Title:
NONDESTRUCTIVE INSPECTION DEVICE OF SHEET
Document Type and Number:
Japanese Patent JP2002333436
Kind Code:
A
Abstract:
To solve the problems of a conventional nondestructive inspection device of a sheet, which becomes in a large scale and highly accurate inspection is difficult.
An impact is imparted by a striking means 1 to the sheet W supported by a support means 2, and a sound pressure or a vibration generated by the impact is detected by a detection means 3. The detection signal is analyzed and plural characteristic quantity data are acquired therefrom by a calculation means 4, and the existence of a cracked defect of the sheet is determined from the characteristic quantity data by a determination means 5.
Inventors:
TOMINAGA HISAFUMI
SASAI HIROYUKI
SASAI HIROYUKI
Application Number:
JP2001139920A
Publication Date:
November 22, 2002
Filing Date:
May 10, 2001
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01N29/04; G01N29/00; G01N29/12; (IPC1-7): G01N29/10; G01N29/12; G01N29/20
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)