The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2019
Filed:
Jul. 18, 2016
Alexander Rubenchik, Livermore, CA (US);
Ilya V. Golosker, Livermore, CA (US);
Mary M. Leblanc, Livermore, CA (US);
Scott C. Mitchell, Tracy, CA (US);
Sheldon S. Wu, Pleasanton, CA (US);
Alexander Rubenchik, Livermore, CA (US);
Ilya V. Golosker, Livermore, CA (US);
Mary M. LeBlanc, Livermore, CA (US);
Scott C. Mitchell, Tracy, CA (US);
Sheldon S. Wu, Pleasanton, CA (US);
Lawrence Livermore National Security, LLC, Livermore, CA (US);
Abstract
A method and system for calorimetrically measuring the temperature-dependent absorptivity of a homogeneous material dimensioned to be thin and flat with a predetermined uniform thickness and a predetermined porosity. The system includes a material holder adapted to support and thermally isolate the material to be measured, an irradiation source adapted to uniformly irradiate the material with a beam of electromagnetic radiation, and an irradiation source controller adapted to control the irradiation source to uniformly heat the material during a heating period, followed by a cooling period when the material is not irradiated. A thermal sensor measures temperature of the material during the heating and cooling periods, and a computing system first calculates temperature-dependent convective and radiative thermal losses of the material based on the measured temperature of the material during the cooling period when beam intensity is zero, followed by calculation of the temperature-dependent absorptivity of the material based on the temperature-dependent convective and radiative thermal losses determined from the cooling period.