8: Viewing Radiographs Flashcards
1
Q
Unwanted inclusions in a part will appear on a radiograph as what?
A
A light or dark spot/area, depending on the relative absorption ratio of the part material and inclusion material
2
Q
Prior to use and after a brief warmup time, a digital transmission densitometer is…
A
Calibrated against a master density strip
3
Q
Non metallic weld inclusions are generally termed what?
A
Slag
4
Q
The star shaped defect occurring in the depression formed at the end of a weld bead is called a what?
A
Crater crack
5
Q
A film permitting 1% of the incident on it to be transmitted is said to have a density of what?
A
2.0
6
Q
When viewing a radiograph, the lighting in the viewing room should be what?
A
Subdued
7
Q
A radiograph with excessive overall density is probably a result of what?
A
Over exposure
