Influence of Intersection Angle of Prefabricated Cracks on Impact Failure of Flattened Brazilian Disc

Both experimental and numerical approaches were used to study dynamic failure properties and patterns of flattened Brazilian discs, containing two prefabricated cracks intersected at a varying angle. Mechanism of crack initiation, propagation, and cut-through were scrutinized and influences of the i...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2021-12, Vol.36 (6), p.884-890
Main Authors: Liu, Hao, Zhang, Yafang, Yin, Guoqi, Ou, Chenggui, Lu, Juan, Huo, Yongjie
Format: Article
Language:English
Subjects:
Acoustic emission
Advanced Materials
Chemistry and Materials Science
Crack initiation
Crack propagation
Cracks
Emission analysis
Intersections
Materials Science
Prefabrication
Stress intensity factors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Both experimental and numerical approaches were used to study dynamic failure properties and patterns of flattened Brazilian discs, containing two prefabricated cracks intersected at a varying angle. Mechanism of crack initiation, propagation, and cut-through were scrutinized and influences of the intersection angle on specimen strength and acoustic emission performance were also studied. All primary cracks initialize near the middle or the tip points of the upper prefabricated crack, and they continue to develop along the load direction and finally cut through the specimen. The secondary cracks could be observed in directions almost horizontal or parallel to the directions of prefabricated cracks. Furthermore, it is found that stress intensity factor reaches its maximum for specimen with intersection angle of 0 degree.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-021-2483-x