Non-destructive testing (NDT) is an essential component in industrial sectors that require high safety and quality standards. These methods allow the structure of materials and components to be examined without compromising their integrity, thus ensuring their safe and efficient use. Among the different NDT methods, the ultrasound-based (UT) one stands out for its ability to inspect the volume of the examined object without dangers from radiation and the like.
How does the Ultrasound Method (UT) work?
The ultrasonic method uses high-frequency sound waves to investigate the internal characteristics of materials. These waves, generally between 1MHz and 10MHz, are generated by a transducer that sends them through the material to be examined. When the waves encounter a discontinuity, such as an internal defect or a change in material, part of the waves is reflected and returns to the transducer, while the rest continues its path. By analyzing the time it takes for the waves to return and their intensity, it is possible to determine the location, size , and nature of the defects.
UT Process Steps
Preparation: Before the test begins, the surface of the material must be cleaned and prepared. A gel or bonding liquid is applied to ensure that the ultrasonic waves are effectively transferred from the transducer to the material without dispersing into the air.
Emission and detection: the transducer, placed in contact with the surface of the material, emits ultrasonic waves that travel through the material. When waves encounter an interface, such as a defect, they are reflected back toward the transducer.
Data analysis: Reflected waves are analyzed by an electronic system that creates an image or graph, known as an A-scan, B-scan, or C-scan. These graphs help identify any discontinuities or anomalies in the material.
Interpretation: Interpreting data requires specific skills, as it is necessary to distinguish between reflections caused by defects and those due to natural characteristics of the material.
Applications of the ultrasonic method
The UT method is widely used in a variety of industries, including aerospace, oil and gas, automotive, shipbuilding , and construction. Applications include:
Defect detection: Identification of cracks, inclusions, sticks , and porosity within metallic and non-metallic materials.
Thickness measurement: Checking the thickness of pipes and tanks to prevent the risk of leakage or breakage.
Course: Non-destructive testing Ultrasonic Method (UT) 2nd level
CR Inspection, accredited by ACCREDIA as a Certification Body for Non-Destructive Testing Personnel, organizes a second level advanced course on the Ultrasonic Method (UT). The course will be held in October, online for the theoretical part and at our headquarters for the practical part, with the possibility of booking and also taking the qualification exam, which will be held at our headquarters in November 2024.
OBJECTIVES
The course aims to provide in-depth knowledge on the UT method, focusing on:
> Theoretical principles of ultrasound: study of the fundamental concepts of ultrasound applied to non-destructive testing.
> Instrument calibration and setup techniques: hands-on training on the proper use of UT equipment.
> Analysis and interpretation of results: development of skills for reading and interpreting the data collected.
INFO AND REGISTRATION
To register for the course, fill out the form on the page: https://crinspection.it/corso-formativo-controlli-non-distruttivi-metodo-ultrasuoni-ut-2-livello/