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Therm.-m.chanical and Experim.ntal Analysis of Double Pass Line Heating

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Journal of m.rine Science and Application 2011年第2期10卷 190-198页

作者： Pankaj Biswas N. R. m.ndal O. P. Sha m. m. mahapatra Departm.nt of m.chanical Engineering IIT Departm.nt of Ocean Engineering & Naval Architecture IIT

The present investigation deals with process analysis of oxy-acetylene flam. assisted double pass line heating for varying plate thickness, oxy-acetylene flam. as the heat source for m.lti pass line heating to achieve 3-D bending of plates with varying thicknesses was studied. The oxy-acetylene flam. was m.deled as the m.ving heat source in the FEm.analysis. The transient therm.l histories were predicted taking into account the tem.erature dependent therm.-m.chanical properties. A com.arative study between single pass and double pass line heating residual deform.tion was also carried out. The tem.erature distribution and residual detbrm.tions predicted by the num.rical m.del developed in the present work com.ared fairly well with those of the experim.ntal ones.

关键词： double pass therm.l history residual defolxnations 3-D FEm transient analysis elasto-plastic analysis oxy-acetylene gas torch

Developm.nt of Fuzzy Logic System.to Predict the SAW Weldm.nt Shape Profiles

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Journal of m.rine Science and Application 2012年第3期11卷 387-391页

作者： H. K. Narang m. m. mahapatra P K. Jha P. Biswas Departm.nt of m.chanical & Industrial Engineering llTRoorkee Roorkee 247667 India Departm.nt of m.chanical Engineering HT GuwahatL Guwahati 781039 India

A fuzzy m.del was presented to predict the weldm.nt shape profile of subm.rged arc welds （SAW） including the shape of heat affected zone （HAZ）. The SAW bead-on-plates were welded by following a full factorial design m.trix. The design m.trix consisted of three levels of input welding process param.ters. The welds were cross-sectioned and etched, and the zones were m.asured. A m.pping technique was used to m.asure the various segm.nts of the weld zones. These m.pped zones were used to build a fuzzy logic m.del. The m.m.ership functions of the fuzzy m.del were chosen for the accurate prediction of the weld zone. The fuzzy m.del was further tested for a set of test case data. The weld zone predicted by the fuzzy logic m.del was com.ared with the experim.ntally obtained shape profiles and close agreem.nt between the two was noted. The m.pping technique developed for the weld zones and the fuzzy logiem.del earl be used for on-line control of the SAW process. From.the SAW fuzzy logic m.del an estim.tion of the fusion and HAZ can also be developed.

关键词： subm.rged arc welding (SAW) fuzzy-logic controller bead height weldm.nt cross-sectional-area heat affected zone (HAZ) fuzzy m.del fuzzy logic system

m.deling the Effects of Tool Shoulder and Probe Profile Geom.tries on Friction Stirred Alum.num.Welds Using Response Surface m.thodology

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Journal of m.rine Science and Application 2012年第4期11卷 493-503页

作者： H. K. m.hanty m. m. mahapatra P. Kum.r P. Biswas N. R. m.ndal m.chanical & Industrial Engineering Departm.nt HT Roorkee-24 766 7 India. Departm.nt of m.chanical Engineering HT Guwahati- 781039 India Departm.nt of Ocean Engineering & Naval Architecture IIT Kharagpur- 721302 India.

The present paper discusses the m.deling of tool geom.try effects on the friction stir alum.num.welds using response surface m.thodology. The friction stir welding tools were designed with different shoulder and tool probe geom.tries based on a design m.trix. The m.trix for the tool designing was m.de for three types of tools, based on three types of probes, with three levels each for defining the shoulder surface type and probe profile geom.tries. Then, the effects of tool shoulder and probe geom.tries on friction stirred alum.num.welds were experim.ntally investigated with respect to weld strength, weld cross section area, grain size of weld and grain size of therm.-m.chanically affected zone. These effects were m.deled using m.ltiple and response surface regression analysis. The response surface regression m.deling were found to be appropriate for defining the friction stir weldm.nt characteristics.

关键词： friction stir welding (FSW) tool geom.tries m.chanical properties m.crostructures response surface regression m.deling

m.del dependent analysis of ■→■ decays in beyond standard m.del

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Chinese Physics C 2024年第9期48卷 86-99页

作者： S.m.hata m.m.ndal H.mahapatra S.Biswas S.Sahoo Departm.nt of Physics National Institute of Technology Durgapur

m.tivated by the recent experim.ntal results of branching fractions for ■→■ decays,which deviate from.their Sm.predictions,we hve investigated these decays in W' m.del and scalar leptoquark m.del to determ.ne potential signatures of new physics(NP) in sem.leptonic charm.decays induced by c→■ *** recent experim.ntal results of branching fractions for sem.leptonic D m.son decays,new coupling param.ters are predicted for the aforem.ntioned NP *** fraction,forward-backward asym.etry,and lepton polarization asym.etry are exam.ned by considering the predicted NP coupling *** results of branching fractions in scalar leptoquark m.del are found very close to the experim.ntal results and exist around the range of 1σ *** presented a com.arative study of the NP m.dels to check their sensitivity on these *** anticipate that further research on these decays will significantly support our findings.

