References of "Pirard, Eric"
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See detailGeochemistry of bitter brines in the Salar de Coipasa - Bolivia
Lebrun, Vincent; Pacosillo, Pedro; Gutierrez, Jorge et al

in Aardkundige Mededelingen (2002), 12

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See detailCaractérisation de particules d'engrais : corrélation entre les propriétés physiques et morphométriques
Miserque, Olivier; Tissot, Serge; Pirard, Eric ULg

in Récents Progrès en Génie des Procédés (2001), 15(78),

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See detailIntroduction générale aux techniques d'imagerie
Pirard, Eric ULg

in Techniques de l'Industrie Minérale (2001), 12

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See detailQuantitative description of MC, M2C, M6C and M7C3 carbides in high speed steel rolls
De Colnet, Laurence; Pirard, Eric ULg; Tchoufang Tchuindjang, Jérôme et al

in Sandera, Pavel (Ed.) proceedings of the MSMF-3 international conference held in Brno (2001)

One goal of the COST 517 project entitled “Effects of inclusions and carbides on the mechanical properties of alloyed steels” is to establish quantitative and statistical relations between the ... [more ▼]

One goal of the COST 517 project entitled “Effects of inclusions and carbides on the mechanical properties of alloyed steels” is to establish quantitative and statistical relations between the microstructure and the mechanical properties of rolls materials. This paper presents the different steps necessary to characterise the microstructure and the carbides presents in high-speed steel rolls. First, carbides were examined by SEM and EDX microscopy. Then, images of samples were acquired by optical microscopy and analysed to finally measure quantitative parameters describing the grains and the carbides. [less ▲]

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See detailEffect of alumina and titanium nitrides inclusions on mechanical properties in high alloyed steels
Lecomte-Beckers, Jacqueline ULg; Tchoufang Tchuindjang, Jérôme; Gfhiri, Rachid et al

in Proceedings of the MSMF-3 International Conference (2001)

every commercial steel product in varying amounts. Since inclusions significantly influence properties and behaviour of materials and at the same time give indications on the quality of the steel, it is ... [more ▼]

every commercial steel product in varying amounts. Since inclusions significantly influence properties and behaviour of materials and at the same time give indications on the quality of the steel, it is quite interesting to precise their nature and their origin. In this paper concerning a project involved in the COST 517 framework, studied alloys are high alloy steels. The raw materials were obtained from the conventionally electrical cast ingot and the Electro Slag Refining processes. The purpose is to compare various inclusions produced by these different processes and their effect on the mechanical properties. The raw material because of the melting processes themselves, leads to a product with a good to a great cleanliness, and tiny inclusions, which are haphazardly distributed. The actual ASTM E45 chart seems to be inappropriate, as the inclusions founded are too small in size. Therefore, we manage to develop a specific procedure for the study of such inclusions. The different types of inclusions encountered are oxides, titanium nitrides, and manganese sulphides. Studying the effect on mechanical properties, oxides often seem to initiate fatigue fracture. [less ▲]

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See detailGeological application of digital imaging
Pirard, Eric ULg; Jongmans, Denis; Marsh, Stuart

in Computers & Geosciences (2001), 27(9), 1015-1017

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See detailMultiradial Imaging in Optical Ore Microscopy
Pirard, Eric ULg; De Colnet, Laurence

in Proceedings - Annual Meeting - Belgian Soc. Microscopy (2001)

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See detailApplication and processing of geophysical images for mapping faults
Demanet, Donat; Renardy, François; Pirard, Eric ULg et al

in Computers & Geosciences (2001), 29(7), 1031-1037

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See detailMultispectral Imaging in Cathodoluminescence Microscopy
Charlier, Bernard ULg; De Colnet, Laurence; Pirard, Eric ULg

in Proceedings - Annual Meeting - Belgian Soc. Microscopy (2001)

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See detailGranulométrie et Morphométrie des matériaux granulaires en laboratoire
Pirard, Eric ULg

in Techniques de l'Industrie Minérale (2001), 12

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See detailImage analysis of carbides in high speed steel rolls and their relationship with the mechanical properties
De Colnet, Laurence; Pirard, Eric ULg; Lecomte-Beckers, Jacqueline ULg et al

in Proceedings of the Euromat Metallographic Conference, Progress in Metallography (2001)

Image analysis is used to describe quantitatively various different natures of carbides in high speed steel rolls. After an etching judiciously selected, the identification and the extraction of the ... [more ▼]

Image analysis is used to describe quantitatively various different natures of carbides in high speed steel rolls. After an etching judiciously selected, the identification and the extraction of the carbide types are based on spectral differences. For every carbide type, three parameters are measure : the size, the spatial distribution and the volume fraction. The size of martensite grain is also measured. [less ▲]

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See detailEnhancing mineral segmentation in optical microscopy with multispectral imaging
Pirard, Eric ULg; De Colnet, Laurence

in Proceedings 8th European Congress for Stereology (2000)

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See detailMoving from colour to multispectral digital imaging in optical microscopy
Pirard, Eric ULg; De Colnet, Laurence

in NvvM Jaarboek (2000)

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See detailSegmentation of multispectral images in optical metallography
Pirard, Eric ULg; Bertholet, Vincent

in Revue de Métallurgie - Sciences et Génie des Matériaux (2000), Fév. 2000

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See detailA geological information system for paleoseismological data retrieving and analysis
Bonino, Enrico; Pirard, Eric ULg

in Proceedings Paleosis (2000)

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See detailOptimal acquisition of video images in reflected light microscopy
Pirard, Eric ULg; Lebrun, Vincent; Nivart, Jean-François

in European Microscopy and Analysis (1999), 60(9-11),

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See detailReconciliation of visual charts and image analysis in measuring the abrasion of particles
Pirard, Eric ULg

in Proceedings BioGeoVision 99 (1999)

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See detailA preliminary study of cross correlation between lithology and K airborne radiometry in the Belgian Ardennes
Maréchal, Jean-Christophe; Bonino, Enrico; VanBrabant, Yves et al

in Proceedings of GeoVision 99 (1999)

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See detailDevelopment of specific acquisition techniques for field imaging - Applications to outcrops and marbles
Lebrun, Vincent; Nivart, Jean-François; Bonino, Enrico et al

in Proceedings of GeoVision 99 (1999)

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See detailApplication and processing of geophysical images for mapping faults
Demanet, Donat; Renardy, François; Pirard, Eric ULg et al

in Proceedings of GeoVision 99 (1999)

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