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Experimental Investigation of Drilling Small Hole on Duplex Stainless Steel (SS 2205) Using EDM 电火花加工双相不锈钢(ss2205)小孔的试验研究
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/MME-2019-0014
{"title":"Experimental Investigation of Drilling Small Hole on Duplex Stainless Steel (SS 2205) Using EDM","authors":"","doi":"10.2478/MME-2019-0014","DOIUrl":"https://doi.org/10.2478/MME-2019-0014","url":null,"abstract":"Abstract This work investigates drilling of small holes of 3 mm in diameter on duplex stainless steel. Its machinability index is very low (0.66) when compared to other steels; hence, electrical discharge machining is used. The input parameters are current, spark gap, and dielectric pressure. Each input parameter is considered for three levels. Therefore, the total number of experiments is 3 × 3 × 3 = 27. To reduce the number of runs, Taguchi L9 orthogonal array is used, which have the advantage of maximum and minimum trial runs in its design. The output response is metal removal rate (MRR). To find the best operating parameter, the regression model generated using ANOVA is given as input for MATLAB genetic algorithm (GA). The experimental results indicated that models are significant. The test result indicated that the contribution of the current on the MRR is 42.42%, dielectric pressure is 35.36%, and spark gap is 1.93%. From GA, it is observed that among these three factors, lower value of current and dielectric pressure produced the maximum MRR. The SS 2205 has wide variety of applications, such as high pressure components and control valves, which have large number of components attached to it. Hence, performing micro holes on such high hardness alloy is useful.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47169964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Response of thermoelastic microbeam with double porosity structure due to pulsed laser heating 双孔结构热弹性微束在脉冲激光加热下的响应
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0011
Rajneesh Kumar, R. Vohra
{"title":"Response of thermoelastic microbeam with double porosity structure due to pulsed laser heating","authors":"Rajneesh Kumar, R. Vohra","doi":"10.2478/mme-2019-0011","DOIUrl":"https://doi.org/10.2478/mme-2019-0011","url":null,"abstract":"Abstract The present investigation is concerned with vibration phenomenon of a homogeneous, isotropic thermoelastic microbeam with double porosity (TDP) structure induced by pulsed laser heating, in the context of Lord– Shulman theory of thermoelasticity with one relaxation time. Laplace transform technique has been applied to obtain the expressions for lateral deflection, axial stress, axial displacement, volume fraction field, and temperature distribution. The resulting quantities are recovered in the physical domain by a numerical inversion technique. Variations of axial displacement, axial stress, lateral deflection, volume fraction field, and temperature distribution with axial distance are depicted graphically to show the effect of porosity and laser intensity parameter. Some particular cases are also deduced.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44868220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Numerical study of the thermal and hydraulic performances of heat sink made of wavy fins 波浪形翅片散热器热工水力性能的数值研究
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0021
R. Bouchenafa, H. Mohammed, R. Saim
{"title":"Numerical study of the thermal and hydraulic performances of heat sink made of wavy fins","authors":"R. Bouchenafa, H. Mohammed, R. Saim","doi":"10.2478/mme-2019-0021","DOIUrl":"https://doi.org/10.2478/mme-2019-0021","url":null,"abstract":"Abstract The aim of this paper is to numerically investigate the thermal and hydraulic performances of the two heat sinks made of wavy fins (WFHS). The governing equations fitted with boundary conditions were solved using the finite volume method, and the SIMPLE algorithm for the coupling velocity-pressure. The two-equation model k-ϵ was used to describe the turbulence phenomenon. The effects of wave numbers and the amplitude of wavy fins heat sink on the thermal and flow fields are studied and compared with the plate fin heat sink (PFHS). The results show that the use of wavy fins improves significantly the heat transfer rate, accompanied by a pressure drop penalty.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45111330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Experimental and Numerical Study of Bead Welding Behavior of HDPE Pipe Under Uniaxial Loading HDPE管在单轴载荷下堆焊行为的试验与数值研究
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0024
