Confirmation method of calibration by visual calibration gauge on surface testing

Masako Mori, Toshibumi Kashiwa, Yoshimitsu Aoki

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In 2002, Japanese Industrial standard JIS Z 2340[1] has issued to provide the instruction of new methodology to calibrate the observing conditions of surface testing such as liquid penetrant and magnetic particle testing applying visual calibration gauges. The visual calibration gauges are the transparent plates, on which the line pairs printed to be used to confirm the resolution of visual testing observing view. The concept of line pair has been used to evaluate the resolutions of optical instruments, and the line pair value is a numerical value that shows how many line pairs can be distinguished as separate lines within 1 millimeter. In this paper, the background of the development and the general outlines of visual calibration gauges are introduced at first. And then applications of the gauges and detail process to calibrate the surface testing observing view conditions are also described.

Original languageEnglish
Title of host publication2007 Proceedings of the ASME Pressure Vessels and Piping Conference - Codes and Standards
Number of pages4
Publication statusPublished - 2008 May 19
Externally publishedYes
Event2007 ASME Pressure Vessels and Piping Conference, PVP 2007 - San Antonio, TX, United States
Duration: 2007 Jul 222007 Jul 26

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
ISSN (Print)0277-027X


Other2007 ASME Pressure Vessels and Piping Conference, PVP 2007
Country/TerritoryUnited States
CitySan Antonio, TX

ASJC Scopus subject areas

  • Mechanical Engineering


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