Dynamic fracture analysis in Brazilian test: application to pharmaceutical tablets
Language
EN
Article de revue
This item was published in
International Journal of Fracture. 2021-05-10, vol. 229, n° 1, p. 113-124
English Abstract
In this paper, the flattened disk Brazilian test was used to evaluate the critical fracture parameter of a pharmaceutical tablet made of compressed anhydrous lactose powder. Following previous works, the energy release ...Read more >
In this paper, the flattened disk Brazilian test was used to evaluate the critical fracture parameter of a pharmaceutical tablet made of compressed anhydrous lactose powder. Following previous works, the energy release rate function was build thanks to experimental tests and numerical simulations. During the experimental tests, a high speed camera was used to capture the crack tip location during the dynamic propagation and Rapid Crack Propagation mechanisms were observed. A numerical analysis was thus used to evaluate the dynamic correction factor needed to take into account the inertia effects due to the crack tip velocity. The results were then compared to those obtained with the classical analytic relation related to a crack propagation in a semi-infinite plate. After giving a range of fracture energy for the material, the necessity to take into account inertia effects in the estimate of the fracture energy of the material was finally discussed in the case of the Brazilian test.Read less <
English Keywords
Rapid crack propagation
Dynamic energy release rate
Dynamic fracture
Pharmaceutical tablet
Brazilian test
Inertia effect
ANR Project
Clivage en compression pharmaceutique - ANR-17-CE08-0015