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:
Dec. 19, 2017
Filed:
Oct. 02, 2015
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Unist Academy-industry Research Corporation, Ulsan, KR;
Jae Ryeon Hwang, Ulsan, KR;
ByungHun Kim, Ulsan, KR;
Franklin Bien, Ulsan, KR;
Hyon Gi Yoo, Seoul, KR;
Chan Woo Jeong, Seoul, KR;
Nguyen Ngoc Quang, Ulsan, KR;
Liu Zhenyi, Korea, RE;
Seul Ki Rom Kim, Gwangju, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
UNIST Academy-Industry Research Corporation, Ulsan, KR;
Abstract
An apparatus for detecting a defect of a press panel includes: an acoustic emission sensor unit configured to detect at least one elastic wave signal emitted from the press panel as a detection target during press work, a period measurer configured to measure a period as a section in which there are consecutive signals with a greater voltage than a threshold voltage among the at least one detected signals, and a defect existence determination unit configured to determine that a defect is generated in the press panel when the measured period is greater than a first reference value, and to determine that the press panel is in a normal state when the measured period is smaller than a second reference value which is smaller than the first reference value.