Azzeddine Belaziz, M. Mazari
{"title":"Experimental and Numerical Study of Bead Welding Behavior of HDPE Pipe Under Uniaxial Loading","authors":"Azzeddine Belaziz, M. Mazari","doi":"10.2478/mme-2019-0024","DOIUrl":"https://doi.org/10.2478/mme-2019-0024","url":null,"abstract":"Abstract The present paper is devoted to the experimental study of the mechanical behavior of high-density polyethylene structure subjected to traction and welded by means of butt-welding process. We were based ourselves on experimental tests which have been carried out to characterize the material studied, introducing the ductility or fragility of the bead welded section, and understood the effect of crosshead speeds on the mechanical behavior of the weld bead. The experimental results of the welded specimens are compared with those corresponding to the base material. In this study, two crosshead speeds of 10 and 50 mm/min were applied to make the comparison.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49289851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Theoretical Investigation on Growth Kinetics and Thermodynamic Properties of Pyridine-2-Carboxylic Acid Crystals 吡啶-2-羧酸晶体生长动力学及热力学性质的理论研究
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0004
N. Manopradha, S. Rama, S. Gowri, K. Kirubavathi, K. Selvaraju
{"title":"Theoretical Investigation on Growth Kinetics and Thermodynamic Properties of Pyridine-2-Carboxylic Acid Crystals","authors":"N. Manopradha, S. Rama, S. Gowri, K. Kirubavathi, K. Selvaraju","doi":"10.2478/mme-2019-0004","DOIUrl":"https://doi.org/10.2478/mme-2019-0004","url":null,"abstract":"Abstract This work illustrates the significance of kinetic parameters of nucleation and thermal decomposition for Pyridine-2-carboxylic acid crystals. In the interest of maximizing the growth condition for the production of single crystals, nucleation parameters such as interfacial energy (σ), volume free energy (ΔGv), critical energy barrier for nucleation (ΔG*), radius of the critical nucleus (r*) and nucleation rate (J) were determined from the classical nucleation theory of solubility-enthalpy relation. The optimized geometry of the compound was computed from the DFT-B3LYP gradient calculations employing 6-31G(d,p) basis set and its vibrational frequencies were evaluated. Based on the vibrational analysis, the thermodynamic parameters were obtained and the correlative equations between these thermodynamic properties and variation in temperatures were also reported.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49531830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Experimental study on mechanical behavior of natural hybrid composites filled with ground nut shell ash 花生壳灰填充天然杂化复合材料力学性能试验研究
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0029
V. Jagadeesh, K. Venkatasubbaiah, A. Lakshumu Naidu
{"title":"Experimental study on mechanical behavior of natural hybrid composites filled with ground nut shell ash","authors":"V. Jagadeesh, K. Venkatasubbaiah, A. Lakshumu Naidu","doi":"10.2478/mme-2019-0029","DOIUrl":"https://doi.org/10.2478/mme-2019-0029","url":null,"abstract":"Abstract Nowadays, natural fiber reinforced polymer composites are widely used because of their advantageous properties like minimum density, maximum specific strength, low cost and easy availability. Manufacturing of natural fiber composite is easy as compared to the conventional methods. In the present scenario, due to an increasing interest in environmental consciousness with greenhouse effect, various industries have initiated the use of eco-friendly materials and are replacing hazardous materials with such eco-friendly materials. The present work aims to determine the tensile strength of okra and jute fibers reinforced in Epoxy LY-556 and XIN-100IN Resins. Okra fibers are developed from the stem of the plant of the Malvaceae family. Their use as reinforcement in polymer composites requires the basic knowledge of their mechanical properties. Jute fibers are developed from the best jute plants. The conclusions are based on their mechanical properties and behavior.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41819241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Sensitivity Analysis of Internally Reinforced Thin-Walled Hollow-Box Beams Subjected to Uncoupled Bending and Torsion 内配筋薄壁空心箱梁在非耦合弯扭作用下的灵敏度分析
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0001
H. M. Silva, J. Wojewoda
