Can you radiograph fillet welds?
Although Radiography and Ultrasonic Testing can be used on fillet welds with some success. They are typically limited to groove weld examinations. Visual, Magnetic Particle, and Liquid Penetrant methods are used typically to examine fillet welds.
What is NDT inspection for fillet welds?
Magnetic particle testing is specified for fillet and PJP welds in all but two categories. If desired, Magnetic Particle Testing (MT) should be used to test fillet welds. Ultrasonic Testing (UT) should not be specified for fillet welds.
What is radiography test for welding?
Radiographic Testing (RT) – This method of weld testing makes use of X-rays, produced by an X-ray tube, or gamma rays, produced by a radioactive isotope. The basic principle of radiographic inspection of welds is the same as that for medical radiography.
Can you ultrasonic test a fillet weld?
An ultrasonic technique using refracted longitudinal waves to test T-joint fillet welds is reported. The probability of detection of longitudinal (hot tear) cracks is quantified. Differentiation of longitudinal fillet weld discontinuities is indicated.
What is a fillet weld test?
A soundness test in which a fillet weld is broken by angling a fillet weld specimen onto a surface with the fillet weld pointing upward and applying force until the fillet weld fractures. Once fractured, the fracture surface is examined for incomplete fusion, porosity, and other internal discontinuities.
What is the purpose of inspection in welding?
Weld inspections are conducted for several reasons, the most common of which is to determine whether the weld is of suitable quality for its intended application. To evaluate the quality of a weld, you must first have criteria to which you can compare the weld’s characteristics.
Can fillet welds be UT tested?
Advice: NATA does not provide accreditation for ultrasonic test on fillet welds. AS 2207, an ultrasonic test method standard also does not cover Fillet welds in any of the normative sections.
What is a radiographic image?
Radiographic imaging describes different techniques for taking images that allow doctors to visualize the body’s internal structures. These tests are used to diagnose various heart conditions and disorders. Images produced by radiographic tests can be examined on computer monitors, printed or recorded electronically.
What kind of materials can be checked and tested with an eddy current tester?
The types of materials eddy current testing is commonly used to inspect include:
- Bores. Bolt hole bores, bores for in-use tubes.
- Welds. Welded joints, nozzle welds, friction stir welds.
- Tubes. Steam generator tubing, metal tubing.
How to choose the right radiographic inspection for welds?
But before opting for radiographic inspection of welds, it is recommended to consider the following three steps: Calibrate the instruments used in quality check to a known standard. Calibration helps in the accuracy and precision of the test results. Check whether if you require a combination of NDT techniques.
What type of inspection is used for butt welds?
Generally ultrasonic testing or radiographic testing applies to butt welds and penetrant testing or magnetic particle inspection applies to fillet welds.
Can a fillet weld show up in a radiography film?
Most radiographers will know that, but it is also fairly common for fillet welds to have insufficient penetration, depending on process, electrode size, and etc. So, in that case the film might show a large slag inclusion or void.
What is throat in Fillet welding?
The theorectical throat of a fillet weld is the intersection of the planes or welding surfaces being brought together. This is demonstrated by the numerous AWS sketches that are used to illustrate concave and convex fillet welds. If a weld has penetrated to that intersection and leg and weld face are OK, there is sufficient throat.