Ultrasonic Testing (UT) – Non-Destructive Testing
Quality control of welded joints and materials is crucial for assessing the work performed. To confirm whether a joint can be accepted in a given structure, non-destructive testing must be performed. Among the most popular and effective methods is ultrasonic testing. This is a non-destructive method in which phenomena caused by the propagation of ultrasonic waves are observed.
Ultrasonic testing (UT) is a volumetric method, meaning that it can detect discontinuities throughout the entire volume of the material. If the defect is not on the surface but inside the element, this method enables its detection.
Properly conducted professional ultrasonic testing (UT) is primarily non-invasive and does not damage the structure of the material being tested. The waves do not affect the material’s technical parameters. Therefore, this technique can be used to inspect finished constructions and components.
Do you need ultrasonic testing for your work? Are you looking for specialists with industry experience? Take advantage of Technic-Control Non-Destructive Testing Laboratory’s services and be assured that the testing will be carried out accurately and professionally. With extensive experience, a qualified team, and professional testing equipment, we offer the perfect formula for success.
How to Conduct Ultrasonic Testing of Welded Joints?
To perform non-destructive ultrasonic testing (UT), professional equipment is essential. At Technic-Control Non-Destructive Testing Laboratory, we use state-of-the-art devices that allow for precise evaluation of the quality of the tested material. Ultrasonic testing (UT) requires the use of ultrasonic probes equipped with a transducer. This transducer is a flat plate with piezoelectric properties, meaning it changes dimensions when subjected to an electric current. This process generates short, high-frequency vibrations. Nearly a million cycles are produced every second.
The ultrasonic flaw detector is responsible for receiving and processing the signal. There are various methods of ultrasonic testing, and at our company, we use the most effective methods: the echo method and through-transmission method. In the echo method, the device receives waves that return after reflection. The returning wave provides information about the detection of a defect or discontinuity within the tested element.
Key Advantages of Ultrasonic Testing of Welded Joints
Ultrasonic testing, which utilizes low-frequency sound waves, is widely trusted by both contractors and engineers due to its many beneficial features. As previously mentioned, one of the main advantages of ultrasonic testing is its non-destructive nature, made possible by the use of piezoelectric materials. This means that ultrasonic testing of welds can be performed without damaging the tested components.
The ultrasonic method (UT) is highly versatile and can be used in a wide range of applications, as well as for evaluating different types of materials. It is particularly effective in measuring the thickness of elements that are accessible from only one side. UT testing is fast, and the results are presented immediately. Another key benefit is the high accuracy of the results.
Ultrasonic testing of welded joints allows for the detection of discontinuities near the surface as well as at any depth within the tested element. It can detect defects in very thick materials that cannot be assessed using radiographic testing. The equipment used by Technic-Control Non-Destructive Testing Laboratory can detect even very small point defects as small as 0.5 mm, as well as surface-breaking defects starting from a depth of 0.1 mm. Additionally, the equipment can identify narrow gaps as small as 0.001 mm.
What Can Be Inspected Using the Ultrasonic Testing Method?
The ultrasonic testing (UT) method has a wide range of applications, allowing for the detection of point, linear, and extensive damage. It is primarily used to assess the quality of finished metallurgical products. With the help of specialized testing equipment, very precise measurements can be made on components that are difficult to access from the other side. The method enables dimensional checks and quality control of machine parts and even individual products made through plastic forming processes.
UT testing is frequently used for welded joints, and welders often recommend it for critical areas. The method allows for the inspection of the continuity of welded areas, as well as the internal structure of the weld. It can also assess the material preparation process and the course of the fusion boundary.
Ultrasonic Testing (UT) at Technic-Control Non-Destructive Testing Laboratory
Every client should prioritize the thorough execution of required tests on welded joints, as the results confirm the quality of the work performed. Therefore, ultrasonic testing (UT) should be entrusted to companies with the necessary qualifications, extensive experience, and the appropriate equipment for non-destructive testing. All these qualities can be found at Technic-Control Non-Destructive Testing Laboratory.
At our laboratory, specialists perform non-destructive testing with qualifications confirmed by the required certifications. The skills of our staff are recognized by maritime classification societies (e.g., Polish Register of Shipping), often more valued than UDT (Office of Technical Inspection) authorizations. Our employees have gained experience working on the largest industrial facilities both in Poland and abroad. Technic-Control Non-Destructive Testing Laboratory operates in the energy, shipbuilding, mining industries, as well as in various sectors of industry and construction.
For ultrasonic testing (UT), we use high-quality testing equipment. These are modern and highly functional tools that provide precise measurements. They can be used in a variety of conditions, and with additional accessories, testing can be performed even on hot objects like exhaust chimneys. For the most precise measurements, our equipment disregards the thickness of paint and allows for testing without the need for surface preparation.
If you are interested in ultrasonic testing (UT) of welded joints, contact the customer service department at Technic-Control Non-Destructive Testing Laboratoratory.
