No. 1, 1998 - Tribology in Industry

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yield stress of a gel rvas determined when the gel hegan to flow. The parameters k and n can be calculated using the relations (5), (6) and (7) and the experimental results presented in table 1. by the following method: a) Shear rafes, for various values of rr (table 2) are calculated using relation (5) and (7) and the erperimental results {tabie 1); b) The shear rates thus determined are used, together with relation (6) and the results of table 1, to calculate the values of k tactor and it's average site for various values of rr (table 3); Table 2 ,iib"i ,-';^ i,fi'l " 3l_ 0.86 I 0.87 L qo g l, ?o!,_! ?9,7 | qq-,6 ] 2o:g_L?g es 6.s-i *iijo*-l _t- i"" i *u I zs;s-l-zss 43.4 | +e.z j as I 42.7s \ 42.s I az.zs I +z I at.t 6."is i- 6.;-l uo* T *f -i;g-oi[ igif sg i--t * - -f--- ---- - -j- 1--- 86 i as.o I as,z 1 e+.e I sa.+ I uo j as.o Gi;l 1277s]1 u;7,,ro tzt.z irzo.os oi- i , rzo.t rol ilirr I rzs.s l j ris--T res tzqt ,r"-J 'o{ i'*l;i.1 -rlg--@-r:q 153 152.4 15i.75 l- *' l19o I r50.4 i-[.ealr1qlJ-r11r 11a9.75 i 149.1 I 148 '102.9 I 102.4 I 101.9 I 101.4 i 101 1100.55 I 100.1 I 99.6 I 151.1 - ^^;;- i ^^^- l-^^. - -- .. , -:^ ^^- I * ?337P_ 2326 , ?31 I 23oe 22ee 22e -_228_ l 4! 415.6 | 414.1 Table 3 t-t, m'10-3 1.890 [o, 1 -rolR Tw n 0.81 0.82 n oe 0.84 0.85 0.86 0.87 O.BB m.10-3 Nm-2 '1.326 0.2984127 4275 108.332105.495102.745 100.08 97.693 95.182 92946 90.582 1 B9o I 1.28 ) Os42s2B1 4.562 98.150 95.239 92.425 89.705 87.199 84.775 oz.J to 79.938 1.890; 1134 04 5000 I at
N - 'r'c < q .'I (D l9 z € 'table 4 I ro+ i u..o t' 4199.5 To+ , ^0.83 K5 1.77 | 4174.4 4ffi2.3 -___-'-.--''-.-.- 1.54 I 4603.9 5191 .7 383 I 5159.7 -;o* 5687 | sezs i s oo 5940.9 i q.a6 sso7.7 3.BB I ,tnrtl l '-l-68s33 j-15;-[-*ou asoo l-a+o: il ,- -'|J*t r91 __;ioo tT;;, rr* 1.50 l;tJI- o 1-t** - - "u 1:-'--- [- ort I ?4ss2 o.2o I z+or.s T 1.42 'l szsl .z o/o I naouu 2.n I 6814.6 2.65 6789.6 i 3.00 67ffi.2 1 3.34 1.67 i 8344.5 I 1.83 e3sd Le5 G23 qi1__iJ443.6_J_o zs 1.05 7402,8 i;t-]lm5.-T-l ,tr1,ir4ol r" 9375 9253.3 1.30 9247.9 i 1 .35 147 i 9235.1 1 tr,A i 1.49 9232.3 | 1.52 9230.7 10.44 | 39951 4574.5 | 11940 i 2.71 T*-.-_-t . ^. 1.74 | rcras i r.as i rsres I t.zz 5100.7 5810.9 s.sz I 4098.7 *t-T_*.'rs rer. ]-ll-d-i?qrrf=-- 10r92 | r.gz I rozos i 13344 i 1.67 | 13405 i Eolls _l_3 9q _l_ru:n, 'r5s1o 5072.4 i 1.45 2.03 2!s6 l J qq __r _?_l!P!_j_J]8 1.52 | 29379 I 0.01 2qnj1 1 5q l ao297 | 314 6.87 iatstsl a.ot 4241s T _L _s_ql_ _f3286 _1.06 2.082 i 2.055 2.270 2.524 z.tJ I s.+o i rsoro I, q.oz aLrgulg;e -,--&_ilr-G 6739.2 3.72 - 1r044-I- 3s1 zt7z2 I __gt_, 0.95
Page 2 and 3: YU ISSN 0354 - 8996 lll I I voLUME'
Page 4 and 5: though there were also published ar
Page 6 and 7: COMMANDING PARAMETERS constructlve
Page 8 and 9: 30,0 FcL 25,0 t25 A. P= 01,/Po _,1
Page 10 and 11: -l [- rf- iitlrll llili llll-l L _l
Page 12 and 13: {rtcrial prclucral : l5 Cr08 K-70"
Page 14 and 15: a I ;T_r -ra _ _l-.-rx.,'0!.$/d i_
Page 16 and 17: - t--lr-lillli i I lL--iL --] r E t
Page 20 and 21: c) The average percent:rge error re
Page 22 and 23: perature;4 VEarethecriteriaof simil
Page 24 and 25: f--r t1 tl tl I C) E. LU a trJ E [-
Page 26 and 27: l, (.i, r.)1, Ilrl. llD- 1 45 1 _4n
Page 28 and 29: Fig. 1. The basic groups of sealirr
Page 30 and 31: sign parameters. They represent the
Page 32: [5.) Clilds D. I]t., Nohtt A.5., Ki

No. 1, 1998 - Tribology in Industry

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