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Questions and Answers
What is the objective of Lab 2.2?
What is the objective of Lab 2.2?
To deal with various techniques for non-destructive material testing using ultrasound.
What are the main types of ultrasonic waves?
What are the main types of ultrasonic waves?
- Transverse wave (correct)
- Electromagnetic wave
- Longitudinal wave (correct)
- Sound wave
High frequency sound waves can propagate through a vacuum.
High frequency sound waves can propagate through a vacuum.
False (B)
What does the term 'Ultra' refer to in ultrasonics?
What does the term 'Ultra' refer to in ultrasonics?
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Ultrasonic testing can visualize __________ defects in materials.
Ultrasonic testing can visualize __________ defects in materials.
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What types of devices are used in the experiments for ultrasonic testing?
What types of devices are used in the experiments for ultrasonic testing?
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Study Notes
Lab Overview
- Lab 2.2 focuses on non-destructive material testing using ultrasound to identify defects and measure geometric dimensions of components.
- Applications include detecting macroscopic material defects such as pores, cracks, and inclusions, as well as measuring wall and coating thicknesses.
- Utilizes handheld ultrasonic sensors and automated testing devices for experimentation.
Ultrasonic Testing
- High-frequency sound waves characterize internal structures without damaging materials.
- Sound acts as a mechanical wave produced by vibrations of particles in various mediums (solid, liquid, gas).
- Frequencies above 20 kHz are classified as "ultrasonic," beyond human hearing ability.
- Wave propagation involves particle vibrations around a resting position which transfer motion to adjacent particles.
- The propagation speed of sound is termed as "speed of sound (c)," varying by the medium.
Types of Waves
- Two main types of ultrasonic waves:
- Longitudinal Waves: Particles oscillate parallel to the wave propagation direction.
- Transverse Waves: Particles oscillate perpendicular to the wave propagation direction.
Experimental Focus
- Wall thickness and defect location determination are key experiments within this lab.
- Calibration of sound velocity is essential for accurate measurements.
- Includes automated robot-based testing solutions for efficiency and precision in material inspection.
Additional Topics
- Acoustic microscopy as a method for enhanced imaging of material structures.
- Phased Array ultrasonic technology to facilitate advanced testing techniques and data acquisition.
Contact Information
- Prof. Dr.-Ing. Robert Schmitt leads the Chair of Metrology and Quality Management, overseeing the lab and research initiatives.
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