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UL 2556! o% m+ L, a" \3 K' p1 f
4.2.4 Preparation of specimens
2 ~; R# w: f( A0 U4.2.4.1 Sample selection and number of specimens4 v7 C# H; N+ O
Samples shall be taken from a wire, cable or cord, finished or during manufacture, at any time following
5 K* w' J2 U: u4 O* a- {curing of the compound, where applicable.
5 C2 V) @0 ^9 r ~6 L4 `A minimum of six specimens per sample shall be tested ²as received² and after accelerated aging or liquid/ Q: O. p- u0 X, F) n2 F
immersion. If the specimen breaks outside of the gauge marks or the grips of the mechanical2 G# g/ J3 M3 E$ @/ X
extensometer at a value below that specified as the acceptable minimum, the test results shall be
1 [- Q! \ h; Q jdisregarded and the test shall be repeated with another specimen.
" X6 g$ I6 M: O) ^; W. \3 w% U5 p& C( N1 ^
要求最少取6個樣板. |
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