METHOD AND APPARATUS FOR MEASURING DYNAMIC STRETCH RIGIDITY OF OUTER PANEL OF AUTOMOBILE COMPONENT

Title:

METHOD AND APPARATUS FOR MEASURING DYNAMIC STRETCH RIGIDITY OF OUTER PANEL OF AUTOMOBILE COMPONENT

Document Type and Number:

WIPO Patent Application WO/2014/069518

Kind Code:

A1

Abstract:

[Problem] To provide a technology for measuring dynamic stretch rigidity with increased accuracy. [Solution] A method for measuring dynamic stretch rigidity of an outer panel of an automobile component includes deforming a measured outer panel by pressing an indenter onto a surface of the measured outer panel in a predetermined pressing direction intersecting the surface and with a predetermined load, and measuring a deformed state of the measured outer panel. The method is characterized in that: a grid is transferred onto a surface at a measured site of the measured outer panel; a reference marker is placed in the vicinity of the measured site of the measured outer panel; the grid on the surface of the measured outer panel deformed by the load of the indenter is photographed by a plurality of cameras from a plurality of positions simultaneously and repeatedly while the indenter is pressed onto the surface at the measured site of the measured outer panel with the load, and while the indenter is moved in a direction perpendicular to the pressing direction; and a change in the deformed state of the measured outer panel as a result of the movement of the indenter is measured by calculating three-dimensional position information of the grid on the basis of image data obtained by the photographing and in accordance with correspondence to the reference marker, the change being output as panel deformation data.

Inventors:

FUTATSUKA TAKAYUKI (JP)
IWAMA TAKASHI (JP)
SATO KENTARO (JP)
YAMASAKI YUJI (JP)
KOMATU YOUITI (JP)
SHIRAISHI EIICHI (JP)
YOSHITOMI KAZUNARI (JP)
HATA YUKIKO (JP)
TOKIEDA KAYO (JP)

Application Number:

PCT/JP2013/079386

Publication Date:

May 08, 2014

Filing Date:

October 30, 2013

Export Citation:

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Assignee:

JFE STEEL CORP (JP)

International Classes:

G01N3/20

Foreign References:

JP2009204468A	2009-09-10
JP2009115775A	2009-05-28
JP3072735U	2000-11-02
JPH01197627A	1989-08-09
JPS6145953A	1986-03-06
JPS5886436A	1983-05-24
JPH04134243A	1992-05-08
JPS599542A	1984-01-18
JPS6270730A	1987-04-01
JPH0618947A	1994-01-28
JPH0714857B2	1995-02-22
JP2009204468A	2009-09-10

Other References: