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MODELING DEGRADATIONUSING THERMODYNAMICENTROPY

Deliza

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Dosen Pengajar : Prof. Hermansyah aziz

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 THERMOD!"M#$ DE%R"D"T#O! P"R"D#%M "!D DE%R"D"T#O! E!TROP%E!ER"T#O! THEOREM

Doelling& 'ing& (ryan)& an* Heilman +2000, originally -ro-ose* )he Thermo*ynami Degra*a)ion Para*igm

yang menya)a/an aha en)ro-i ireersiel *i-ro*3/siseagai /onse/3ensi *ari *egra*asi *a-a) menja*i *asarariael 3n)3/ /3an)i)a)if menggamar/an *egra*asi

 Mengira *egra*asi en)3/ a-a-3n*a-a) *i3/3r *engan ariael w

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"--lia)ions

 (a))ery Degra*a)ion

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Sliding Wear

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Metal Fatigue

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Batter Degradati!n

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5ohlfahr)6Mehrens& 7ogler 8 Hammo3he& 200,. Palinglazim a*alah:

+a, 3mlah si/l3s harge6*isharge yang *ialami oleha)erai: si/l3s leih er/3rang+, ;e*alaman *ei) +DOD6 -ersen *ari a)erai;a-asi)as hais selama harge6*ishargesi/l3s,: leih esar DOD meng3rangi si/l3s *an mening/a)/enai/an energi *iham3r/an -er si/l3s.+, *e/om-osisi ele/)roli) *i)ing/a)/an *engan )inggis3h3 *an 'i -la)ing.+*, Ele/)ro*a -la)ing oleh 'i& yang mening/a)/an resis)ensi*an mem3*ar /a-asi)as& *i-er3r3/ oleh leih ren*ah<3h3.

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Me)o*e yang *isaji/an erasal -ersamaan *iferensial yang menga)3rsis)em *egra*asi *ari -enilaian )erha*a- en)ro-i ireersiel yang*ihasil/an oleh -engo-erasian sis)em. Persamaan +2,& yangmenya)a/an hasil se*erhana *ari )eorema DE%& *ia-li/asi/an /e)em-a)6)em-a) *egra*asi -a/ai& /elelahan& *an -en3aan a)erai. (ila*i)era-/an /ena/an& DE% )eorema *an Persamaan. +2, mema/ai

)er/ai) *engan gese/an *an a/3ra) *ijelas/an eera-a en)3/mema/ai yang *ila/3/an *an )i*a/ mema)3hi H3/3m mema/ai"rhar* ini. (ila *i)era-/an /elelahan& yang DE% )eorema *anPersamaan. +2, )e-a) *ise3) /elelahan& 3n)3/ *iali/ len)3r& )orsi& *an/ominasi& *an menyea/anMe)o*e /ehi*3-an /elelahan *i-re*i/si *engan meng3/3r s3h3.

"/hirnya& /e)i/a )eorema DE% *an Persamaan. +2, yang memai 3)a*i)era-/an 3n)3/ mo*el *inami/a sis)em a)erai& se3ah e/s-resi3n)3/ -en3aan a)erai Persamaan. +=, *i-eroleh aha /3ali)a)ifse)3j3 *engan -engama)an yang a*a *ari 'i ion a)erai

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