TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PROPAGATING FRACTURE [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-06-07

English

Subject field(s)
  • Atmospheric, Climatic and Meteorological Phenomena
DEF

The physical separation of the slab from the bed surface and surrounding snow during the initiation of a slab avalanche.

CONT

... "failure" [is] when the snow begins to progressively loose strength. [Snow can fail without fracturing. Fracture is when a snow layer] snaps right off... Failure is thought, by some, to precede fracture--perhaps over the course of minutes to hours. But others believe that fracture doesn’t always require a preceding failure. There's a lot of evidence that they can both occur at the same time. When we add a rapid change to the snowpack, just like silly putty, it introduces stored elastic energy into the system making it capable of propagating a fracture.... Failure occurs slowly at perhaps centimeters per hour and fracture occurs catastrophically and has been measured at around 20 meters per second.

CONT

Fractures within the shallow weak areas can still propagate into wind loaded slopes nearby. [Example approved by the Avalanche Bulletin Terminology Standardization Committee.]

OBS

fracture: term officially approved by the Avalanche Bulletin Terminology Standardization Committee.

French

Domaine(s)
  • Phénomènes météorologiques, climatiques et atmosphériques
CONT

Les ruptures qui se produisent dans les secteurs où le manteau neigeux est peu profond et mal consolidé peuvent se propager aux pentes voisines, surchargées par le vent. [Exemple entériné par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.]

OBS

rupture; cassure; fracture : termes uniformisés par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.

Spanish

Save record 1

Record 2 2006-07-11

English

Subject field(s)
  • Engineering Tests and Reliability
  • Strength of Materials
CONT

The current trend [in toughness assessment of modern steels] is to use larger full-thickness specimens that can be made to fracture in a drop-weight test, and to instrument the test machine so that quantitative measures of toughness such as absorbed energy or crack-tip opening angle (CTOA) can be measured.

CONT

... efforts are now being devoted to micro-mechanical modelling of the fracture process to predict the load at which fracture will occur and the geometry(CTOA) of the propagating crack.

Key term(s)
  • crack tip opening angle

French

Domaine(s)
  • Fiabilité, contrôle et essais (Ingénierie)
  • Résistance des matériaux
CONT

[...] on installe sur la machine d'essai [de rupture par chute d'un poids] des instruments permettant d'obtenir des mesures quantitatives de la résilience, par exemple, l'énergie absorbée ou l'angle d'ouverture de l'extrémité de la fissure (AOEF).

CONT

Les travaux portent [...] sur la modélisation micromécanique du processus de rupture afin de prévoir la charge qui causera la rupture ainsi que la géométrie (AOEF) de la fissure qui se formera.

Spanish

Save record 2

Record 3 1991-06-19

English

Subject field(s)
  • Deterioration of Metals
  • Aircraft Airframe
OBS

ICAO C-82-AN/69-III, p. 5

OBS

a fracture starting from a nucleus where there is an abnormal concentration of cyclic stress and propagating through the metal.

French

Domaine(s)
  • Altération des métaux
  • Cellule d'aéronefs
CONT

[...] découverte d'un plus grand nombre de criques de fatigue dans les cellules [d'avions].

OBS

(aéronautique) ICAO C-50-AN/45, p. 161.

OBS

crique : fissure superficielle dans une pièce métallique [...]

Spanish

Save record 3

Record 4 1986-08-21

English

Subject field(s)
  • Geology
DEF

... a fracture starting from a nucleus where there is an abnormal concentration of cyclic stress and propagating through the material.

French

Domaine(s)
  • Géologie
DEF

(...) rupture dont le point de départ est une concentration anormale des contraintes pendant une sollicitation périodique, et se propageant à travers le matériau.

Spanish

Save record 4

Record 5 1980-09-01

English

Subject field(s)
  • Long-Distance Pipelines

French

Domaine(s)
  • Canalisations à grande distance

Spanish

Save record 5

Record 6 1980-09-01

English

Subject field(s)
  • Long-Distance Pipelines
OBS

Critical through-wall crack size may be defined as the maximum axial length of a sharp crack that the pipe can tolerate at the operating pressure without a propagating fracture starting.

French

Domaine(s)
  • Canalisations à grande distance

Spanish

Save record 6

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