Ultrasonic Test (Leaving Cert Engineering): Flashcards
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What is ultrasonic testing?
What is ultrasonic testing?
NDT method using high-freq sound waves to detect internal flaws
What does NDT stand for?
What does NDT stand for?
Non-destructive testing
Basic principle of ultrasonic testing
Basic principle of ultrasonic testing
Sound reflection and echo
What does UT send through material?
What does UT send through material?
High-frequency sound waves in pulse form
What happens when sound wave meets a flaw?
What happens when sound wave meets a flaw?
Reflects back early, creating detectable echo pattern
Device that emits & receives sound waves in UT
Device that emits & receives sound waves in UT
Transducer
Device that displays ultrasonic test results
Device that displays ultrasonic test results
Oscilloscope or display unit
Type of display showing echo patterns in UT
Type of display showing echo patterns in UT
A-scan display
What does crack echo indicate?
What does crack echo indicate?
Reflection from an internal flaw or defect
What does back surface echo confirm?
What does back surface echo confirm?
Wave reached the material's far surface
Main advantage of ultrasonic testing
Main advantage of ultrasonic testing
Non-destructive - components remain usable after testing
Critical limitation of ultrasonic testing
Critical limitation of ultrasonic testing
Skilled operators required for correct interpretation
Four application areas of ultrasonic testing
Four application areas of ultrasonic testing
Railway, aerospace, manufacturing, power generation
Materials UT works with
Materials UT works with
Metals, plastics, ceramics, and composites
Sensitivity advantage of ultrasonic testing
Sensitivity advantage of ultrasonic testing
Can detect very small internal flaws