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. 05, 2019
Filed:
Nov. 14, 2016
China Building Material Test & Certification Group Co., Ltd., Beijing, CN;
Abstract
Disclosed are a method and an apparatus for testing residual stress in coatings. The method includes: obtaining elastic modulus of a coating and a substrate of a target object; obtaining a temperature during the coating preparation of the target object; obtaining a cross-sectional area of the coating and a cross-sectional area of the substrate of the target object; obtaining a thermal expansion coefficient of the coating and a thermal expansion coefficient of the substrate of the target object; and calculating the coating residual stress σof the target object by the following formula: wherein, Sis the cross-section area of the coating, Sis the cross-section area of the substrate, Eis the elastic modulus of the coating, Eis the elastic modulus of the substrate, αis the thermal expansion coefficient of the coating, αis the thermal expansion coefficient of the substrate, and ΔTis the temperature during the coating preparation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile