"[80804F5A1864]" . "Experimental system for nanosecond laser melting investigation was developed containing three independent noncontact methods: infrared radiometry, time-resolved reflectivity of He-Ne laser and sample surface reflected KrF heating laser pulse. The system was applied to the investigation of laser melting of Cu, Mo, Ni, Si, Sn, Ti steel \u010CSN 15330 and stainless steel \u010CSN 17246 samples. For metallic samples the IR radiometry signal was transformed to temperature. Obtained surface temperature and reflectivity spectra in nanosecond time scale (10-1000 ns) for wide range of energy densities are presented. Interesting evolutions were found. Melting thresholds and melting durations were determined from the measured curves. The applicability of the methods is evaluated."@en . "0" . . . . . "Nanosecond pulse laser melting investigation by IR radiometry and reflection-based methods"@en . "Experimental system for nanosecond laser melting investigation was developed containing three independent noncontact methods: infrared radiometry, time-resolved reflectivity of He-Ne laser and sample surface reflected KrF heating laser pulse. The system was applied to the investigation of laser melting of Cu, Mo, Ni, Si, Sn, Ti steel \u010CSN 15330 and stainless steel \u010CSN 17246 samples. For metallic samples the IR radiometry signal was transformed to temperature. Obtained surface temperature and reflectivity spectra in nanosecond time scale (10-1000 ns) for wide range of energy densities are presented. Interesting evolutions were found. Melting thresholds and melting durations were determined from the measured curves. The applicability of the methods is evaluated." . "Semmar, Nadjib" . . . . "Z(MSM4977751302)" . "Zkoum\u00E1n\u00ED nanosekundov\u00E9ho pulzn\u00EDho laserov\u00E9ho taven\u00ED pomoc\u00ED IR radiometrie a odraziv\u00FDch metod"@cs . . . "1170" . . . "Byl vytvo\u0159en experiment\u00E1ln\u00ED syst\u00E9m pro zkoum\u00E1n\u00ED nanosekundov\u00E9ho laserov\u00E9ho taven\u00ED obsahuj\u00EDc\u00ED t\u0159i nez\u00E1visl\u00E9 bezkontaktn\u00ED metody: infra\u010Dervenou radiometrii, \u010Dasov\u011B rozli\u0161enou odrazivost He-Ne laseru a povrchem vzorku odra\u017Een\u00FD KrF v\u00FDkonov\u00FD laserov\u00FD pulz. Syst\u00E9m byl pou\u017Eit pro zkoum\u00E1n\u00ED laserov\u00E9ho taven\u00ED vzork\u016F Cu, Mo, Ni, Si, Sn, Ti, ocel \u010CSN 15330 a nerez ocel \u010CSN 17246. Pro kovov\u00E9 vzorky byl IR sign\u00E1l p\u0159eveden na teplotu. Prezentov\u00E1ny jsou z\u00EDskan\u00E9 z\u00E1vislosti povrchov\u00E9 teploty a odrazivosti na \u010Dase v nanosekundov\u00E9m m\u011B\u0159\u00EDtku (10-1000ns) pro \u0161irokou oblast hustot energi\u00ED (100-5500 mJ cm-2) laserov\u00E9ho svazku. Byly nalezeny zaj\u00EDmav\u00E9 z\u00E1vislosti. Ze zm\u011B\u0159en\u00FDch k\u0159ivek byly ur\u010Deny pr\u00E1h taven\u00ED a doba existence taveniny. Je zh"@cs . "Nanosecond pulse laser melting investigation by IR radiometry and reflection-based methods"@en . "0169-4332" . "3"^^ . "Applied Surface Science" . . "2"^^ . "Nanosecond pulse laser melting investigation by IR radiometry and reflection-based methods" . "Martan, Ji\u0159\u00ED" . . "23520" . "Cibulka, Ond\u0159ej" . . "487641" . "Zkoum\u00E1n\u00ED nanosekundov\u00E9ho pulzn\u00EDho laserov\u00E9ho taven\u00ED pomoc\u00ED IR radiometrie a odraziv\u00FDch metod"@cs . "RIV/49777513:23520/06:00000358" . . "RIV/49777513:23520/06:00000358!RIV07-MSM-23520___" . "8"^^ . . . . . . "Nanosecond pulse laser melting investigation by IR radiometry and reflection-based methods" . "nanosecond pulsed laser melting; melting duration; melting threshold; infrared radiometry; surface temperature measurement; time resolved reflectivy; experimental"@en . "NL - Nizozemsko" .