Standard Digital Reference Images for Appearances of Radiographic Images as Certain Parameters are Changed

Importancia y uso:

4.1 These reference images are intended as examples of how radiographic parameters affect the radiographic image. The use of these images in determining acceptance of production components is not intended or recommended.

4.2 A key consideration with any radiographic system is its contrast resolution and spatial resolution capability (that is, sensitivity). The degree of obtainable sensitivity with a given system is dependent upon several radiographic parameters such as source energy level, detector type, and material thickness radiographed. These reference images permit the user to estimate the degree of sensitivity change that may be obtained when these parameters are varied from a specific technique. This standard may also be used in conjunction with Test Method E1815 or with Practice E746 or Practice E1735 to provide a basis for developing data for evaluation of a user's specific system. This data may assist a user in determining appropriate parameters for obtaining desired degrees of radiographic system sensitivity.

Subcomité:

E07.02

Volúmen:

03.04

Palabras clave:

discontinuities; film systems; gamma rays; reference radiographs; steel; unsharpness; welds; X-ray;