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State of the Art of Biodegradable Nanofluids Application in Machining Processes
Vitor Baldin,Leonardo Rosa Ribeiro da Silva,Alisson Rocha Machado,Celso Ferraz Houck 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.10 No.5
For ecological and health issues of those involved in the manufacturing, usage, handling, and disposal of cutting fluids, research has been developed for scientific and technological advances in biodegradable cutting fluids, application methods, and solid nanolubricants. Using a minimum quantity of lubricant (MQL) in machining processes proved to be a viable alternative to replacing low-pressure jet machining. Nanoparticles from 5 to 100 nm in size are usually dispersed in vegetable-based cutting fluid; this combination improves the tribological properties of the nanofluid and the machinability of metal alloys like steel, titanium, nickel, and aluminum alloys, with reduced cutting forces, cutting temperature, tool wear and workpiece surface roughness. This work aims to present an updated summary of the lubrication and cooling action provided by using the MQL technique, biodegradable cutting fluids applied by MQL, the use of nanoparticles added to the cutting fluids, and the physical properties of nanoparticles, tribological characteristics, and the behavior of the nanofluids. The changes in machining force, cutting temperature, surface integrity, and wear of cutting tools with biodegradable nano-cutting fluids are also focused on. The use of nanoparticles in cutting fluids associated with MQL application has shown an increase in the lubricating and coolant properties of cutting fluids, which contribute to the reduction of machining force, cutting temperature, workpiece surface roughness, coefficient of friction, and wear of cutting tools. Thus, the results of this summary can provide theoretical support and experimental guidance for exploring the lubricating and cooling properties and the mechanism present in film formation with nanofluids at the chip-too-workpiece interfaces. Knowledge of such phenomena helps to popularize an eco-friendly practice in metal-mechanic industries.
W. Furman,A. Baldin,A. Rogov,B. Guskov,E. Kostyukhov,I. Marin,M. Krivopustov,N. Gunddorin,N. Rebrova,S. Pavlov,V. Krasnov,V. Smirnov,A. Chinenov,B. Fonarev,M. Galanin,N. Ryazansiy,S. Solodchenkova,V. 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Prompt and delayed neutrons (DN) from pulsed irradiation of geometrically identical natural uranium and lead targets by 1 and 4 GeV deuterons were measured at NUCLOTRON facility of Joint Institute for Nuclear Research. The massive hexagonal shaped targets were surrounded by 10 cm lead blanket. Neutrons were measured by the assembly of ^3He counters embedded in moderator and by threshold activation detectors. The DN decay curves were analysed for both targets and information on fission properties for massive (∼315 kg) uranium target was extracted. The obtained experimental information could be useful for verification of INC and transport codes. The results of this experiment are important for development of advanced ADS systems and other applications.
Abazov, V.M.,Abbott, B.,Acharya, B.S.,Adams, M.,Adams, T.,Alexeev, G.D.,Alkhazov, G.,Alton, A.,Alverson, G.,Aoki, M.,Askew, A.,Atkins, S.,Augsten, K.,Avila, C.,Badaud, F.,Bagby, L.,Baldin, B.,Bandurin Elsevier 2012 Physics letters: B Vol.714 No.1
<P><B>Abstract</B></P><P>We present measurements of the differential cross section dσ/dpTγ for the inclusive production of a photon in association with a <I>b</I>-quark jet for photons with rapidities |<SUP>yγ</SUP>|<1.0 and 30<pTγ<300?GeV, as well as for photons with 1.5<|<SUP>yγ</SUP>|<2.5 and 30<pTγ<200?GeV, where pTγ is the photon transverse momentum. The <I>b</I>-quark jets are required to have <SUB>pT</SUB>>15 GeV and rapidity |<SUP>yjet</SUP>|<1.5. The results are based on data corresponding to an integrated luminosity of 8.7 fb<SUP>−1</SUP>, recorded with the D0 detector at the Fermilab Tevatron pp¯ Collider at s=1.96?TeV. The measured cross sections are compared with next-to-leading order perturbative QCD calculations using different sets of parton distribution functions as well as to predictions based on the <SUB>kT</SUB>-factorization QCD approach, and those from the <SMALL>SHERPA</SMALL> and <SMALL>PYTHIA</SMALL> Monte Carlo event generators.</P>
