Localized detection of phase transition in tungsten by laser ultrasonics
| dc.contributor.author | Utegulov, Z.N. | |
| dc.contributor.author | Reese, S.J. | |
| dc.contributor.author | Farzbod, F. | |
| dc.contributor.author | Schley, R.S. | |
| dc.contributor.author | Hurley, D.H. | |
| dc.date.accessioned | 2015-11-03T04:25:41Z | |
| dc.date.available | 2015-11-03T04:25:41Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | We demonstrated a method for localized, furnace-free detection of the onsets of melting and ablation in polycrystalline tungsten using nanosecond laser ultrasonics. Pulsed laserinduced melting is characterized by a delay in the arrival of the shear wave with increasing laser peak intensity. Pulse-laser induced ablation was characterized by pronounced increase of the amplitude of the signal associated with the arrival of longitudinal acoustic wave. Both phenomena are attributed to a change in character of the ultrasonic source. The described technique suggests a new spatially resolved method for detection of metal-to-melt phase transition in refractory metals. | ru_RU |
| dc.identifier.uri | http://nur.nu.edu.kz/handle/123456789/672 | |
| dc.language.iso | en | ru_RU |
| dc.publisher | Nazarbayev University | ru_RU |
| dc.subject | first research week | ru_RU |
| dc.subject | innovative scientific research | ru_RU |
| dc.subject | laser irradiation | ru_RU |
| dc.title | Localized detection of phase transition in tungsten by laser ultrasonics | ru_RU |
| dc.type | Abstract | ru_RU |