Experimental studies of the cutting force and surface morphology of explosively clad Ti–steel plates

Measurement ◽  
2016 ◽  
Vol 78 ◽  
pp. 129-137 ◽  
Author(s):  
P. Nieslony ◽  
P. Cichosz ◽  
G.M. Krolczyk ◽  
S. Legutko ◽  
D. Smyczek ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Cutting Force ◽  
Experimental Studies ◽  
Steel Plates

Calculation And Experimental Substantiation Of Optimal Design Of The Welded Joint Of Plates On Соver Plates

2020 ◽  
pp. 17-24
Keyword(s):  
Welded Joint ◽  
Experimental Studies ◽  
Engineering Calculation ◽  
Tensile Tests ◽  
Physical Nonlinearity ◽  
Steel Plates ◽  
Optimal Parameters ◽  
Actual Problem ◽  
Numerical Research ◽  
Cover Plates

The article is devoted to the actual problem of assigning optimal parameters for connecting steel plates on cover plates with angular welds that are widely used in construction practice. The article presents the results of a comprehensive study of operation of a welded assembly of the plates connection on cover plates. An algorithm is proposed for determining the optimal parameters of a welded joint with fillet welds on the cover plates, which makes it possible to obtain a strength balanced connection. The results of full-scale tensile tests of models were presented. These results confirmed the correctness of the assumed design assumptions, and made it possible to obtain a form of destruction, not characteristic and not described in the normative literature, expressed by cutting the main elements along the length of the overlap in the joint. The possibility of such a form of destruction was confirmed by the results of numerical research in a nonlinear formulation. The optimal parameters of the nodal welded joint determined by engineering calculation are confirmed by experimental studies, as well as by the results of numerical experiments on models of calculation schemes, taking into account the physical nonlinearity of the material operation. The obtained dependence for determining the bearing capacity of the joint by the cut-off mechanism and the expression for limiting the overlap length of the cover plates will make it possible to predict the nature of the fracture and design equally strong joints.

Experimental study and multi-objective optimization of process parameters during turning of 100Cr6 using C-type advanced coated tools

2021 ◽  
pp. 095440622110431
Author(s):  
LR Bhandarkar ◽  
PP Mohanty ◽  
SK Sarangi
Keyword(s):  
Cutting Force ◽  
Distance Measure ◽  
Experimental Studies ◽  
Cutting Speed ◽  
Bearing Steel ◽  
Depth Of Cut ◽  
X Ray ◽  
Coated Tools ◽  
Reduction Coefficient ◽  
Machining Parameter

The drive of this research is to examine the machinability of 100Cr6 bearing steel using advanced C-type cutting tools. Experimental studies investigated the effects of machining variables on the surface quality, chip reduction coefficient and cutting force. Seven advanced coated tools were checked for characterization by micro hardness (VHN), adhesion quality, X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDXS). The experimental trials were planned by Taguchi’s L18 orthogonal array using a mixed-level design. Two numerical machining variables feed rate and cutting speed, and one categorical machining variable tool type was taken into consideration while a constant depth of cut was kept for all trails. A combined Taguchi-Satisfaction function distance measure approach was implemented for multi-response optimization. The most promising machining parameter setting for minimization of surface roughness, cutting force, and chip reduction coefficient was identified. The most important process parameter was found to be tool-type. Ceramics tools are found to be best trailed by WC coated tools under most of the conditions. Lower tool wear was observed in the CBN tool as compared to others.

Dry Machining of Inconel 825 Superalloys

2021 ◽  
Vol 11 (4) ◽  
pp. 26-39
Author(s):  
Kshitij Pandey ◽  
Saurav Datta
Keyword(s):  
Tool Wear ◽  
Surface Morphology ◽  
Cutting Force ◽  
Carbide Tool ◽  
Dry Machining ◽  
Machining Performance ◽  
Force Magnitude ◽  
Wear Pattern ◽  
Inconel 825

The present work investigates application feasibility of PVD TiN/TiCN/TiN coated cermet and CVD Al2O3/TiCN coated SiAlON for dry machining of Inconel 825 superalloy. Machining performance is interpreted through cutting force magnitude, tool-tip temperature, and mechanisms of tool wear. Results are compared to that of CVD multi-layer TiN/TiCN/Al2O3/TiN coated WC-Co tool. It is evidenced that SiAlON tool generates lower cutting force but experiences higher tool-tip temperature than other two counterparts. Apart from abrasion and adhesion, carbide tool witnesses coating peeling and ploughing. In contrast, SiAlON tool suffers from inexorable chipping and notching. Wear pattern of cermet tool seems less severe than carbide and SiAlON. Chip's underside surface morphology appears relatively better in case of cermet tool.

