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Accumulation of microdamage during fatigue can lead to increased fracture susceptibility in bone. Current techniques for imaging microdamage in bone are inherently destructive and two-dimensional. Therefore, the objective of this study was to image the accumulation of fatigue microdamage in cortical bone using micro-computed tomography (micro-CT) with a barium sulfate (BaSO4) contrast agent. Two symmetric notches were machined on the tensile surface of bovine cortical bone beams in order to generate damage ahead of the stress concentrations during four-point bending fatigue. Specimens were loaded to a specified number of cycles or until one notch fractured, such that the other notch exhibited the accumulation of microdamage prior to fracture. Microdamage ahead of the notch was stained in vitro by precipitation of BaSO4 and imaged using micro-CT.

Repérage des termes

Accumulation of microdamage during fatigue can lead to increased fracture susceptibility in bone. Current techniques for imaging microdamage in bone are inherently destructive and two-dimensional. Therefore, the objective of this study was to image the accumulation of fatigue microdamage in cortical bone using micro-computed tomography (micro-CT) with a barium sulfate (BaSO4) contrast agent. Two symmetric notches were machined on the tensile surface of bovine cortical bone beams in order to generate damage ahead of the stress concentrations during four-point bending fatigue. Specimens were loaded to a specified number of cycles or until one notch fractured, such that the other notch exhibited the accumulation of microdamage prior to fracture. Microdamage ahead of the notch was stained in vitro by precipitation of BaSO4 and imaged using micro-CT.

Zoom sur les contextes

  • Accumulation of microdamage during fatigue can lead to increased fracture susceptibility in bone.
  • Current techniques for imaging microdamage in bone are inherently destructive and two-dimensional.
  • Therefore, the objective of this study was to image the accumulation of fatigue microdamage in cortical bone using micro-computed tomography with a barium sulfate contrast agent.
  • Specimens were loaded to a specified number of cycles or until one notch fractured, such that the other notch exhibited the accumulation of microdamage prior to fracture.
  • Microdamage ahead of the notch was stained in vitro by precipitation of BaSO4 and imaged using micro-CT.

Hypothèses

accumulation of microdamage (nom + prép. + terme)
to image microdamage (vb. + terme)
microdamage in bone (terme + prép. + nom)
fatigue microdamage (nom + terme)
to stain microdamage (vb. + terme)
microdamage in cortical bone (terme + prép. + nom)

Liste des concordances (contexte gauche)

Liste des concordances (contexte gauche)

Liste des concordances (contexte droit)

Liste des associations

Liste des associations

Collocation ou terme ?

microdamage accumulation
accumulation of microdamage
fatigue microdamage

Un corpus du domaine pourrait permettre de lever l'ambiguïté quant au statut de ces unités.

Classification formelle

nom + prép. + terme :
accumulation of microdamage
detection of microdamage

nom + terme :
fatigue microdamage

terme + nom :
microdamage accumulation

Classification formelle

vb. + terme :
to image microdamage
to detect microdamage
to label microdamage
to stain microdamage

terme + vb. :
microdamage accumulates

Classification formelle

terme + prép. + nom :
microdamage in bone
microdamage in cortical bone
microdamage in bone fragility
microdamage ahead of the notch

Classification en fonction du type de discours

Discours spécialisé du domaine :

accumulation of microdamage
microdamage accumulation
fatigue microdamage
to stain microdamage
microdamage accumulates
microdamage in bone
microdamage in cortical bone
microdamage in bone fragility
microdamage ahead of the notch

Classification en fonction du type de discours

Discours spécialisé généraliste :

detection of microdamage
to image microdamage
to detect microdamage
to label microdamage

user/mojca_pecman/mojca_pecman/terminom2_cours4.txt · Dernière modification: 2008/11/02 23:25 par Mojca Pecman