14 research outputs found
Electrical, thermal and optical characterization of power LED assemblies
Besides their electrical properties the optical parameters of LEDs also
depend on junction temperature. For this reason thermal characterization and
thermal management play important role in case of power LEDs, necessitating
both physical measurements and simulation tools. The focus of this paper is a
combined electrical, thermal and optical characterization of power LED
assemblies. In terms of simulation a method for board-level electro-thermal
simulation is presented, for measurements a combined thermal and radiometric
characterization system of power LEDs and LED assemblies is discussed.
Comparison of measurement and simulation results is presented in a case study.Comment: Submitted on behalf of TIMA Editions
(http://irevues.inist.fr/tima-editions
Applications of hybrid and digital computation methods in aerospace-related sciences and engineering
The computing equipment in the engineering systems simulation laboratory of the Houston University Cullen College of Engineering is described and its advantages are summarized. The application of computer techniques in aerospace-related research psychology and in chemical, civil, electrical, industrial, and mechanical engineering is described in abstracts of 84 individual projects and in reprints of published reports. Research supports programs in acoustics, energy technology, systems engineering, and environment management as well as aerospace engineering