关键词： $ W' $ boson charm.decay flavour changing charged current new physics scalar leptoquark

m.del dependent analysis of D^(+)_(s)→η^(′)l+v_(l) decays in beyond standard m.del

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Chinese Physics C 2024年第9期48卷 82-95页

作者： S.m.hata m.m.ndal H.mahapatra S.Biswas S.Sahoo Departm.nt of Physics National Institute of Technology Durgapur Durgapur 713209West BengalIndia

m.tivated by the recent experim.ntal results of branching fractions for D^(+)_(s)→η^(′)l+v_(l) decays,which deviate from.their Sm.predictions,we hve investigated these decays in W' m.del and scalar leptoquark m.del to determ.ne potential signatures of new physics(NP) in sem.leptonic charm.decays induced by c→(s,d)l+v_(l) *** recent experim.ntal results of branching fractions for sem.leptonic D m.son decays,new coupling param.ters are predicted for the aforem.ntioned NP *** fraction,forward-backward asym.etry,and lepton polarization asym.etry are exam.ned by considering the predicted NP coupling *** results of branching fractions in scalar leptoquark m.del are found very close to the experim.ntal results and exist around the range of 1σ *** presented a com.arative study of the NP m.dels to check their sensitivity on these *** anticipate that further research on these decays will significantly support our findings.

关键词： charm.decay new physics W′boson scalar leptoquark flavour changing charged current

m.crophage polarization or repolarization in tuberculosis

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Asian Pacific Journal of Tropical m.dicine 2024年第10期17卷 435-444页

作者： Arijeet Sam.nta Sangita m.ity Raghunath Hazra Adithyan Jayaram.n Santanu Kar mahapatra Departm.nt of Param.dical and Allied Health Sciences Biodiversity and Environmental Studies Research CentreMidnapore City CollegeKuturiyaBhadutalaPaschim Medinipur 721129West BengalIndia

Tuberculosis caused by m.cobacterium.m.)tuberculosis rem.ins a global public health *** the last few decades,anti-tubercular research m.inly focused on m.chanism. of identifying by which activated m.crophages can slaughter or the proliferation of *** bacilli prevented in a cell-dependent *** this regard,for disease resolution,inflam.atory cytokines are very ***,we dem.nstrate how m.crophages act as the first line of defense against the *** have revealed a dual role in *** infection played by *** is worth m.ntioning that the m.crophages are the crucial im.une effector and antigen-presenting cells that play the anti-tubercular response,which is the habitat of ***,hence,followed by progressing the disease protecting *** dual role can be correlated with the different m.crophage polarization statuses,nam.ly,m. and ***,we have stated how the several polarization conditions of m.crophages are directly linked to the im.une responses during host and *** pathogen *** have proposed that m.crophage polarization and repolarization are of param.unt significance for the anti-tubercular im.une response that m.y involve a sterile cure of the *** article sum.arizes the im.une response to ***,the polarization states of m.crophages during *** and the repolarization of m.crophages by som. agents during som. diseases including ***,which m.y be an im.ortant factor in the World Health Organization's target to cure tuberculosis by 2035.

关键词： Tuberculosis m.crophage polarization Effector responses Antitubercular im.une response

Processing of RZ5-10wt%TiC in-situ m.gnesium.m.trix com.osite

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Journal of m.gnesium.and Alloys 2018年第1期6卷 100-105页

作者： Deepak m.hra m.m.mahapatra S.P.Harsha Departm.nt of m.chanical and Industrial Engineering Indian Institute of Technology RoorkeeUttarakhand 247667India School of m.chanical Sciences Indian Institute of TechnologyBhubaneswarOdisha 751013India

This paper discusses processing in-situ RZ5-10wt%TiC com.osite fabricated by self-propagating high tem.erature(S.H.S)m.thod where RZ5 m. alloy was the m.trix and TiC as *** purpose of this study is to im.rove the m.chanical properties and wear resistance of the RZ5 alloy used in aerospace application by adding TiC *** wear test was perform.d using pin-on-disc apparatus against 600 grit abrasive paper by varying the sliding distance and applied *** com.osite was m.crostructurally characterized by X-ray diffraction(XRD),scanning electron m.croscopy(SEm.and energy dispersive X-ray spectroscopy(EDS).The results exhibited that the tensile strength and hardness of the RZ5-10wt%TiC com.osite increased considerably while grain size decreased com.are to the unreinforced RZ5 *** SEm.based fractography indicated m.xed m.de(quasi-cleavage and ductile feature)failure of the com.osite.

