Umwarimu w’ishuri ry’ikoranabuhanga rya Florida, emeritus Martin Glicksman, ubushakashatsi aheruka gukora ku byuma n’ibikoresho bifite ingaruka ku nganda zashingiweho, ariko kandi bifite aho bihurira cyane no guhumeka kwa bagenzi be babiri bapfuye.googletag.cmd.push (imikorere () {googletag.ikinamico ('div-gpt-ad-1449240174198-2 ′);});
Ubushakashatsi bwa Gliksman “Surface Laplacian y’ubushobozi bw’imyororokere y’imiterere: uruhare rwayo mu gushyiraho ubutegetsi bw’ibice bikomeye kandi by’amazi” byasohotse mu nomero yo mu Gushyingo y’ikinyamakuru gihuriweho na Springer Nature Microgravity.Ibyavuye mu bushakashatsi bishobora kuganisha ku gusobanukirwa neza no gushimangira ibyuma bikozwe mu cyuma, bigatuma abashakashatsi bakora moteri ndende n’indege zikomeye, ndetse no guteza imbere inganda ziyongera.
Glicksman yagize ati: "Iyo utekereje ku byuma, aluminium, umuringa - ibikoresho byose by'ubwubatsi, gutera, gusudira no gukora ibyuma by'ibanze - izi ni inganda zingana na miliyari z'amadolari y'agaciro gakomeye mu baturage."Ati: "Uzumva ko tuvuga ibikoresho, ndetse n'iterambere rito rishobora kuba ingirakamaro."
Nkuko amazi akora kristu iyo akonje, ikintu gisa nacyo kibaho mugihe icyuma gishongeshejwe gishimangiye kugirango gikorwe.Ubushakashatsi bwa Gliksman bwerekana ko mugihe cyo gukomera kwibyuma bivangwa nicyuma, uburemere bwubuso buri hagati ya kristu no gushonga, kimwe nimpinduka zijyanye no kugabanuka kwa kristu uko ikura, bitera ubushyuhe ndetse no mumwanya uhamye.Uyu mwanzuro wibanze uratandukanye cyane nuburemere bwa Stefan bukunze gukoreshwa mubitekerezo bya casting, aho ingufu zumuriro zitangwa na kirisiti ikura ihuye neza nubwiyongere bwayo.
Gliksman yabonye ko kugabanuka kwa kristu yerekana ubushobozi bwa shimi: kugabanuka kwa convex kugabanya gato gushonga, mugihe umurongo uhetamye uzamura gato.Ibi birazwi cyane muri thermodynamic.Igishya kandi kimaze kugaragara ni uko iyi ntera igenda itera ubushyuhe bwiyongera mugihe cyo gukomera, bitigeze byitaweho mubitekerezo gakondo byo gukina.Byongeye kandi, ubwo bushyuhe butemba "deterministic" kandi ntibisanzwe, nkurusaku rudasanzwe, rushobora kugenzurwa neza mugihe cyo gukina kugirango uhindure microstructure ya alloy kandi utezimbere imitungo.
Gliksman yagize ati: "Iyo umaze gukonjesha microstructures igoye, haba hari ubushyuhe buterwa n'ubushyuhe bushobora kugenzurwa."Ati: "Niba bigenzuwe ninyongeramusaruro cyangwa ingaruka zumubiri nkumuvuduko cyangwa imirima ikomeye ya magnetiki, ubwo bushyuhe butemba mumashanyarazi nyayo arashobora kunoza microstructure kandi amaherezo bikagenzura ibishishwa, ibyuma bisudira, ndetse nibikoresho byacapwe 3D."
Usibye agaciro ka siyansi, ubushakashatsi bwagize akamaro gakomeye kuri Glixman, ndashimira ahanini inkunga ifasha mugenzi wawe watinze.Umwe mu bo bakorana ni Paul Steen, umwarimu w’ubukanishi bw’amazi muri kaminuza ya Cornell, wapfuye umwaka ushize.Mu myaka mike ishize, Steen yafashije Glicksman mubushakashatsi bwe kubikoresho muri microgravitie akoresheje imashini zikoresha ibyogajuru hamwe nubushakashatsi bwibikoresho.Springer Nature yeguriye Steen nomero yo mu Gushyingo ikibazo cya Microgravity maze avugana na Gliksman kugirango yandike inyandiko yubumenyi yerekeye ubushakashatsi mu cyubahiro cye.
“Ibyo byanteye gushyira hamwe ikintu gishimishije Pawulo yashima cyane.Birumvikana ko abasomyi benshi b'iyi ngingo y'ubushakashatsi bashishikajwe kandi n'akarere Pawulo yagize, ni ukuvuga imiterere ya termodinamike ”, Gliksman.
Undi mugenzi we washishikarije Gliksman kwandika iyi ngingo ni Semyon Koksal, umwarimu w’imibare, umuyobozi w’ishami akaba na visi perezida w’ibikorwa by’amasomo mu kigo cy’ikoranabuhanga cya Florida, wapfuye muri Werurwe 2020. Gliksman yamusobanuye ko ari umuntu mwiza, uzi ubwenge wishimye. kuganira, avuga ko yamufashije gukoresha ubumenyi bwe mu mibare mubushakashatsi bwe.
“Twe na njye twari inshuti nziza kandi yari ashishikajwe cyane n'akazi kanjye.Semyon yamfashije igihe nateguraga ibipimo bitandukanye kugira ngo nsobanure ubushyuhe buterwa no kugabanuka ”, Gliksman.Ati: “Twakoresheje umwanya munini tuganira ku buringanire bwanjye n'uburyo bwo kubishyiraho, aho ubushobozi bwabo bugarukira, n'ibindi. Niwe muntu wenyine nigeze kugisha inama kandi yamfashije cyane mu gutegura inyigisho y'imibare no kumfasha kubikemura.”
Andi makuru: Martin E. Gliksman nabandi, Surface Laplacian yubushobozi bwimiterere ya thermochemicale: uruhare rwayo mugushiraho uburyo bukomeye-bwamazi, npj Microgravity (2021).DOI: 10.1038 / s41526-021-00168-2
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