13th International Conference on Fracture June 16–21, 2013, Beijing, China -4- was estimated by the deconvolution technique. All AE waveforms were analyzed by this inverse method and obtained impact force values were discussed. 0 1 2 3 4 0 200 400 600 800 1000 vertical radius horizontal radius Bubble radius [mm] Time Figure 3. Transition of bubble radius and detected AE waveform in set-up (a)-2 ( laser energy: 100mJ, water temperature: 25.1°C) [µs] 0 [μs] 257 [μs] 514 [μs] 942 [μs] 800 [μs] 29 [μs] 486 [μs] 657 [μs] -200 -150 -100 -50 0 50 100 150 200 0 200 400 600 800 1000 Voltage [mV] Time Time [μs] Time [μs]
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