Lesson 4 Radiographic Testing Principles
In passing through the material, which two things may happen to the X and gamma radiation?
ANSWER Totally attenuated or totally passed through.
Radiation that is transmitted completely through a material will produce:
ANSWER the radiographic image.
Radiographic film images showing a lighter area on the image indicate:
ANSWER more dense areas in the part or thicker areas of the part.
Radiographic film images showing a darker area on the image indicate:
ANSWER less dense areas in the part or thinner of the part.
The term attenuation is the same as ___ of radiation?
ANSWER absorption.
Geometric unsharpness is what type of shadow?
ANSWER Umbra.
Geometric unsharpness can be reduced by:
ANSWER a small source size, large distance from the source, and small distance of the test
object to the film/imaging plate/detector.
X-rays and Gamma Rays have each of the following characteristics except:
ANSWER have an electrical charge and large mass.
X rays and gamma rays overlap on the:
In passing through the material, which two things may happen to the X and gamma radiation?
ANSWER Totally attenuated or totally passed through.
Radiation that is transmitted completely through a material will produce:
ANSWER the radiographic image.
Radiographic film images showing a lighter area on the image indicate:
ANSWER more dense areas in the part or thicker areas of the part.
Radiographic film images showing a darker area on the image indicate:
ANSWER less dense areas in the part or thinner of the part.
The term attenuation is the same as ___ of radiation?
ANSWER absorption.
Geometric unsharpness is what type of shadow?
ANSWER Umbra.
Geometric unsharpness can be reduced by:
ANSWER a small source size, large distance from the source, and small distance of the test
object to the film/imaging plate/detector.
X-rays and Gamma Rays have each of the following characteristics except:
ANSWER have an electrical charge and large mass.
X rays and gamma rays overlap on the:
