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  2. Proc
  3. _141
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Entry: Rock - Determination of the drill penetration index

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

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.

Core metadata

is a Concept | geotechnical test | laboratory test on rock | experimental method | normalised method | Process | laboratory test
category 14
submitted byHélène Bressan
accepted on 5 Aug 2021 09:30:20.064

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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 Proc
status status stable
submitter
account name h.bressan@brgm.fr
name Hélène Bressan

type register item
version info 3
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Definition

alt label Dureté - Méthode CERCHAR
category geotechnics
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.
in scheme 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
pref label
en Rock - Determination of the drill penetration index
fr Roches - Détermination de l'indice de résistance à la pénétration par un foret
source XP P94-412 Avril 2001 (P94-412)
status Valid
top concept of Process
type Concept | geotechnical test | laboratory test on rock | experimental method | normalised method | Process | laboratory test

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