Film Speed/ Factor - NDT
Jun 20, 2015 · Film Factor by definition is: Amount of Exposure (R) per unit area of the Film required to produce a desired optical density. And Inverse of Film Factor is Film Speed. Unit of Film Speed is 1/R. Now Optical Density shall also depend on film processing conditions like dark room arrangement,fog density, temperature of processing chemicals etc.
Class I: low speed, very high contrast, very low graininess. Class II: medium speed, high contrast, low graininess. When the objective is to detect “very small” defect in weld, it is a common practice in the industry that Class I films (Agfa D4 and Fuji IX 50) or slower speed films (D2) are used carbon and stainless steel welds and casting.
Re: Film Speeds - NDT
Jan 22, 2005 · I find the film speeds on the charts provided with the exposure calculators are not always what works best in the field. I think this guide could help everyone. Include any type and brand of film you like and say whether it is manual or automatic processing.
image quality estimating for radiographic film s used in NDT (nondestructive testing) depending on the quality of the films, as well as information concerni ng film classification methods.
Agfa film - NDT
Apr 21, 2015 · The film system class is defined by ISO 11699-1 worldwide, the AGFA film type which falls in this class is called AGFA Structurix D7 (name comes from the mean grain size of 700 nm). So AGFA D2 has 200 nm grain size and is film system class C1.
These standards identify the various types of industrial X-ray film systems and classify them based on objectively quantified parameters that are the foundation of film imaging performance.
ENHANCED FILM-SYSTEM TECHNOLOGY FOR INDUSTRIAL …
With this enhanced film-system technology, a complete assortment of films differing in speed can be processed in the automatic processing machine, even in hardener-free processing solutions.
Exposure time formula for radiography - NDT
Jul 18, 2018 · Acctually, Agfa doesn't used film factor of D4 is 1, Agfa uses D7, Fujifilm uses IX100, CareStream uses AA400 for their reference factor. Regards
Re: D7 Film with Gamma - NDT
Apr 17, 2019 · AGFA D7 is a system class C5 film according to ISO 11699-1. If you make radiographic inspection according to testing class B and ISO 5579 or ISO 17636-1, than film system class C5 is NOT sufficient for testing class B even when using isotopic radiation sources.
Review of Film System Technology - State of the Art - NDT
The present German directive (Anhang 53) relating to industrial radiography lays down the maximum amount of silver freight in the rinsing water of a processor to 50 mg Ag/m 2 processed film for film consumption between 3000 and 30.000 m 2 year. Agfa has taken this German directive of silver freight of 50 mg Ag/m 2 as target, since: