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发表于 2013-9-11 10:13:02
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T-282.2 Density Variation
(a) The density of the radiograph anywhere through the
area of interest shall not
(1) vary by more than minus 15% or plus 30% from
the density through the body of the designated hole-type
IQI adjacent to the essential hole or adjacent to the essential
wire of a wire-type IQI, and
(2) exceed the minimum/maximum allowable density
ranges specified in T-282.1.
When calculating the allowable variation in density, the
calculation may be rounded to the nearest 0.1 within the
range specified in T-282.1.
根据上述的规定,以像质计处的黑度为基准,低不能低于15%,高不得超过30%。 |
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