Flashcards in Radiographic Inspection Processes-UR Deck (20)
What is determined by the sharpness of the penetrameter holes?
According to military standards, what is the radiographic quality level if no specifications are available?
the penetrameter holes have sharp boundaries and give an abrupt change in metal ...
when using lead screens, where is the film placed?
between a pair of screens.
what determines the intensity of fluorescent light emitted by a fluorescent screen?
intensity of incident radiation
what is the function of the diaphragm in radiography?
confines the primary beam
by applying geometric factors to your radiographic images, you are able to control distortion, sharpness, and degree of ...
which geometric factor is not controllable by the operator?
(A) Source to object distance
(B)X-ray beam alignment
(C) Energy source size
(D) Plane alignment
C. energy source size
what is the name of the graph showing the relationship between material thickness, kilovoltage, and exposure?
what aid is prepared by making a series of radiographs of a step wedge?
why is it necessary to use a densitometer for making exposure corrections?
to establish a starting density from which to correct
the film characteristic curves are used to ...
compute exposure corrections
film characteristic curves show that M film is ...
(A) slower than K
(B) slower than AA
(C) faster than F
(D) faster than AA
B. slower than AA
the area-distance formula expresses what relationship?
Area covered by the primary beam increases as source-to-object distance increases
What type of defect is normally distinguished by dark continuous jagged or straight line throughout its length on a radiograph?
Which technique can pinpoint the location of a crack?
Which radiographic defect appears as smooth, consistent, light density areas that do not have a grainy or porous appearance?
water in honeycomb core
During welder certification, what type of defect automatically results in an unacceptable weld if it exceeds certain limits?
What items are required under the penetrameter when x-raying welding certification plates?