Design and Development of a Numerical Model and Study on Kinematic Analysis of a Circular Diamond Saw Blade for Ceramics

Diamond tools are currently being used by an increasing number of architects, miners and construction engineers because they are faster and easier to use than older, more traditional instruments like sledge hammers and pneumatic and hydraulic jacks. Bridge and highway surfaces are cut with diamond asphalt and concrete cutting machines to provide for quick, clean, and easy section removal and replacement. The entire cost is reduced since diamond tools take less time and manpower The experiment is carried out to validate the performance of diamond saw blades by taking into consideration characteristics such as normal force, tangential force, cutting speed, cut depth, and peripheral velocity. In present exploration work we are introductory phase of plan conclusion of a jewel device cutting edge with various segmental like 8,12,16,20 corn meal by utilizing Solid works programming we are planning the apparatus cutting edge after that we are imported in Ansys Software for Analysis reason. Computing the necessary qualities for examination and estimations of earthenware tiles likewise are some other stone molecule. Another power model of cutting is presented and inferred numerical demonstrating for chip thickness. Identical chip thickness to coarseness space proportion is gotten from the new power model another outspread opening like profile is presented. Fragmented sort jewel saw sharp edge with the measurement of 400 mm and different portion, for example, 8, 12, 16 and 20 are planned in Solid works effectively. An examination study between existing roundabout outspread space and cone like opening is done to decide deformity, stress dispersion, vibration and temperature conveyance.

PENGARUH VARIASI PUTARAN SPINDEL TERHADAP GAYA POTONG PADA PROSES PEMESINAN

The turning process is one of the most important machining processes in the industrial world. In this process, a change in shape is carried out by removing some of the material in the form of industrial machine tools. Inappropriate selection of the shape/type of tool, workpiece material, and cutting conditions will affect the characteristics of the tool. In the study, it was found that the rotational speed was 90,110,155,190 rpm, with a depth of cut of 0.3 mm at a feed rate of 0.023 mm / rev against different specimens, namely Dural Aluminum (Al 2024), Pure Aluminum (Al 1100) using a chisel insert type DCGT 070204K. -10 and DCMT 070202 M-20 with conventional lathe type Emco Maximat V - 13 IP 54. Data retrieval uses three sensors, namely a load cell sensor for cutting force, and the photoelectric counter module for rotation (rpm). The results showed that each specimen tested had a different value in each test experiment, such as testing on Pure Aluminum (Al 1100) specimens with a cut depth of 0.3 mm and rotation variations of 90, 110, 155, and 190. rpm can be seen in DCMT tool that the cutting force is greater than the DCGT tool. The cutting force produced on the DCMT tool blade is 9.91 N with a rotation of 110 rpm and at 190 rpm the DCMT tool gets a force of 6.83 N. It can be concluded that at low rotation the cutting force that occurs will be greater because of the vibrations that occur bigger.

Quantitative determination of cut efficiency during soft tissue surgery using diode lasers in the wavelength range between 400 and 1500 nm

Within the scope of this ex vivo study, the cut efficiency was investigated with eight diode laser wavelengths in the range from 400 to 1500 nm. Incisions on porcine gingiva samples were generated in CW-mode at a power range of 0.5–4 W using a bare fiber (∅ = 320 μm) in contact and non-contact mode at a cut speed of 2 mm/s. Cut depths, cut widths, and thermal damages were recorded based on histological sections and were evaluated via measurement masks. Moreover, with respect to the controllability of a therapeutic measure, an efficiency factor was defined. At powers above 2 W, for 445 nm, the maximum cut depth was 820 μm and 344 μm for 810 nm, respectively. At all wavelength and power ranges, the cut width averaged 125 μm. At minimum output power (0.5 W), the spatial expansion of the thermal damage in the tissue surface layer corresponds in the blue/green wavelength range from the very beginning of the laser impact to the fiber core diameter. It could be shown that increases in the diode laser power output do not correlate to the same extent with the incision depth nor with thermal damage to tissue.

Multi-objective optimization of machining parameters during milling of carbon-fiber-reinforced polyetheretherketone composites using grey relational analysis

Short carbon-fiber-reinforced composites, especially short carbon-fiber-reinforced polyetheretherketone composites (CF-PEEK), are used extensively in the engineering field because of their superior properties. However, their surface quality and material removal rate need to be optimized to satisfy design and processing requirements. This work focused on a multi-objective optimization to minimize the surface roughness and maximize the material removal rate during machining by grey relational analysis with an analysis-of-variance (ANOVA) and response surface methodology before a multi-objective mathematical model was established. The statistical significance of the predicted model was examined by using an ANOVA to obtain the optimal machining parameters (spindle speed, feed rate, cut depth). The optimal combination of cutting parameters was a spindle speed of 2600 rpm, a feed rate of 720 mm/min, and a cut depth of 1.8 mm.

