Kobe University Repository : Kernel - lib.kobe-u.ac.jp

1 kobe University Repository : Kernel (Evaluation of Thermal Contact Title Resistance at the Interface Composed of Dissimilar Materials).. , / , / , . Author(s).. A ,76(763):344-350. Citation . 2010-03-25. Issue date . Journal Article / . Resource Type . publisher Resource Version . CiNii . Rights DOI. JaLCDOI. URL Create Date: 2018-08-07. 3. 44. (A ) 76 763 (. 201. 0-3. ). *. *1 *2. Evalua ionofThermalContac R. esi s ance a ttheInterf aceComposedofDissimi Iar at eria ls T. osh imi ch O A*3 M. iFUK asatakaNOMURAandA. kih iroYAMADA. 3G. rad uat eSc hoo lofM. ari tim eSc ien ces KobeU. niv ers ity . 5. -11F. - ukaeminami H. iga shi nad a-u . k K. obe -si H. h yog apa n Whenj ointe dp ortionso fst ruct ures and machines ares ubject e dtot hermall oad arious problemsandt roub leso ccurduet othed i erenceint herm alexpansionbetweenmatingp arts.

2 I n ordertoa ccuratelya n alyzethermalandmechanicalb ehaviorsoft hejoins t t heeffectoft herm al contactresistan cemustbetakeni ntoaccoun t .I nth ispaper thermalc ontac tcoe cien t whichi sthe recip rocalo fthermalc on tactr esistan ce att heint erfacecomposedo fd is simila rm ater ialsisq u anti- tati vely measured by i nfrared thermography. The t arge tm a terialsa re common e ngineerin g materialssucha scarbons t eel stain lesssteelandaluminuma l hatt h ereexits as i gnifica ntd ir ectione ecti nthermalc ontactcoe cIentswhent h ematings urf aceiscomposedo f di erentmaterial s. Thati s themagnitudeo fthecoe c ien tg iveslargervaluewhent heh eatftows fromt hematerialwithlowerthermalc onductivi tytot h eonewithh igh e rthermalcond uctivity .AIso . thee f fectso fcontactp ressureand s urfaceroughnessa ree val uated.

3 Ane mpiric ale quationto estimatet herm alc ontactcoe cientisproposed whichcanapproximatet hee xpe rimentalv alues withsu cientaccuracyfromt hee nginee r ingpoin to fv i ew. Key Words: ThermalContactResi stanc e D. issimi larM. ate ria ls Fixing I. nfr are dThermography. ContactP. ressure S. urfac e oughness / . 1.. 2). ( . (3).. " .. (. 4) .. (1) .. " .. 2. 009 8 1. 8B. (~658 . 0. 022 5. -1-1. ). f . *2 . E. -ma il:f uku oka @ma rit ime .ko be- p . - 88- 345. p (MPa) Hv . (W/m Ra1. ~ Ra21 ( m) .. Cl C l n i 2 n .. i . SS400 S45C SUS304 . A2024 AI050 . E. E .. F. ig .1 He atf t owar oun dth ein ter fac eco mpo sedo fdi ssi mil ar ma r ia ls 2..3 .. Br e lay ( R. oge rs(. 7) .. 2.. 2..1 l .. 5 20% . { .. JJt .. L. 1T( .. (W/m2K) .. L. 1T q(W/m2) 1 .. q . c= = . " (. h 1). 1T R. L.)))}

4 R .. 3.. L. 1T q (1) .. 3..1 i ( . 2..2 h c . q L. 1T . (. 1) . q . r ( p 2/3 1 . 0 1Cl J. c=1. h 5.. + . -;. ;1 .. (2) aT.. 1 a . '. " a 1 'I. (. n .(. 3). Ra( =Ral+Ra2 n .. Cl = [ .06. 5] Tjan . C2= [ 0..09. 5J . m= . [08 .. 0..9] .. n= . [07 .. 0..8] aTj . - 8. 9. 3. 46 .. upper ts ci men C>*J H~ d ire cl Ion0. 1he atf low I. nrr are dTh err . - .. J. h (. a). U. BEY. F. E. xpe rim ent als etu pfo rme asu rin gth erm alc ont actc oef fic ien t . T/dn 12mm . q 2 ..T 1. q .d . 2 J3t 1% .. 3..2 2(. ) .. S45C SUS304 . A2024 3 15mm 80mm .. Ra m m 6. 4 m 3 . i .. i . 0..7 5..1 9..5 1. 8. 2. 4 .. 3 3.. 6 .. Ra Ra 4.. 1. 8 . Ef. 4 1 3 . S45C .. Ra SUS304I.. 3..3 I. 1 2. (a) Ra m .. 2 ..T .. d . j . 30W .. 4 . i q .. 2 E . 2. 0-- --3. 0 . q .. 60 .. 30 . -90- 3. 47. i 250.. ! E. SUS304 ~S45C.))))]

