!
An in es iga ion o he he mal
conduc i i y o epoxy esin sys ems
illed wi h bo on ni ide pa icles
Annex
S uden : Ad ià Folch Roy
Di ec o : John M. Hu chinson
Co-di ec o : F ida Román
S udies: G au en Enginye ia en Vehicles Ae oespacials
Deli e y da e: 10 h o June
In he ollowing documen all he e alua ions ha has been made du ing he
TFG a e going o be p esen ed.
In his i s sec ion he ollowing e alua ions a e exposed:
• E alua ions om he samples o he dual cu ing p ocess
• E alua ions o iso he mal expe imen s o he ETLNB80-X sys em
• E alua ions o dynamic expe imen s o he ETLNB80-X sys em
• E alua ions o he mog a ime ic expe imen s o he ETLNB80-X
sys em
• E alua ions o iso he mal expe imen s o he ETLNB80/2-X sys em
• E alua ions o dynamic expe imen s o he ETLNB80/2-X sys em
• E alua ions o he mog a ime ic expe imen s o he ETLNB80/2-X
sys em
• E alua ions o iso he mal expe imen s o he ETLNB80/6-X sys em
• E alua ions o dynamic expe imen s o he ETLNB80/6-X sys em
• E alua ions o he mog a ime ic expe imen s o he ETLNB80/6-X
sys em
In he second sec ion he esul s he e alua ions o he he mal conduc i i y
made by T ansien Ho B idge me hod is shown o :
• ETLNB80-30
• ETLNB80-50
• ETLNB80-60
• ETLNB80/2-30
• ETLNB80/2-50
• ETLNB80/2-60
• ETLNB80/6-30
• ETLNB80/6-50
• ETLNB80/6-60
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Linseis&Applica ion&
Labo a o y&
The mal&Analysis&
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Ope a o :!Admin!
Da e:!03/01/2017!
Di e en (me hods(and(measu emen ( anges:(
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Measu emen (p incipal:(
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The!T ansien !Ho !B idge!me hod,!which!is!used! o!measu e! he! he mal! anspo !
p ope ies!o !ma e ials,!is!an!enhancemen !o ! he!Ho !Wi e!o ! he!T ansien !Ho !S ip!
me hod!(DIN!EN!993-14,!DIN!EN!993-15).!The!measu ing!me hods!men ioned!a e!
ansien ,! ime!depended!measu ing!me hods.!The!ad an age!o ! hese!me hods!
compa ed! o!s a iona y!me hods!is!a!much!sho e !measu ing! ime,!and! he! he mal!
di usi i y!is!measu ed!in!pa allel! o! he! he mal!conduc i i y.!
The!mos !impo an !pa !o ! hese!me hods!is!a!s ip!shaped!conduc o !(Fig!1a),!which!
is!used!as!a!hea !sou ce!and!a! empe a u e!senso !also:!
Embedded!be ween! wo!pieces!o !sample!(Fig!1b),! he!s ip!emi s!a!cons an !hea ! low!
du ing! he!measu emen .!This!causes!i s! empe a u e! o! ise.!The! empe a u e! ise!
o e ! ime!co esponds! o! he! he mal! anspo !p ope ies!o ! he!sample.!
This!simple!a angemen !has! h ee!essen ial!disad an ages! o ! he!measu emen :!
1. Du ing! he!measu emen !some!amoun !o !hea !is!los !by! he! wo!elec ical!
conduc o s.!This!hea !loss!a oids! he! heo e ical!necessa y!homogeneous!
empe a u e!dis ibu ion!o e ! he!leng h!o ! he!s ip!and!leads! o!sys ema ic!
de ia ions!o ! he!measu emen !(end-e ec ).!
2. Because!o ! he! e y!low!elec ical! esis ance!o ! he!s ip,!i !has!only!a!low!
sensi i i y! o ! empe a u e!changes.!The!ou pu !signal!is! e y!low.!
3. Since! he! hickness!o ! he!Nickel! oil!used!is!only!5…10µm,!i ’s! e y!sensi i e! o !
mechanical!s ess!like!pulling!and! u ning.!
The!Quasi-S eady-S a e!(QSS)!me hod!is!a!new!de eloped!me hod! o ! he!
measu emen !o ! he mal!conduc i i y.!By!combining!cha ac e is ic!ad an ages!o !
s eady-s a e!and! ansien ! echniques!and!concomi an ly!a oiding! he!majo !
d awbacks!o !bo h! hese!classes!o !me hods,! he!QSS!me hod!is! he!pe ec !choice! o !
he mal!conduc i i y!analysis!in!a!wide! ange! om!below!1!W/(m•K)!up! o!100!
W/(m•K).!The!mos !impo an !s eps!in! he!de elopmen ! om! he!The mal!Ho !S ip! o!
he!Quasi-S eady-S a e!me hod!(QSS)!and! he!main!ad an ages!a e:!
1. By!adding!a! u he ! empe a u e!senso ! o! he!THW!o !THS!se up!is!gene a ing!
a!di e en ial!signal,!which!is!a! ime-in a ian !measu e!o ! he! he mal!
conduc i i y!o ! he!ma e ial!unde ! es .!This!signal!is!p ac ically!una ec ed!by!
homogeneous!iso he mal,!adiaba ic!and!con ec i e!bounda y!condi ions.!
