Ultrasonic Through-Transmission Calculator
Explore our collection of user-friendly Ultrasonic Testing (UT) Calculators, designed to simplify your nondestructive testing calculations. Whether you’re determining material thickness, time of flight, velocity of sound, or other critical parameters, our interactive tools provide accurate results for professionals and enthusiasts alike. Tailored for common materials like steel, aluminum, water, and acrylic, with options for custom velocities, these calculators support both pulse-echo and through-transmission methods.
Ultrasonic Through-Transmission Calculator
Example of Through-Transmission Calculation:
The through-transmission method measures material thickness by analyzing the one-way travel time of an ultrasonic pulse between two transducers. Unlike pulse-echo (which involves a round trip), this method uses a direct path. The formula is:
Thickness (t) = Time of Flight (TOF) × Velocity of Sound (c)
Scenario:
Two transducers are placed on opposite sides of a plastic sheet with a sound velocity of 2400 m/s. The thickness of the sheet is 15 mm. Calculate the time of flight (TOF).
Step 1: Convert Thickness to Meters
Ensure unit consistency:
15 mm = 0.015 m
Step 2: Apply the Correct Formula for TOF
Through-transmission measures a one-way path, so:
TOF = Thickness (t) / Velocity of Sound (c)
TOF = 0.015 m / 2400 m/s = 0.00000625 seconds (6.25 μs)
Step 3: Verify Thickness Using TOF
Reverse the calculation to confirm accuracy:
Thickness (t) = TOF × c = (6.25 μs) × 2400 m/s
Convert microseconds to seconds: 6.25 μs = 6.25 × 10⁻⁶ s
t = (6.25 × 10⁻⁶ s) × 2400 m/s = 0.015 m (15 mm)
Conclusion:
For a 15 mm-thick plastic sheet, the ultrasonic pulse takes 6.25 microseconds to travel directly through the material. The calculated thickness matches the actual value, validating the method.