What is film interpretation?
Interpretation of radiograph is the analysis of the shadow image formed on the film by radiation transmission pattern of the test specimen. The image is evaluated in terms of internal and external discontinuities of the specimen. Supporting information such as radiography test parameters, part geometry etc.
How do you interpret RT film?
Interpretation of radiographs takes place in three basic steps: (1) detection, (2) interpretation, and (3) evaluation. All of these steps make use of the radiographer’s visual acuity. Visual acuity is the ability to resolve a spatial pattern in an image.
What is ip in a weld?
Incomplete penetration (IP) or lack of penetration (LOP) occurs when the weld metal fails to penetrate the joint. It is one of the most objectionable weld discontinuities.
What is mottling in casting?
Mottling is a radiographic indication that appears as an indistinct area of more or less dense images. The condition is a diffraction effect that occurs on relatively vague, thin-section radiographs, most often with austenitic stainless steel.
What is the acceptance criteria for RT?
Following terminologies have been used to explain the acceptance/rejection criteria for Radiography Test (RT); Linear Indication: Any indication with a length greater than three times the width. Linear indications are mainly cracks, lack of penetration, lack of fusion, and elongated slag inclusions.
Which of the following welding discontinuities would be most difficult to image radiographically?
Cards
| Term Increasing the kV setting on an X ray machine increases the: | Definition Penetrating power |
|---|---|
| Term Which of the following welding discontinuities would be most difficult to image radiographically: | Definition Lack of side wall fusion |
What is scattered porosity?
Discontinuity; small cavities that appear throughout the entire weld.
What is porosity in welding?
Porosity is the presence of cavities in the weld metal caused by the freezing in of gas released from the weld pool as it solidifies.
What is filamentary shrinkage?
Filamentary shrinkage results in a network of continuous cracks of various dimensions and densities, usually under a thick section of the material. It can be difficult to detect, and the fracture lines tend to be interconnected. They are typically thinner and less dense than filamentary cracks.
What is cast radiography?
May 09, 2017 / Haworth Castings/ Adam Richards. Radiographic imaging is a popular technique used to identify any subsurface defects in metal castings. It provides assurance of the structural and mechanical properties of the component.