Which type of ultrasonic wave has particle motion parallel to the direction of wave propagation?
Asnt Ndt Iii Ut Principles Physics
Question · Easy
Which type of ultrasonic wave has particle motion perpendicular to the direction of wave propagation?
Approximately what is the longitudinal sound velocity in steel?
Question · Medium
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What is the wavelength of a 5 MHz longitudinal wave in steel where v = 5,920 m/s?
Acoustic impedance (Z) of a material is the product of:
At a normal-incidence interface between two materials, reflection is highest when:
Snell's law for refraction at an interface is correctly stated as:
The first critical angle is the incident angle at which:
The second critical angle is the incident angle at which:
Mode conversion at an interface most commonly occurs when:
Calculate the near-field length N for a 10 mm diameter, 5 MHz longitudinal probe in steel (v = 5,920 m/s).
Question · Hard
In the near-field (Fresnel zone) of a transducer, sound pressure amplitude:
Beam spread in the far-field of a circular transducer is approximately characterized by:
Attenuation of an ultrasonic beam in a solid is caused mainly by:
An increase in test frequency typically:
A Rayleigh (surface) wave penetrates approximately:
Lamb waves propagate in:
The frequency of an ultrasonic wave generated by a transducer is determined primarily by:
If wavelength in a material is 2 mm and the velocity is 6,000 m/s, what is the frequency?
Decibel difference between two signal amplitudes A1 and A2 is calculated as:
A dual-element (TR) transducer is most commonly used for:
Asnt Ndt Iii Ut Equipment Transducers
An angle-beam contact transducer typically generates a refracted shear wave in steel using:
A focused immersion transducer is primarily used to:
A phased array (PAUT) transducer is composed of:
A heavily damped (broadband) transducer is preferred when:
Which is NOT a typical function of an ultrasonic pulser-receiver?
The main purpose of a couplant in contact ultrasonic testing is to:
Glycerin is preferred over water as a couplant when:
Which piezoelectric material is used in many general-purpose contact transducers because of its low cost and good sensitivity?
An EMAT (electromagnetic acoustic transducer) generates ultrasound through:
Which transducer property is most affected by the wear plate?
A delay-line transducer is most useful for:
Which factor most directly determines the angle of refraction in the test part for a contact angle-beam transducer?
What does the term 'beam index point' on an angle-beam transducer refer to?
An angle-beam transducer marked 'AWS 70°' is intended to produce a refracted:
Which transducer would be most appropriate for inspecting a 3 mm thick aluminum sheet for lack of bond in a thin honeycomb panel?
The IIW Type 1 (V1) calibration block is most commonly used to:
Asnt Ndt Iii Ut Calibration Standards
The IIW Type 2 (V2) block is most commonly used for:
The Distance/Sensitivity Calibration (DSC) block is primarily used for:
Per ASME Section V Article 4, the basic calibration block for weld UT must match the production part in:
DAC (Distance-Amplitude Correction) curves are constructed by:
Time Corrected Gain (TCG) differs from a DAC curve in that TCG:
An AVG (DGS) diagram correlates:
Per ASME Section V Article 4, calibration verification is typically required:
If a calibration check at the end of a shift shows the reference response has dropped by 20% or more, ASME Section V generally requires:
Side-drilled holes (SDHs) in a calibration block are most commonly used because:
A notch in a basic calibration block is most often used to:
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