Search for theX(4140)state inB+→J/ψϕK+decays with the D0 detector
Abazov, V. M.,Abbott, B.,Acharya, B. S.,Adams, M.,Adams, T.,Agnew, J. P.,Alexeev, G. D.,Alkhazov, G.,Alton, A.,Askew, A.,Atkins, S.,Augsten, K.,Avila, C.,Badaud, F.,Bagby, L.,Baldin, B.,Bandurin, D. V American Physical Society 2014 PHYSICAL REVIEW D - Vol.89 No.1
<P>We investigate the decay B+ -> J/psi phi K+ in a search for the X(4140) state, a narrow threshold resonance in the J/psi phi system. The data sample corresponds to an integrated luminosity of 10.4 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider. We observe a mass peak with a statistical significance of 3.1 standard deviations and measure its invariant mass to be M = 4159.0 +/- 4.3(stat) +/- 6.6(syst) MeV and its width to be Gamma = 19.9 +/- 12.6(stat)(-8.0)(+3.0)(syst) MeV.</P>
Measurement of differentialtt¯production cross sections inpp¯collisions
Abazov, V. M.,Abbott, B.,Acharya, B. S.,Adams, M.,Adams, T.,Agnew, J. P.,Alexeev, G. D.,Alkhazov, G.,Alton, A.,Askew, A.,Atkins, S.,Augsten, K.,Avila, C.,Badaud, F.,Bagby, L.,Baldin, B.,Bandurin, D. V American Physical Society 2014 PHYSICAL REVIEW D - Vol.90 No.9
Observation and studies of doubleJ/ψproduction at the Tevatron
Abazov, V. M.,Abbott, B.,Acharya, B. S.,Adams, M.,Adams, T.,Agnew, J. P.,Alexeev, G. D.,Alkhazov, G.,Alton, A.,Askew, A.,Atkins, S.,Augsten, K.,Avila, C.,Badaud, F.,Bagby, L.,Baldin, B.,Bandurin, D. V American Physical Society 2014 PHYSICAL REVIEW D - Vol.90 No.11
Study ofCP-violating charge asymmetries of single muons and like-sign dimuons inpp¯collisions
Abazov, V. M.,Abbott, B.,Acharya, B. S.,Adams, M.,Adams, T.,Agnew, J. P.,Alexeev, G. D.,Alkhazov, G.,Alton, A.,Askew, A.,Atkins, S.,Augsten, K.,Avila, C.,Badaud, F.,Bagby, L.,Baldin, B.,Bandurin, D. V American Physical Society 2014 PHYSICAL REVIEW D - Vol.89 No.1
Double parton interactions inγ+3jet andγ+b/cjet+2jet events inpp¯collisions ats=1.96 TeV
Abazov, V. M.,Abbott, B.,Acharya, B. S.,Adams, M.,Adams, T.,Agnew, J. P.,Alexeev, G. D.,Alkhazov, G.,Alton, A.,Askew, A.,Atkins, S.,Augsten, K.,Avila, C.,Badaud, F.,Bagby, L.,Baldin, B.,Bandurin, D. V American Physical Society 2014 PHYSICAL REVIEW D - Vol.89 No.7
Abazov, V.M.,Abbott, B.,Acharya, B.S.,Adams, M.,Adams, T.,Agnew, J.P.,Alexeev, G.D.,Alkhazov, G.,Alton, A.,Askew, A.,Atkins, S.,Augsten, K.,Avila, C.,Badaud, F.,Bagby, L.,Baldin, B.,Bandurin, D.V.,Ban Elsevier 2015 Physics letters: B Vol.743 No.-
<P><B>Abstract</B></P> <P>We present a measurement of the cross sections for the associated production of a <I>W</I> boson with at least one heavy quark jet, <I>b</I> or <I>c</I>, in proton–antiproton collisions. Data corresponding to an integrated luminosity of 8.7 <SUP> fb − 1 </SUP> recorded with the D0 detector at the Fermilab Tevatron p p ¯ Collider at s = 1.96 TeV are used to measure the cross sections differentially as a function of the jet transverse momenta in the range 20 to 150 GeV. These results are compared to calculations of perturbative QCD theory as well as predictions from Monte Carlo generators.</P>
D0 Collaboration,Abazov, V.M.,Abbott, B.,Acharya, B.S.,Adams, M.,Adams, T.,Alexeev, G.D.,Alkhazov, G.,Alton, A.,Alverson, G.,Askew, A.,Atkins, S.,Augsten, K.,Avila, C.,Badaud, F.,Bagby, L.,Baldin, B. North-Holland Pub. Co 2012 Physics letters: B Vol.716 No.2
We present a search for the standard model Higgs boson in 9.5 fb<SUP>-1</SUP> of pp@? collisions at s=1.96 TeV collected with the D0 detector at the Fermilab Tevatron Collider. The final state considered contains a pair of b jets and is characterized by an imbalance in transverse energy, as expected from pp@?→ZH→νν@?bb@? production. The search is also sensitive to the WH→@?νbb@? channel when the charged lepton is not identified. The data are found to be in good agreement with the expected background. For a Higgs boson mass of 125 GeV, we set a limit at the 95% C.L. on the cross section σ(pp@?→[Z/W]H), assuming standard model branching fractions, that is a factor of 4.3 times larger than the theoretical standard model value, while the expected factor is 3.9. The search is also used to measure a combined WZ and ZZ production cross section that is a factor of 0.94+/-0.31(stat)+/-0.34(syst) times the standard model prediction of 4.4 pb, with an observed significance of 2.0 standard deviations.