TEST PIECE RUPTURE POSITION DETECTING DEVICE IN TENSION TEST

TEST PIECE RUPTURE POSITION DETECTING DEVICE IN TENSION TEST

PURPOSE:To judge a rupture area automatically by performing the non-contact detection of a rupture position in the tension test of a metallic material. CONSTITUTION:At the time of loading tension by an upper and a lower chucks in the state of extensometers 4 being fitted to the gage marks P, Q of a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHIRAISHI TOSHIAKI, OBA MITSUO, SHINOHARA TADAHIRO
Format: Patent
Sprache:eng
Schlagworte:
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:PURPOSE:To judge a rupture area automatically by performing the non-contact detection of a rupture position in the tension test of a metallic material. CONSTITUTION:At the time of loading tension by an upper and a lower chucks in the state of extensometers 4 being fitted to the gage marks P, Q of a test piece 1, a pair of light projecting-receiving devices 14, 15, disposed opposedly with the test piece 1 placed in between, detect a rupture position and also measure the distance between the gage marks P, Q at the time of the rupture being generated. On the basis of this measured distance together with the extension quantity signal measured by the extensometers 4, 5, the rupture position is automatically judged under which of A, B, C rupture specified in JIS Z 2241 to fall.