ARIBANDA (Trichilia tessmannii)
Nom commercial
Aribanda
Nom scientifique (avec auteur)
Trichilia tessmannii Harms
Famille
MELIACEAE
Noms communs (pays)
Ogiovallo (Nigeria); Aribanda (Côte d`Ivoire); Tobla (Congo); Nom oswé (Cameroon); Mayimbonagbanga (Cameroon); Lebonda (Cameroon); Aribanda
Synonymes du nom scientifique (avec auteurs)
Trichilia mildbraedii Harms; Trichilia lanata A. Chev.
DESCRIPTION DE L'ARBRE
Description botanique
The tree is slightly buttressed. The bole is straight and cylindrical, may be up to 20 m in length. The trunk diameter attains 80 cm.
Habitat naturel
Trichilia tessmannii is sporadically present in evergreen and semi-deciduous forests.
Répartition naturelle
West Africa, from Sierra Leone to Cabinda and to the Democratic Republic of the Congo.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). Non-vestured pits. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Vessel-ray pits similar to intervessel pit Axial parenchyma aliform. Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 2 seriate. Silica bodies in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal ce Non-septate fibers. Fibers with simple to minutely bordered pits.
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Vue macroscopique du bois (plan tangentiel)
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Vue microscopique d'une section transversale du bois
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood is pinkish grey, it is not clearly demarcated.
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
The wood is typically fine in texture.
Durabilité naturelle
Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Sensible to termites attack. The heartwood is sensible to Lyctus attacks.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.54
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.59
Retrait tangentiel total (saturé à 0%TH) (%)
6.2
Retrait radial total (saturé à 0%TH) (%)
4.9
Défauts dus au séchage
Ease of Drying: Drying is very slow and difficult to perform; defects are frequent. Drying Defects: Risks of checks, distortions and collapse. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.3
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
880
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
124000
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
487
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
60
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
63
Dureté Janka (latérale) 12%TH (kgf)
429
Dureté Janka (extrémités) 12%TH (kgf)
533
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Not suitable for veneering.
Placage tranche
Not suitable for veneering.
Usinage
Machining of this species is reportedly easy.
Rabotage
Moderately easy; tools must be cautiously sharpened.
Moulurage
Easy; no particular problems.
Perçage
Easy; no particular problems.
Mortaisage
Easy; no particular problems.
Clouage
No particular problem.
Collage
Glues well if basic gluing technical rules are followed.
Ponçage
Easy to perform; it gives good results.
Polissage
Can be polished without surface preparation.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, boards, frames, FURNITURE AND CABINETS, common furniture, PACKING, light packing, OTHER AND MUSICAL INSTRUMENTS, moldings
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Planches
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Cadres
- 16 - Woods of the World
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Meubles ordinaire
- 23 - Handbook of Hardwoods
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Embal_léger
- 46 - ECUADOR, Inventario y Aprovechamiento de los Bosques del Sur Ecuatoriano
Moulures
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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