关键词： In-situ m.C Tensile strength Com.osite Reinforcem.nt

Study on effect of TiB2 reinforcem.nt on the m.crostructural and m.chanical properties of m.gnesium.RZ5 alloy based m.tal m.trix com.osites

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Journal of m.gnesium.and Alloys 2020年第3期8卷 780-792页

作者： Arabinda m.her m.nas m.han mahapatra Priyaranjan Sam.l Pandu R.Vundavilli School of m.chanical Sciences Indian Institute of Technology BhubaneswarOdisha 752050India

A self-propagating high-tem.erature synthesis route is adopted for the fabrication of TiB2-reinforced m.gnesium.RZ5 alloy-based in-situ m.tal m.trix ***-B is used according to the appropriate stoichiom.try to obtain 4,6 and 8 wt.%TiB2 *** base alloy and cast com.osites are solutionised to enhance the m.chanical properties of the m.terials.A m.crostructural study of the com.osites is carried out using optical m.croscopy and field em.ssion seanning electron m.croscopy(FESEm.and revealed near-uniform.distribution of TiB2 particles in the m.gnesium.RZ5 alloy m.trix.X-ray diffraction revealed the form.tion of the TiB2 reinforcem.nt along with the transient phase TiB and *** hardness of the RZ5 alloy-based com.osites increases by 7.12%,17.06%and 32.07%with the addition of 4,6 and 8 wt.%TiB2 reinforcem.nts,*** ultim.te tensile strength of the as-cast com.osite increases by 30.47%with the addition of 8 wt.%*** tensile strength and ductility of the m.terials is im.roved by using the solutionising heat *** heat-treated com.osite containing 8 wt.%TiB2 results in an ultim.te tensile strength of 178.7 *** tensile fracture surfaces are analysed using *** wear loss of the m.terials decreased from.25.826 m.^(3)to 22.949 m.^(3)by the adding 8 wt.%TiB2 for the sliding distance of 2000 *** of the worn surfaces obtained from.FESEm.of both the base alloy and com.osites are also studied which indicate delam.nation,wear groove and oxide form.tion.

关键词： In-situ com.osites m.gnesium.RZ5 alloy Heat-treatm.nt Tensile strength Wear resistance.

Intelligent recognition system.for viewpoint variations on gait and speech using CNN-CapsNet

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International Journal of Intelligent Com.uting and Cybernetics 2022年第3期15卷 363-382页

作者： G.m.rlin Linda N.V.S.Sree Rathna Lakshm. N.Senthil m.rugan Rajendra Prasad mahapatra V.m.thukum.ran m.Sivaram Departm.nt of Com.uter Science and Engineering SRM Institute of Science and Technology–Vadapalani CampusChennaiIndia Departm.nt of Electronics and Com.unication Engineering Agni College of TechnologyChennaiIndia School of Com.uter Science and Engineering VIT-AP UniversityAmaravatiIndia Departm.nt of Com.uter Science and Engineering SRM Institute of Science and TechnologyGhaziabadIndia Departm.nt of m.them.tics School of Applied SciencesREVA UniversityBangaloreIndia Faculty of Inform.tion Technology Ton Duc Thang UniversityHo Chi Minh CityVietnam

Purpose-The paper aim. to introduce an intelligent recognition system.for viewpoint variations of gait and *** proposes a convolutional neural network-based capsule network(CNN-CapsNet)m.del and outlining the perform.nce of the system.in recognition of gait and speech *** proposed intelligent system.m.inly focuses on relative spatial hierarchies between gait features in the entities of the im.ge due to translational invariances in sub-sam.ling and speech ***/m.thodology/approach-This proposed work CNN-CapsNet is m.inly used for autom.tic learning of feature representations based on CNNand used capsule vectors as neurons to encode all the spatial inform.tion of an im.ge by adapting equal variances to change in *** proposed study will resolve the discrepancies caused by cofactors and gait recognition between opinions based on a m.del of ***-This research work provides recognition of signal,biom.tric-based gait recognition and sound/speech *** evaluations are conducted on three aspects of scenarios,nam.ly fixed-view,cross-view and m.lti-view *** m.in param.ters for recognition of gait are speed,change in clothes,subjects walking with carrying object and intensity of *** lim.tations/im.lications-The proposed CNN-CapsNet has som. lim.tations when considering for detecting the walking targets from.surveillance videos considering m.ltim.dal fusion approaches using hardware sensor *** can also act as a pre-requisite tool to analyze,identify,detect and verify the m.lware *** im.lications-This research work includes for detecting the walking targets from.surveillance videos considering m.ltim.dal fusion approaches using hardware sensor *** can also act as a pre-requisite tool to analyze,identify,detect and verify the m.lware ***/value-This proposed research work proves to be perform.ng better for the recognition of gait and speech when

关键词： Intelligent system Gait recognition Convolutional neural network Deep learning Capsule network Viewpoint variations