METHOD OF MEASURING FRACTURE TOUGHNESS VALUE OF METAL MATERIAL

PROBLEM TO BE SOLVED: To accurately measure a fracture toughness value using a microsample cut from a metal material. SOLUTION: This method of measuring the fracture toughness value of the metal material is constituted so that a fine flat plate is cut from the metal material, the slit 7 is next form...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KANETANI AKIHIRO, TANAKA KENICHI, KOBA KIMIHIRO, KUSUMOTO JUNICHI, AMITA TOSHIO
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To accurately measure a fracture toughness value using a microsample cut from a metal material. SOLUTION: This method of measuring the fracture toughness value of the metal material is constituted so that a fine flat plate is cut from the metal material, the slit 7 is next formed to the central part of the fine flat plate, fatigue cracks 9 are formed to both ends of the slit 7 to obtain a test piece, load is applied to the central part of the test piece through a spherical penetrator in a state that the end parts of the test piece are fixed, load and displacement are detected and the fracture toughness value is calculated from the strain energy from the start of a test to the occurrence of unstable fracture. COPYRIGHT: (C)2007,JPO&INPIT