Youtor
UT Level 2 Promotion October 2024
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=WhHlhZXwrX4
Promotion Discounted Price for UDEMY UT Level 2 Course • Use this link: • https://www.udemy.com/course/ut-level... • Valid until 06.11.2024 10:12 PST (GMT -8) • This UT Level 2 course is the next level of training in Ultrasonic Testing and Inspection. • It is again a practice-oriented training program, which means that in addition to the theoretical side of UT, you will also get a kind of “hands-on feeling” through the practical demonstration videos using an ultrasonic testing instrument. • As with the UT 2 course offered by the official certified training facility, this course will also contain a summary of important topics that were explained in detail in the Level 1 course. However, in this Level 2 UT course I provide a deeper insight into the different topics. • For example: I have used an EXCEL based program that allows to visualize the sound beam based on the parameters (sound speed, frequency and effective piezo electric element diameter). • In general, the focus of the UT Level 2 course is on defect sizing. For better understanding, I use practical tests to explain how the amplitudes of defects of the same size change depending on their distance and why. • The question of the smallest detectable defect size is also discussed in the context of explaining the wavelength λ. • Through some practical experiments, the influence of the sound beam and geometry-related reflection effects is shown. Here you will learn about the amplitudes sometimes occurring in the A-scan that can confuse the NDT operator. These insights also help to select a better probe for a specific application. • The use of angle beam probes, also known as shear wave probes, is discussed in detail. Their design, behavior at interfaces, effects on the longitudinal wave, also called compression wave, and the transversal wave, also called shear wave, as well as the law of refraction or Snellius law are discussed in detail. • The most commonly used reference reflectors SDH (side drill hole) and FBH (flat bottom hole), which are used as comparison reflectors for natural flaws (also called discontinuities), are explained in the context of their sizing methods DAC and DGS (also known as AVG in German) using a flaw detector, calibration blocks V1 and V2 and the DGS diagram. • Preparation for a realistic inspection (flaw detection on a T-weld joint) is explained in detail as an example, including the creation of the DAC curves in a practical video. • The use of the V1 and V2 calibration blocks is explained in the context of calibration and a practical video shows the differences between a manual and automatic calibration on a V2 calibration block. • The DAC and DGS (AVG) sizing methods with their advantages and disadvantages are explained. The development of the DGS (AVG) diagram and the creation of such curves in the flaw detector as well as the use of pre-stored curves are discussed as users often do not fully understand the background. • A series of practical tests are shown where we use a custom-made test block with circular reflectors (flat bottom holes) inserted at different angles and depths to check the correctness of the DGS diagram and the DGS function of the instrument. Finally, all results are evaluated and discussed. • The last session explains the use of the DGS (AVG) function, starting with the UT system calibration, the procedure for creating the DGS (AVG) curves based on a back wall reflection amplitude acquisition from the V2 calibration block and finally checking the correctness of the results. Here the aim is also to get an idea of the possible tolerance for the DGS (AVG) method for defect sizing. • A practical demonstration video shows the whole procedure. • At the end, some important topics related to correction values to the gain in dB are also explained. These correction values depend on the probe design (size of the piezo element, frequency, angle) and the calibration block used. A further correction value transfer correction relate to the possible differences in sound attenuation and surface roughness of the calibration block and the test object. • Within the course you will find several examples for certain mathematical functions used in UT along with some tests for you. Every single session also includes a Quiz, so that you can check yourself to what extend you understand the different subjects. • And now have fun learning UT with this Level 2 course!
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