Standard Digital Reference Images for Titanium Castings

Importancia y uso:

4.1 Personnel utilizing reference radiographs to this standard shall be qualified to perform radiographic interpretation in accordance with a nationally or internationally recognized NDT personnel qualification practice or standard and certified by the employer or certifying agency, as applicable. The practice or standard used and its applicable revision shall be identified in the contractual agreement between the using parties. If assistance is needed with interpreting specifications and product requirements as applied to the reference radiographs, a certified Level III shall be consulted before accept/reject decisions are made (if the Level III is the radiographic interpreter, this may be the same person).

4.2 These digital reference images are intended for reference only, but are designed such that acceptance standards, which may be developed for particular requirements, can be specified in terms of these digital reference images. The illustrations are digital images of castings that were produced under conditions designed to develop the discontinuities.

4.2.1 Applicability of Thickness Designations: 

4.2.1.1 The discontinuity types, illustrated thickness and applicable thickness range are summarized in Table 1 for the Volume I images and in Table 2 for the Volume II images.

4.3 Image Deterioration—Many conditions can affect the appearance and functionality of digital reference images. For example, electrical interference, hardware incompatibilities, and corrupted files and drivers may affect their appearance. The Practice E2002 line pair gauges located in each digital reference image can be used as an aid to detect image deterioration by comparing the measured resolution using the gauges to the resolution stated on the digital reference image. Do not use the digital reference images if their appearance has been adversely affected such that the interpretation and use of the images could be influenced.

4.4 Agreement should be reached between cognizant engineering organization and the supplier that the system used by the supplier is capable of detecting and classifying the required discontinuities.

Subcomité:

E07.02

Referida por:

F0629-24, F2895-24, E1320-20, E2007-10R23, E2736-17R22

Volúmen:

03.04

Número ICS:

35.140 (Computer graphics), 49.035 (Components for aerospace construction)

Palabras clave:

aerospace; digital reference image; discontinuities; investment castings; titanium; X-ray;