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  3. _141

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Rock - Determination of the drill penetration index 141 experimental

URI: https://data.geoscience.fr/ncl/Proc/141

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The CERCHAR hardness test is a microdrilling test, with an 8 mm diameter tungsten carbide drill bit, completed by a dihedral. Drill pitch is recorded as a function of time. The hardness of the sample is defined by the slope at the origin of the curve, expressed in second/centimetre.

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      alt label
  • Dureté - Méthode CERCHAR
      label
  • Rock - Determination of the drill penetration index
  • Roches - Détermination de l'indice de résistance à la pénétration par un foret
      notation
  • 141
      source
  • XP P94-412 Avril 2001 (P94-412)

All metadata properties

date accepted 5 Aug 2021 09:30:20.064
date submitted 5 Aug 2021 08:56:58.284
definition
entity Rock - Determination of the drill penetration index
source graph graph

description
en The CERCHAR hardness test is a microdrilling test, with an 8 mm diameter tungsten carbide drill bit, completed by a dihedral. Drill pitch is recorded as a function of time. The hardness of the sample is defined by the slope at the origin of the curve, expressed in second/centimetre.
fr Le test de dureté CERCHAR est un test de microforage, avec un foret de 8 mm de diamètre en carbure de tungstène, terminé par un dièdre . On enregistre l’enfoncement du foret en fonction du temps. La dureté de l’échantillon est définie par la pente à l’origine de la courbe, exprimée en secondes/centimètre.
item class Concept | laboratory test on rock | geotechnical test | experimental method | normalised method | laboratory test | Process
label
en Rock - Determination of the drill penetration index
fr Roches - Détermination de l'indice de résistance à la pénétration par un foret
notation 141
register Process
status status experimental
submitter
account name h.bressan@brgm.fr
name Hélène Bressan

type register item
version info 2