Design of Laterally Loaded Plating—Uniform Pressure Loads

1981 ◽  
Vol 25 (02) ◽  
pp. 77-89
Author(s):  
Owen F. Hughes
Keyword(s):  
High Speed ◽  
Lateral Pressure ◽  
Experimental Studies ◽  
Steel Plates ◽  
Subsequent Paper ◽  
Rigid Plastic ◽  
Welded Steel ◽  
High Speed Impact ◽  
Laterally Loaded ◽  
Good Agreement

An explicit formula is presented for the design of welded steel plates subjected to uniform lateral pressure, on the basis of a designer-specified level of acceptable permanent set, including that due to welding. The formula is derived from a combination of theoretical and experimental studies and shows good agreement with experimental results. For the convenience of designers the formula is also given in the form of design curves. The paper also delineates the areas of application of this and other formulas for laterally loaded plating. In brief, the paper shows that for static and quasistatic loads the formula derived herein is more accurate than formulas based on either the pseudo-elastic or the rigid-plastic approach. As the load becomes more dynamic the rigid-plastic approach becomes more appropriate, and for high-speed impact loads the rigid-plastic approach is best. For quasistatic loads, such as slamming, the formula presented herein is somewhat conservative while the rigid-plastic formulas are somewhat optimistic. A similar formula for concentrated loads (such as wheel loads) will be presented in a subsequent paper.

scholarly journals The mathematical models for cutting force calculation during structural and corrosion-resistant steels` parts processing

2019 ◽  
Vol 298 ◽  
pp. 00099
Author(s):  
Alexey A. Zhdanov ◽  
Oleg A. Kursin ◽  
Pham Xuan Bach
Keyword(s):  
Mathematical Models ◽  
Cutting Force ◽  
Experimental Studies ◽  
Additional Parameter ◽  
Corrosion Resistant ◽  
Cutting Force Components ◽  
Force Components ◽  
Quantitative Indicators ◽  
Force Calculation ◽  
Thermo Physical Properties

The paper shows that conventional mathematical models for calculating the cutting force components during the turning process, represented in reference guides on engineering, give drastic errors reaching 100 percent or more for various tool-workpiece couples. These errors interfere with applying reference values of the cutting force for any further calculations, equipment selection, workpiece positioning scheme, workpiece deformation value due to the elastic of the technological system elements during processing and etc., because of the insufficient reliability of the results of such calculations. The paper proposes mathematical models obtained as a result of experimental studies, which allow for increasing the accuracy of the calculation of the components of the cutting force by introducing an additional parameter – i.e., the value of thermo EMF of the test running into the calculation formulas. This approach enables to reduce the error in the calculation of the components of the cutting force up to ± 15%. In addition, the need for the development of specific mathematical models for various groups of materials machined is shown, which is due to the peculiarities of contact processes in the machining of various groups of steels, as well as to qualitative and quantitative indicators of the thermo-physical properties of the materials of tool-workpiece contact couples.

Seismic Behaviour on Composite Strengthening for Existing Reinforced Concrete Short Columns

2011 ◽  
Vol 194-196 ◽  
pp. 1986-1989
Author(s):  
Gen Tian Zhao
Keyword(s):  
Shear Failure ◽  
Experimental Studies ◽  
Steel Plates ◽  
Shear Mode ◽  
Seismic Behaviour ◽  
Shear Strengthening ◽  
Moment Capacity ◽  
Short Column ◽  
Short Columns ◽  
Strengthening Method

In order to develop an effective seismic shear strengthening method for improving the earthquake behavior of existing R/C short columns, experimental studies are conducted by using four beam-column sub assemblage specimens with a short column. Three short columns of these specimens are strengthening by steel plates and concrete, while other one is without any steel plate strengthening. All the specimens are tested under a constant gravity load and alternately repeated lateral forces. Test results demonstrate that, if the short column is strengthened by a welded square tube and concrete, then brittle shear failure does not occur and the column can develop its ultimate flexural moment capacity. It is also shown by tests that the proposed strengthening method using steel plates and concrete is applicable to repair and rehabilitate the damaged short columns failed in the brittle shear mode.

Implant Surface Finishing Influence on Tissue-Implant Anchoring

2014 ◽  
Vol 216 ◽  
pp. 39-44
Author(s):  
Florin Miculescu ◽  
Lucian Toma Ciocan ◽  
Marian Miculescu ◽  
Daniela Meghea ◽  
Marin Bane ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Experimental Studies ◽  
Tissue Response ◽  
Surface Finishing ◽  
Implant Surface ◽  
Metal Implants ◽  
Metallic Implants

The implant surface morphology and microstructure significantly affect cells and tissue quantity formed at the interface. Therefore, the biocompatibility of an implant is just one of many parameters that influence tissue response to metallic implants. In order to understand the importance of the surface morphology and microscopic structures, we must retain first the main problem that limit the application and operation of metal implants - the lack of implant viable anchoring within the tissue. On this basis, experimental studies were carried out on implants having different microstructures and macrostructures that have been used in order to achieve a better long-term anchoring and stability of the implant support.

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