{"title":"Sensitivity Analysis of Internally Reinforced Thin-Walled Hollow-Box Beams Subjected to Uncoupled Bending and Torsion","authors":"H. M. Silva, J. Wojewoda","doi":"10.2478/mme-2019-0001","DOIUrl":"https://doi.org/10.2478/mme-2019-0001","url":null,"abstract":"Abstract In this work, novel types of internally reinforced hollow-box beams were subjected to bending loading and studied using the finite element analysis software ANSYS. A parameterization of 3 geometric variables was performed, and deflection and effective deflection results were collected from 2 points at the model. The sensitivity analysis results are then discussed, with the aim of concluding if the selected design variables are adequate for optimization purposes.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43293703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tribological Behavior of AA7050-ZrSiO4 Composites Synthesized by Stir Casting Technique 搅拌铸造法制备AA7050-ZrSiO4复合材料的摩擦学性能
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0026
S. Sakthivelu, M. Meignanamoorthy, M. Ravichandran, P. P. Sethusundaram
{"title":"Tribological Behavior of AA7050-ZrSiO4 Composites Synthesized by Stir Casting Technique","authors":"S. Sakthivelu, M. Meignanamoorthy, M. Ravichandran, P. P. Sethusundaram","doi":"10.2478/mme-2019-0026","DOIUrl":"https://doi.org/10.2478/mme-2019-0026","url":null,"abstract":"Abstract This research made an attempt to synthesize aluminum metal matrix composites through stir casting technique. The matrix material chosen in this study was AA7050 and the reinforcement material was ZrSiO4. The composites AA7050, AA7050-10%ZrSiO4, and AA7050-15%ZrSiO4 were used. The wear behavior of the aluminum matrix composites was investigated by using pin-on-disc tribometer. The advanced material has substantial development in tribological behavior when the reinforcement percentage is increased. From the experimental results, it was confirmed that sliding distance of 1200 m, applied load of 3 N and sliding speed of 2 m/s result in minimum wear loss and coefficient of friction, while adding 10%ZrSiO4 to the AA7050.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45368184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Experimental and Numerical Investigations of Pipeline with Resonator 带谐振腔管道的实验与数值研究
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0003
T. Pałczyński, K. Kantyka
{"title":"Experimental and Numerical Investigations of Pipeline with Resonator","authors":"T. Pałczyński, K. Kantyka","doi":"10.2478/mme-2019-0003","DOIUrl":"https://doi.org/10.2478/mme-2019-0003","url":null,"abstract":"Abstract This article presents the current state of the art regarding the use resonators in straight pipes. There is considerable need to control and reduce pressure pulsation in pipelines supplied with pulsating flows. The use of a Helmholz resonator introduces an additional degree of freedom to the analysed dynamic system. Building on previous experimental investigations by the authors, which identified the nonlinear properties of straight pipes supplied with pulsating flows, this study describes an experimental test rig, measurement methods and mechanical analogies for one (1DOF) and two (2DOF) degrees of freedom. The results are presented in the form of a 3D map of amplitude-frequency characteristics, as a function of the resonator volume determined by piston height. The dynamic properties of the described system are presented as amplitude-phase characteristics, based on a comparison of the numerical and experimental results.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41559312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Numerical study of cracking a medium elastic viscoplastique of polyacetal 聚缩醛介质弹性粘塑性开裂的数值研究
Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI: 10.2478/mme-2019-0017
S. A. Reffas, Mohamed Benguidiab, O. Šikula, Houari Adjlout, Habib Lebbal
{"title":"Numerical study of cracking a medium elastic viscoplastique of polyacetal","authors":"S. A. Reffas, Mohamed Benguidiab, O. Šikula, Houari Adjlout, Habib Lebbal","doi":"10.2478/mme-2019-0017","DOIUrl":"https://doi.org/10.2478/mme-2019-0017","url":null,"abstract":"Abstract The objective of this work is the analysis of the fracture behavior of a SENB cylinder with a defect where stress triaxiality is more severe. Numerical simulations are carried out in a 2D mode, to overcome a disadvantageous hypothesis plane strain or plane stress. The mesh sensitivity studies were also undertaken but are not presented here. Indeed, only the results for the most relevant mesh are the subject of the discussion.","PeriodicalId":53557,"journal":{"name":"Mechanics and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42628760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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