and differential scanning calorimeter (TG-DSC, STA-449C) at a scan rate of 10 °C/min. Bulk density ( ρ b ) and apparent porosity (P a )
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· DOI: 10.1016/J.JMATPROTEC.2013.11.015 Corpus ID: 137386115 Laser-structured grinding tools – Generation of prototype patterns and performance evaluation @article{Walter2014LaserstructuredGT, title={Laser-structured grinding tools – Generation of prototype patterns and performance evaluation}, author={Christian Walter and Tim
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· Nesting Your Way to Mesh Multi-Scale CFD Simulation! Figure 1: GridPro Nesting structure around a Wind Turbine Blade. 1161 words/ About 6 mins. Every geometry is unique, posing a new challenge for meshing and thereby pushing the limits of the grid generator. At times the requirements are so unique that they lay the foundation for a new
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In the present work, a novel technique is introduced to enhance thermal conductivity of the surface by grinding process with predefined location of diamond abrasive particles on wheel surface. Grinding process with modified wheel led to an increase the bubble nucleation site formation and departure frequency in surface channels. For a more detailed study,
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