TITLE:
Study on Acoustic Emission Characteristics of Deformation Damage Process of Zirconia Ceramics
AUTHORS:
Qingchuan Fu, Yushu Lai
KEYWORDS:
Zirconia Ceramics, Acoustic Emission Monitoring, Crack Damage
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.12 No.2,
February
27,
2024
ABSTRACT: Zirconia ceramics have become increasingly widely used in recent years and are favored by relevant enterprises. From the traditional dental field to aerospace, parts manufacturing has been used, but there is limited research on the deformation and damage process of zirconia ceramics. This article analyzes the acoustic emission characteristics of each stage of ceramic damage from the perspective of acoustic emission, and explores its deformation process characteristics from multiple perspectives such as time domain, frequency, and EWT modal analysis. It is concluded that zirconia ceramics exhibit higher brittleness and acoustic emission strength than alumina ceramics, and when approaching the fracture, it tends to generate lower frequency acoustic emission signals.