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Damage induced by a spherical indentation test in tool steels detected by using acoustic emission technique

Author
Martinez-Gonzalez, E.; Ramírez, G.; Romeu, J.; Casellas, D.
Type of activity
Journal article
Journal
Experimental mechanics
Date of publication
2015-02-01
Volume
55
Number
2
First page
449
Last page
458
DOI
https://doi.org/10.1007/s11340-014-9959-y Open in new window
Abstract
The aim of this study is to monitor the subsurface damage mechanisms of commercial cold-work tool steel by observing acoustic emissions generated in a spherical indentation test. Monotonic loads are applied in the elastic and plastic ranges to damage the specimen. Two types of damage prior to the occurrence of cracking are found: carbide breakage and plastic deformation. The phenomena are confirmed by microscopic images and the good agreement between the estimated carbide fracture strength and p...
Keywords
Acoustic emission, CARBIDE, CERAMICS, CONTACT FATIGUE BEHAVIOR, Damage mechanisms, GLASS, HERTZIAN FRACTURE, MICROSTRUCTURE, Micro-mechanics, Microstructure, STRAIN, STRESS, Signal, Spherical indentation
Group of research
LEAM - Acoustic and Mechanical Engineering Laboratory

Participants