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Ultrasonic investigations of Glass samples

University of Houston. Ultrasonic investigations of Glass samples. By N. Dyaur. June 7, 2010. Ultrasonic pulls transmission technique for Velocity measurements. Transducers: Central frequency of P- and S-wave - 1MHz. Device: Transducer and specimen holder. Digital Oscilloscope.

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Ultrasonic investigations of Glass samples

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  1. University of Houston Ultrasonic investigations of Glasssamples By N. Dyaur June 7, 2010

  2. Ultrasonic pulls transmission technique for Velocity measurements. Transducers: Central frequency of P- and S-wave - 1MHz Device: Transducer and specimen holder Digital Oscilloscope Pulser-receiver Waveform on computer monitor Specimen

  3. Pulse-transmission technique Pulse-echo technique

  4. Shear waveform for Blank Glass sample

  5. CV CV Comparison of Waveforms of Shear wave for three orthogonal directions of blank glass sample. G1 is the shortest distance and G3 is the largest distance. S-G-arrow show first point of arrival of S-wave.

  6. Glass sample 1 (GS1) with inclusion of layered laser bubbles Inclusion: 26 x 48 x 48 mm Glass : 79 x 149 x209 mm 1 mm

  7. Spectrum of Shear wave . Blank Glass.

  8. Pictures of Glass sample 1 (GS1) 48 mm 209 mm 1 mm

  9. Velocity of Compressional wave in the Glass sample 1 with included layered zone. Position of transducers and related velocity of p-wave (f= 1.MHz) CV CV

  10. Comparison of measured velocity and estimated velocity for glass inclusion and inclusion zone. Sample GS1. CV CV Difference in velocity for layered zone depending on direction CV Zone Changes in velocity in % CV

  11. CV Comparison of maximum Amplitude in first arrival Amplitude in Glass and Glass +Inclusion Zone . CV CV

  12. Glass sample GS1 Layers in zone on laser bubbles inclusion. Orientation of laser bubbles in layer (red arrow) 1 mm

  13. View in direction of orientation of laser bubbles. Glass sample GS1. 1 mm

  14. Structure of laser bubble Layer. Glass sample GS1. 1 mm

  15. Thank you!

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