GB/T 23901.4-2019: Non-destructive testing -- Image quality of radiographs -- Part 4: Experimental evaluation of image quality values and image quality tables

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Scope

This Part of GB/T 23901 gives instructions for the determination of image quality
values and image quality tables.
This Part applies to the experimental evaluation of image quality values and
image quality tables during radiographs. If the IQI requirements specified in
GB/T 23901.3 cannot be used because, for example, the absorption coefficients
of the IQI material and the inspected material differ by more than 30 %, test
exposures are necessary to determine acceptance of image quality values. The
image quality values achieved by the test exposures are suitable for testing the
object under the same radiographic conditions.

Basic Data

Standard ID	GB/T 23901.4-2019 (GB/T23901.4-2019)
Description (Translated English)	Non-destructive testing -- Image quality of radiographs -- Part 4: Experimental evaluation of image quality values and image quality tables
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J04
Classification of International Standard	19.100
Word Count Estimation	6,631
Date of Issue	2019-06-04
Date of Implementation	2020-01-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration