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Olson - Ultrasonic Pulse Velocity (UPV) System
Ultrasonic Pulse Velocity (UPV) investigations are performed to assess the condition of structural members if access to both sides is available. Sonic Pulse Velocity (SPV) is performed on mass concrete over 10 ft (3 m) thick. The Ultrasonic Pulse Velocity (UPV) systems are designed to identify and map voids, honeycomb, cracks, delaminations, and other damage in concrete, wood, masonry, stone, ceramics, and metal materials. UPV tests are also performed to predict strength of early age concrete. The UPV methodology relies on direct arrival of compressional waves.
The test is performed by positioning the source and receiver on either side of the area in question, then the source sends a compressional wave through the region, and the receiver records the full waveform on the other side. The position of the two transducers can be varied such that direct, semi-direct, and indirect tests can be performed, which aids in mapping out the volume of the defect. Further tests can be performed if the user wishes to generate a 3-D rendering of the volume in question. This is done by testing many different “paths” through the medium and then using Tomographic Imaging Software, which is sold by Olson Instruments. (Note: Optional Tomo software is available for the CSL, UPV, and CS/DS add-on test methods.)
- Beams
- Bridge Decks
- Elevated Slabs
- Shaft Tops
- Walls
- Cracks
- Delaminations
- Honeycomb
- Velocity vs Strength Correlation with Cores
- Voids
- ASTM C597-02
- E494-95
- BSI 98/105795
- 228.2R
- Short learning curve for data acquisition and basic processing
- Waterproof in shallow water ~ 50 KHz UPV transducers standard
- System is compact, durable, and easily transported allowing for multiple tests per day
- 2-D maps are easily generated from data by exporting the tables from Olson`s WinUPV Software into Excel
- Using optional Tomographic Imaging Software, images can be generated from acquired data giving the user a 2-D or 3-D visual tool of the region in question
- English or Metric units can be used
- Ultrasonic Source and Receiver Transducers are fully interchangeable
- Real-time waveform display while testing