This paper is about a genealogy of a young crack user in the city of Santa Maria, Rio Grande do Sul. In this way the notions are thought with universal pretentions which affect the young user of crack. It aims at movement ...

Fatigue crack initiation occurs at the surface, although sub surface nucleation has also been reported. Localized imperfections like inclusions close to surface and surface small pits can result in crack sources. Coatings ...

Fatigue crack initiation occurs at the surface, although sub surface nucleation has also been reported. Localized imperfections like inclusions close to surface and surface small pits can result in crack sources. Coatings ...

The work presents two new numerical techniques devised for modeling propagating material failure, i.e. cracks in fracture mechanics or slip-lines in soil mechanics. The first one is termed crack-path-field technique and ...

OBJECTIVE: To establish a progression on drug use and its intervening factors among crack users. METHODS: A qualitative methodology was applied for an in-depth investigation, taking into consideration the interviewees' ...

In this work a model was developed that allows to understand the behavior of a chirped fiber Bragg grating for the detection and characterization of cracks in materials. In addition to the amplitude response, we show that ...