Results 281 to 290 of about 2,554,272 (326)

Effects of thermal history on enthalpy relaxation in glasses 7. Thermal time constants

Journal of Non-Crystalline Solids, 2010
Abstract Experimental data on a single polymer sample indicate that the instrumental/sample Green function is essentially a Dirac delta function, with a time constant of 15 s. Distortions of scanned heat capacities over the glass transition temperature range, induced by this Green function, were deconvoluted and the deconvoluted data were found to be
Ian M. Hodge, Robert Heslin
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Time Constants of Flat Arcs Cooled by Thermal Conduction

IEEE Transactions on Power Apparatus and Systems, 1965
Time constants of flat arc bands, burning between nonevaporating plates, were theoretically and experimentally investigated. Neglecting the convection term, the relevant energy balance equation was solved in a one-dimensional approximation. Expressions for the distribution of electrical gradient were inversely proportional to the plate distance and ...
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Thermal time constants of various substrates of integrated circuits

Microelectronics International, 2001
The main goal of the work is to show how the kind of substrate and heat sink of integrated circuit or system influences the thermal dynamics of the circuit or system. The investigation leads to the solution of an unsteady state thermal model with analytic method and determination of the thermal time constants of various active and passive substrates ...
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Functional Thermal Imaging of Skin Tissue Using the Discrete Thermal Time Constants Spectrum

2019
In this paper we present functional thermal imaging using InfraRed (IR) thermography to measure temperature rise in a skin tissue in transient state after weak cooling. Skin tissue is the multilayer complex biological structure. It can be modelled using thermal-electrical analogy by Foster and/or Cauer networks consisting of thermal resistances and ...
Maria Strąkowska, Robert Strąkowski, Michał Strzelecki   +2 more
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A direct method of thermal time constant measurement for lithium tantalate based terahertz pryroelectric detectors

Journal of Materials Science: Materials in Electronics, 2016
Weizhi Li, Zhiqing Liang, Jun Wang, Jun Gou, Yadong Jiang   +4 more
semanticscholar   +1 more source

Practical Treatise of Feedback Temperature Control and Thermal Time Constants

IFAC Proceedings Volumes, 1981
Abstract From a practical viewpoint, the author discusses what seems to be the special feature of feedback temperature control. When uncontrolled, the temperature of an object without internal heat generation will eventually level off with the temperature of the environment. It is quite difficult to describe this natural cooling exactly but since its
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Dual thermal time constant electrothermal modeling of PIN diode protection circuits

2015 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS), 2015
R. Caverly
semanticscholar   +1 more source

Design verification of large time constant thermal shields for optical reference cavities.

Review of Scientific Instruments, 2016
Jie Zhang, W. Wu, Xiaohui Shi, Xiaoyi Zeng, K. Deng, Zehuang Lu   +5 more
semanticscholar   +1 more source

Thermal Characteristics Analysis of Die Attach Layer Based on Time-Constant Spectrum for High-Power LED

IEEE Transactions on Electron Devices, 2015
Wei Lai, Xianming Liu, Weimin Chen, X. Lei, Xueying Cao   +4 more
semanticscholar   +1 more source

GaN HEMTs thermal time constants: Theory and Measurements

2022 23rd International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE), 2022
Anass Jakani, Raphael Sommet, K. Karrame, Jean-Christophe Nallatamby   +3 more
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