EXOTHERMIC FATIGUE MEASUREMENT METHOD OF VISCOELASTIC BODY AND HYDRAULIC SERVO SYSTEM FLEXOMETER

Title:

EXOTHERMIC FATIGUE MEASUREMENT METHOD OF VISCOELASTIC BODY AND HYDRAULIC SERVO SYSTEM FLEXOMETER

Document Type and Number:

WIPO Patent Application WO1995031887

Kind Code:

A3

Abstract:

The major object of this invention is to provide a heat build-up/fatigue measuring method for a viscoelastic body and a hydraulic servo flexometer, that enable direct measurement of a strain (displacement) and a stress (load) applied to a test piece and realize highly precise measurement by controlling the stress and the strain applied to the test piece by hydraulic servo feedback control based on the measured strain and stress. The hydraulic servo flexometer of this invention includes an upper anvil (22) and a lower anvil (18) having opposing parallel flat surfaces that form test piece holding surfaces, a hydraulic servo cylinder (19) having a piston rod (21) which is coupled to the upper anvil (22) or lower anvil (18) and which actuates in a direction perpendicular to the test piece holding surfaces, and a hydraulic servo mechanism for applying static and dynamic loads to the test piece (23).

Inventors:

ONO SHIGEKI (JP)
SATOH CHIKAHIRO (JP)
YAMADA AKIRA (JP)

Application Number:

PCT/JP1995/001762

Publication Date:

February 15, 1996

Filing Date:

September 05, 1995

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)
ONO SHIGEKI (JP)
SATOH CHIKAHIRO (JP)
YAMADA AKIRA (JP)

International Classes:

G01N25/20; G01N3/34; G01N3/36; G01N33/44; G01N3/00

Foreign References:

JPH06281606A	1994-10-07
JPS5513865A	1980-01-31
JPS4895292A	1973-12-06
JPH04113054U	1992-10-01
JPH0395429A	1991-04-19

Other References: