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Browsing by Subject "Laser heating"

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An all optical system for studying temperature induced changes in diamond

Author: Masina, Bathusile N ; Forbes, A Date: 2010 Industrial diamonds are heated by a laser beam and the resulting temperature is optically measured on the surface of the diamond. The ultimate aim is that with the heating and temperature known and measurements being repeatable, the ... Read more
An all optical system for studying temperature induced changes in polycrystalline diamond deposited on a tungsten carbide substrate

Author: Masina, Bathusile N ; Forbes, A ; Bodkin, R ; Mwakikunga, Bonex W Date: Sep 2010 In this poster the authors discussed the ability to heat an industrial diamond sample by means of optical absorption of a CO2 laser beam, and then measure the resulting temperature on the surface of the diamond optically by means of radiometry ... Read more
Diffusion of Co and W in diamond tool induced by 10.6 µm CO2 laser radiation

Author: Masina, Bathusile N ; Forbes, Andrew ; Mwakikunga, Bonex W ; Bodkin, R Date: May 2011 At present it is known that diamond tools degrade with time as it is normally used at high temperatures. One of the questions the authors like to answer in this study is whether thermally induced problems in diamond tool arise as a result of ... Read more
Laser beam shaping for studying thermally induced damage

Author: Masina, Bathusile N ; Bodkin, R ; Mwakikunga, Bonex W ; Forbes, A Date: Aug 2011 This paper presents an implementation of a laser beam shaping system for both heating a diamond tool and measuring the resulting temperature optically. The influence the initial laser parameters have on the resultant temperature profiles is ... Read more
A light touch: application of optics and lasers to temperature control problems

Author: Forbes, A ; Masina, Bathusile N Date: Nov 2010 In this article the authors outline how an all-optical system may be designed for the heating, and then subsequent temperature measurement, of any sample, thus allowing a non-contact approach to thermal studies of materials Read more
Optical system to study temperature influenced chemical and mechanical changes to the PCD structure

Author: Masina, Bathusile N ; Forbes, A Date: Sep 2010 This presentation acknowledges that temperature induces damage in the diamond bits due to friction during the drilling process. The temperature of the diamond sample can be raised by laser heating it. Read more
Thermal damage study on diamond tools at varying laser heating time and temperature by Raman spectroscopy and SEM

Author: Masina, Bathusile N ; Mwakikunga, Bonex W ; Elayaperumal, M ; Forbes, A ; Bodkin, R Date: Jul 2011 At present it is known that diamond tool degrades with time as it is normally used at high temperatures. One of the question the authors like to answer in this study is whether thermally induced problems in diamond tool arise as a result of ... Read more
Thermally induced defects in industrial diamond

Author: Masina, Bathusile N ; Forbes, A ; Ndwandwe, OM ; Hearne, G ; Mwakikunga, Bonex W Date: Mar 2009 In this study the authors make use of laser heating of HTHP industrial diamond, as well as the optically measured temperature profile of the diamond surface, to study temperature induced changes to the diamond structure, both chemically and ... Read more

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Browsing by Subject "Laser heating"

Browsing by Subject "Laser heating"

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