Comparison of strength and depth cut with scalpel on porcine gingival tissues

The composition of the gums confers some physical characteristics that make it resistant to mechanical stimulation. The objective of the study was to compare the difference of the utilized forces when performing cuts in the anterior and posterior sections of porcine gingival tissue, measuring the depth of the tissue. A comparative descriptive study was performed with a non-probability convenience sampling, sectioned pig mandibles were used. The experimental trials were performed with an EZ-S SHIMADZU texture analyzer. All of the samples were submitted to a vertical shear force, thus identified the force level used to perform the incision and its depth. the necessary force to perform a cut in porcine gingival tissue was evaluated, comparing the posterior section (39.3571 Newton and 2.160 mm) and with the anterior ( 37.8424 newton and 1.747 mm), just as the depth of said cut, showing a statistical difference on the depth, (p=0.022 p< 0.59); regarding the force, no statistically significant difference was found. In the analyzed samples where the shear force in the posterior and anterior section were compared, no difference was found in both groups; as for the cut depth, this was greater in the posterior section than in the anterior.

Pengaruh Parameter Pemotongan Terhadap Kekasaran Permukaan Blok Head Pada Proses Frais

Teknologi Mesin Frais sudah dikenal dan biasa digunakan dunia industri besar maupun industri kecil, mesin ini biasaya digunakan untuk meratakan permukaan benda atau melubangi benda, dengan penyayatan mengunakan pisau frais atau mata bor. Blok head sepeda motor biasanya jika digunakan bertahun lamanya akan mengalami deformasi atau pembengkokan pada permukaan, sehingga kompresi pada sepeda motor akan menjadi bocor. Untuk memperbaikinya salah satu mesin yang dapat digunakan adalah mesin frais, diratakan kembali permukaan blok head yang bengkok. Untuk proses pengefraisan disini variasi yang digunakan adalah putaran spindle 300 rpm, dengan gerak makan 10 mm/menit, 15 mm/menit, 20 mm/menit dan kedalaman potong 0,1 mm, 0,2 mm, 0,3 mm. Hasil dari pengujian menunjukan bahwa tingkat kekasaran hasil pengfraisan yang paling kecil ada pada gerak makan 10 mm/menit dan kedalam potong 0,1 mm hasil yang di dapat 1.098 ?m. Milling Machine Technology is well known and commonly used in the world of large and small industries, this machine is usually used to flatten the surface of objects or pierce objects, by cutting using a milling knife or drill bit. Motorcycle head block usually if used for many years will experience deformation or bending on the surface, so that the compression on the motorcycle will leak. To fix it, one of the machines that can be used is a milling machine, flattened back the curved head block surface. For the process of refining here variation used is 300 rpm spindle rotation, with feeding motion of 10 mm / min, 15 mm / min, 20 mm / min and a cut depth of 0.1 mm, 0.2 mm, 0,3 mm. The results of the test showed that the smallest level of roughness of the results of refining was at a feed motion of 10 mm / min and into a 0.1 mm cut the results were 1.098 ?m.

Parametric Analysis on the Circular CFST Column and RBS Steel Beam Joints

This research analyzes the results of parametric studies of concrete-filled steel tubular (CFST) columns to the reduced beam section (RBS) beam joint with through diaphragm, using ANSYS. Several indices that are able to characterize the cyclic behavior of the composite joints are investigated, including the stiffness degradation, strength deterioration, stress distribution, and energy dissipation capacity. Four main model parameters, including the distance from the diaphragm edge to the cut start, the cut length, the cut depth, and inner diameter of through diaphragm, are analyzed via comparative studies to investigate their impacts on seismic properties of the joint. Finally, the orthogonal experiment is conducted to study the effects of these parameters on the strength and energy dissipation, the results of which are capable of achieving optimal seismic behavior of the joints.

The polymeric materials turning after workpiece processing with surface-active substances

The results of experimental investigations of surface quality after the lathe machining of polymeric materials subjected to preliminary treatment with surface-active substances are presented. The new combined method for polymer parts was developed. This method is based on directed change in the polymer properties by preliminary chemical treatment of the surface layer so as to reduce its resistance in the cutting zone. It has been demonstrated in experiments that the preliminary treatment of workpiece with surfactants ensures an improvement in quality of the surface machined by turning. This is indicated by a reduction in the roughness parameters by a factor of 2–4.5, and the minimum roughness is achieved at a cut depth equal to 1.0–1.15 the surfactant penetration depth into the material

Experiment and simulation study on relationship between diameter of high-pressure water abrasive jet nozzle and cutting capacity

High pressure water abrasive jet nozzle is key part of the particles acceleration. The diameter of nozzle has important effect for jet fluid. Through experiment and simulation explore the relationship between nozzle diameter and jet fluid cutting capacity. The result indicate: ①the cut depth and broad reduced in linearly relationship with the diameter of the jet nozzle. ②In same pressure, decrease the nozzle diameter will reduce the cutting ratio energy; ③The acceleration and attenuation of the nozzle axial flow in different diameters are basically consistent, The smaller nozzle diameter, The flow acceleration will slower, the attenuation will faster, the is velocity core segment will shorter and the cutting ability will lower;Consider from energy consumption, cutting efficiency and other factors, for common material cutting the nozzle preferred diameter is: 0.6~1.0mm, it’s unfavourable to select the 0.2mm diameter