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各位同学，
! B2 a4 c+ h' \2 W7 Z" Q p, b! o' z* AUL1598,第16章垫片加速老化测试，评估垫片的张力和伸长率，各位是用多大的力去拉的？
; i$ L- |6 e1 u5 r1 Q+ J( t) k6 v7 G! f0 f: |
16.5.9 Gasket accelerated aging (Method A)
& y% u- [/ ?, x16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test. t7 H* e- O7 y3 S
16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and& Z6 T+ |* A0 [7 N" |
elongation, and the average values calculated.1 | z2 m2 w5 @! z+ ]6 f
16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a. }' n) W4 k9 v6 N
temperature 20 °C above the maximum gasket or bushing temperature as determined by the normal
& H T0 a, p1 z' n' i/ @" W4 vtemperature test of Clause 14.
$ X" c5 D( W" K" N4 S0 B/ }' a16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60
) P+ b# t' k- k" Ypercent and an average elongation of not less than 75 percent of the values determined before6 `3 W0 c. E2 e# k, r
conditioning.6 H" P& @; L+ M: g6 g: Z0 L
5 i. J" s8 [- f I谢谢！ ) ^9 j- C. ~4 N5 y( v
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