FRACTURE CHARACTERISTICS OF POWDER COMPACTS

Citation
L. Xu et al., FRACTURE CHARACTERISTICS OF POWDER COMPACTS, Powder technology, 83(3), 1995, pp. 193-199
Citations number
19
Categorie Soggetti
Engineering, Chemical
Journal title
ISSN journal
00325910
Volume
83
Issue
3
Year of publication
1995
Pages
193 - 199
Database
ISI
SICI code
0032-5910(1995)83:3<193:FCOPC>2.0.ZU;2-W
Abstract
The fracture behaviour of coal flyash compacts, in which interparticle forces are relatively weak, is investigated. Notched and unnotched sp ecimens of coal flyash compacts were tested to failure in flexure usin g a test method developed in this report. The fracture toughness at fa ilure, as calculated from linear elastic fracture mechanics (LEFM), ap peared to be a constant of the material for a deep notch. Significant weakening of the powder compact occurred in the presence of a crack. C oal flyash compacts with a higher moisture content showed a degree of plasticity; this is linked to an increase in the fracture toughness of these compacts.