5 Heatflow d ir --- . e cti on ~ 1. O. - .. ;: n 0 .. - 1. 1. 50.. u . i E. L. 1T. E. 1. e . U. - : -: -: - :I. : H.. 50. U.. E. 1. 00. ~. E.. C.. u .. - ' . ! .. H. n u .. F. J. 45. uh . l nt! i ce . upperstecimen . 1.. lowerstecimen 1. 0 20 3. 0 40 50. i4 - T . - -- .i O. 40. C. ont actP. res sur e(M. Pa). -1. 2 ~ 4 0 4 1. 2. F. ig5 Thennalc . ont actc oef fic ien tatt hei nte rfa ceb etw een D. istancefromi n rface(mm). S45 CandSUS304. F. ig3 T.. emp e ra tured istr ibu tio nsa rou ndt hei nte rfa ce 5. 1. lO. O. betw nS45 CandSUS304. ! C 1. 0 i } (.. 40000. )H. (. h eat flxq u H.. E. ~ .. ~.. C. { } ~ 8( .. H.. 3 00. n E. h .. w vg u gas-g . ~. X. 6. i ) G G .. S. =. u z - WE. w .. - g t her maJC. 01I. UlC. tco eff ici ent h 20 G. g u n X)(. ).. 4(.. -f 4( O.. t g L. C .. a.))

6 G . s LF. - a'F. 1. 000. 0 . 2. 2. i 1. 0. 0 .. 0 . o 2. 0 4. () 60 80. G 1. 0 20 30 40 50. Tlme(mln). C. ont actP. res sur e(MP. ). F. ig4 V.. ari ati onsoft her malc ont actc oef fic ien tandhe tf lux w ithtime (. a).. 3. 5. SUS304 A2024.. 4 2 . : . E.. c G. 30 . 5 . S S304 S45C .. ;. : 25 G.. 358u SE2-g 2. 1. p .. Ra .. 1. 500. 0. O. B.. SUS304 S45C .. -U . j .. - 1. 0 G. e .. ZH. 6. 2 10. a . IJ . a .. 00 p . G 1. 0 20 3. 0 40 50. p C. ont actP. r s ure(. MPa ). Ra (b).. F. ig. 6 Thennalc ont actc oeff ici ent sfort heco mbi nat ion sof S45 CandA2024 SUS304andA2024. 6. (a)..() S45C A2024 SUS304 . b - 9. 1. 3. 48 . 50000 5 .. = H. eatf lowd ire c on: (. l I.. Ra 1..6 . 2!i ialiii 11111 . H. g ~.. ~..S45C i>. o A2024'. '.. -g 4 .. p=44 MPa S45C~A2024.. c : . =>S45C. SUS304=>A2024.)

7 - . - B.. - .. c : Q . A2024; >SUS304.. USES- SH. 3 O >S45.. : _ 3 .. ! S45C: . J I. :>SUS304. - E. E . & . o .. 1 iiiiii Ill11fs7. 52.. aa 20 0 . E.. s . a I5.. 1 MPa Em rr .. 1 .. JL . e . 2.. ~.. i3 .. i . 4a . 1. 0 20 30 40 5. 0 5 . p R (-Hg e s u C. ont actP. res sur e( I. Pa) Ra(. m).. H.. (. a). o s 35000.. mwou .. - .. ! 4 . 2. ~a= ~. A. 'zg ~ p= 6M.. Q . 9 .. 7 o .. 30000. S45C >A2024 ~. - s g 3.. o A2024:=>S45C.. e : 6 .. c 9 ..SUSJ <W..=. ; . c : . 25000. A2024 =>SUS304 . -AVE&. a S. A SUS3 Q4=>S45C S. u o UEszugg - A.. g 5 . !J..'S45C >SUS304 . b . 20 9. - - 24. uH. o . D. u 4 . g 1. 500. 0. z e : s A. - aH. u . 4. o -g 3 . a .- ;.. l 00.. 1.. -FH. 2 5000. 1. i B. 1. 0 20 30 40 50 2 4 . C. ont actP. res sur e(M. Pa) S. urf aceR. oug hne s Ra m). (. b) (. b). F. ig. 7 Comparisonofth ermalc ont actco eff ici ent sfo rva rio us F.

