Topic
Fracture toughness
About: Fracture toughness is a research topic. Over the lifetime, 39642 publications have been published within this topic receiving 854338 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: The ex vivo crack-initiation and crack-growth toughness are determined and are found to deteriorate with age; the initiation toughness decreases some 40% over 6 decades from 40 to 100 years, while the growth toughness is effectively eliminated over the same age range.
240 citations
TL;DR: In this article, the effect of the grain size on the ductility of the material was investigated and it was found that the ductile capacity of NiAl is independent of grain size for aggregates of grains larger than about 20 microns.
240 citations
TL;DR: In this article, it is shown that a local fracture energy c can be introduced, which varies with the width of the fracture process zone and leads to a size dependence of the global specific fracture energy.
Abstract: The fracture energy Gf can be determined following a RILEM recommendation. However, it has been found that fracture energy depends on both size and geometry of the test specimen. The underlying fictitious crack model postulates that fracture energy, tensile strength, the critical opening of the fictitious crack, and the shape of the softening curve (softening factor) are constants for a given type of concrete. Here it is shown that a local fracture energy ccan be introduced. This local fracture energy varies with the width of the fracture process zone. As the crack approaches the back end of a specimen the fracture process zone becomes more and more confined and hence the local fracture energy decreases. Theoretical predictions are compared with experimental results obtained with the wedge splitting technique described earlier. It is shown that a local variation of the fracture energy leads to a size dependence of the global specific fracture energy.
239 citations
TL;DR: In this article, the effect of silica nanoparticles on the mechanical property and fracture toughness of two epoxy systems cured by Jeffamine D230 and 4,4′-diaminodiphenyl sulfone (denoted DDS) was investigated.
239 citations
TL;DR: In this paper, the authors present an experimental study of thermal conductivity, compressive strength, first crack strength and ductility indices of recycled PET fiber-reinforced concrete (RPETFRC).
239 citations