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Questions and Answers
What property of a medium determines its ability to support sound?
What property of a medium determines its ability to support sound?
- Density and temperature
- Frequency and period
- Elasticity and density (correct)
- Velocity and wavelength
Why can't sound travel in a vacuum?
Why can't sound travel in a vacuum?
- Vacuums amplify sound waves
- Sound waves lose energy in vacuums
- Vacuums absorb sound waves
- Vacuums lack the necessary medium for mechanical vibrations (correct)
What is generally accepted as the smallest possible discontinuity a probe can find?
What is generally accepted as the smallest possible discontinuity a probe can find?
- Elastic properties
- 1 Kilohertz
- Minimum detectability
- Half of one wavelength (correct)
Which property affects the velocity of sound in a medium?
Which property affects the velocity of sound in a medium?
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What is considered the most sensitive waveform for detecting discontinuities?
What is considered the most sensitive waveform for detecting discontinuities?
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Study Notes
Sound and Discontinuities
- The property of a medium that determines its ability to support sound is its elasticity and density.
- Sound cannot travel in a vacuum because it is a medium that lacks particles, and thus, has no elasticity and density to transmit sound waves.
- The smallest possible discontinuity a probe can find is generally accepted to be a planar defect, which is a one-dimensional defect.
- The velocity of sound in a medium is affected by its elasticity, density, and temperature.
- The most sensitive waveform for detecting discontinuities is considered to be the pulse-echo waveform.
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