8 Ig. 8 E. ffe ctofsur fac ero ugh nes sont her malc ont act combina tionsofdi ssi mil armat eri als c oef fic ien t A2024 3 .. S S304 S45C . 3 .. hc p S45C A2024. Ra . 5 6 .. lT. L . 4 . 8(a) (. b) Ra . S45C A2024 SUS304 A2024.. (. 2) p . ( Ra ..Ra J. i .. p . l OOW/m2K . Ra . hc .. p . 4..3 4..4 i i il . 7. (a ) (. b) Ra=1..6 m 6..4 m (. 2). - 9. 2. 3. 49.. T. abe1 T. l herma lcond uct ivi tya ndV. ic e rsh ard nes soft es t s pec lmens Hv . M. ate ria l T. her malC. ond uct ivi ty V. ick ersH. ard nes s Ra . (W/mK) (Hv). p .. A2024 1. 20. 0 1. 25. 0.. S45C 4. 2. 47. 0.. SUS304 1. 2. 25. 0.. (. 2) 1 .. j .. ! ili-- nun . n nu i p d ! .. i j S4. 5C=>A2024. i ( ) . ! ! A2024=>S45C.. ! Illi--tLjji--LIti-- ? i . !;. i33. 33. H7ih -7tili--iHF. auggu--szcu . 3.. unu UnU. 5. 3. 25. 338.)

9 5. - 1 2. -R. Jm &. R. a(=Ral Ra2.. z:i!?![ii 3.. a C. l = [ ]. 2= [ . C ]. )= [0. 0. C .2]. m =1..0 [ . ]. n= 1. 0 2. 0 3. 0 40 50. 1 J. I 2 C. ont actP. res sur e(M. Pa). {. J. I. J . (. a). i (1) 3. 5 o CI Cz C) m n i . : . c : 3. 000. 0. SUS304=>A2024.. ~ 9. (a) (. b) . S45C A2024 SUS304. H.. A2024 =>SUS304. : ;. A2024 ).. : : 25 o c J. h I . -ESUES--USES- .. (. 4) { 20000.. ( . 1. 5( .. 10000.. 5.. E. s ::> 5 o ( . 1. 0 2. 0 3. 0 40 50.. C. ont actP. res sur e(M. Pa).. (. b).. F. ig. 9 Comparisonofc alc ula tedres ult sbyth eprop ose d (2) empi ricalequ ati onwit he x perim ent alone s .. ; (4) .. (3) { .. - 93- 3. 50 . il arMetals- TheInfl uenc eofTh ermalSt ran I. i ntJ..He at MassTran r Vol .9(19. 66) . (. 1) Fukuoka T.. E. val uat iono fTh erm alC. ont act (. 6)B. raz ela y.)]}}}

10 Tong K.. FE. G.. f fec t Res i s tanc eina nAtmosphericEnvironment Tr ansacti ons ofP. res sur eandThermalConductanceo fCo nta ctJ. oin ts NACATN3295 (. 1955. ). Vo. 165 (1999) 8-253. (. 2) FukuokaT.. F. K.. init eElementAnal- (. 7)R. oge rsG..F .. c HeatTransferattheInterfaceofDis . s imi larMeta ls 1..HeatMassT r ansf er Vo .2(. l 1960 . ys iso ft heThermalandM e c hanic alBehavio rso fBol ted p 54. J o int Tra n s acti o s0. n 1/heJapanSociety01 Mechanical Engi neers Se riesA Vol .68 (. 2002) pp. I-7. (. 8)F. uji shi ro H.. Okamoto T. I.. keb e M. a nd Kawai K.. Quan tita tiveEstim ationo fThe rm alC ont actResis tanc e (. 3)Fukuoka T.. Nomura hin o A. K.. n aly siso fHeat betweentheDif feren tM ateria ls Abs trac tsofC r yogeni c FlowAroundofBolt e dJoi ntsandVar iat ion sofAxialBolt Soci ety01 JapanCo ference Vol.)