2. No!gua ded!hea e !is!necessa y,!which!has! o!be!adjus ed!ca e ully!and!
con olled!pe manen ly.!So! he!measu emen !se up!is!simpli ied! o! he!
maximum.!
3. The!combina ion!o ! ansien !and!s eady-s a e! echniques!leads! o!quick!and!
eliable! esul s.!
The!Ho poin !senso !is!a!de elopmen !o ! he!QSS!senso !and!only!abou !4.5!mm!small.!
I s!size!allows!measu emen s!o !a!big! a ie y!o !applica ions,!wi h!small!sample!sizes.!
Due! o!i s!small!size,!side!e ec !can!be!neglec ed.!As!an!ex ension! o! he!
measu emen s!o ! he mal!conduc i i y,!wi h! his!senso ! he mal!di usi i y!can!be!
measu ed,! oo.!
! !
Resul s:(
Cus ome :!!!
O de &numbe :!!!
Sample:&AD!ETLNB80-30&
Senso & ype:&HTP&
Senso &name:&G_9161&
Commen :&!&
Measu emen & ime:&!100!s&
Cu en & o &T-measu emen :&10!mA&
Hea ing&powe :&50!mW&
D i &measu emen s:&20&
Measu emen s:!!4&
Delay:&100!s&
Maximum& empe a u e:&150!°C!
A e age( esul s:(
A g.&Tempe a u e:&20.3!°C&
A g.&Lambda:&0.797415!W/(m·K)!!
A g.&Alpha:&197774!mm²/s!!
A g.&Cp:&in !mm!
A g.&E usi i y:&0.00180341!(W√!s)/(m²·K)!
A g.& he mal&pene a ion:&2503.03!mm!
Tempe a u e&&in&°C&
Lambda&in&W/(m·K)&
20.00&
0.770814!
20.32&
0.793706!
20.47&
0.807183!
20.57&
0.817957!
!
Resul s:(
Cus ome :!!!
O de &numbe :!!!
Sample:&AD!ETLNB80-50&
Senso & ype:&HTP&
Senso &name:&G_9161&
Commen :&!&
Measu emen & ime:&!100!s&
Cu en & o &T-measu emen :&10!mA&
Hea ing&powe :&50!mW&
D i &measu emen s:&20&
Measu emen s:!!4&
Delay:&100!s&
Maximum& empe a u e:&150!°C!
A e age( esul s:(
A g.&Tempe a u e:&21.0!°C&
A g.&Lambda:&2.21045!W/(m·K)!!
A g.&Alpha:&165564!mm²/s!!
A g.&Cp:&in !mm!
A g.&E usi i y:&0.00545237!(W√!s)/(m²·K)!
A g.& he mal&pene a ion:&2292.13!mm!
Tempe a u e&&in&°C&
Lambda&in&W/(m·K)&
20.79&
2.16483!
20.93&
2.17564!
21.06&
2.25176!
21.13&
2.24956!
!
!
Resul s:(
Cus ome :!!!
O de &numbe :!!!
Sample:&AD!ETLNB80-60&
Senso & ype:&HTP&
Senso &name:&G_9161&
Commen :&!&
Measu emen & ime:&!100!s&
Cu en & o &T-measu emen :&10!mA&
Hea ing&powe :&50!mW&
D i &measu emen s:&20&
Measu emen s:!!4&
Delay:&100!s&
Maximum& empe a u e:&150!°C!
A e age( esul s:(
A g.&Tempe a u e:&21.6!°C&
A g.&Lambda:&3.4013!W/(m·K)!!
A g.&Alpha:&225703!mm²/s!!
A g.&Cp:&in !mm!
A g.&E usi i y:&0.00732245!(W√!s)/(m²·K)!
A g.& he mal&pene a ion:&2653.19!mm!
Tempe a u e&&in&°C&
Lambda&in&W/(m·K)&
21.74&
3.66339!
21.62&
3.33857!
21.57&
3.2933!
21.53&
3.30993!
!
Resul s:(
Cus ome :!!!
O de &numbe :!!!
Sample:&AD!ETLNB80/2-30&
Senso & ype:&HTP&
Senso &name:&G_9161&
Commen :&!&
Measu emen & ime:&!100!s&
Cu en & o &T-measu emen :&10!mA&
Hea ing&powe :&50!mW&
D i &measu emen s:&20&
Measu emen s:!!4&
Delay:&100!s&
Maximum& empe a u e:&150!°C!
A e age( esul s:(
A g.&Tempe a u e:&21.8!°C&
A g.&Lambda:&0.774141!W/(m·K)!!
A g.&Alpha:&197324!mm²/s!!
A g.&Cp:&in !mm!
A g.&E usi i y:&0.00174766!(W√!s)/(m²·K)!
A g.& he mal&pene a ion:&2503.11!mm!
Tempe a u e&&in&°C&
Lambda&in&W/(m·K)&
21.56&
0.752639!
21.81&
0.771082!
21.93&
0.783826!
21.96&
0.789017!
!
