Specific gravity and mechanical properties of Aningeria robusta wood from Nigeria

Ajala O. O., . and Ogunsanwo O. Y., . Specific gravity and mechanical properties of Aningeria robusta wood from Nigeria. pp. 389-395. ISSN 0128-1283

Sourcing of choice timber species is becoming increasingly difficult in the forests of West Africa including Nigeria. There is a need to provide alternative species by investigating the technical qualities of species that are hitherto not harvested. Six trees of Aningeria robusta were sampled at the base 10 30 50 70 and 90 of merchantable length and partitioned into the inner middle and outer wood along the radial plane. Specific gravity (SG) and selected mechanical properties namely modulus of rupture (MOR) compressive strength parallel to grain (MCS) and impact bending (IB) were investigated. Data were analysed using analysis of variance. The overall mean SG was 0.44 while the mean values for MOR MCS and IB were 89.05 N mm-2 27.45 N mm-2 and 0.2 m respectively. Significant variations existed between sampling heights in SG and MOR while variations in MCS and IB were not significant along the bole. For all properties investigated no significant variation was found from the inner to the outer wood. The wood properties of this species indicate that it has the potential to substitute some popular species in the market. Its radial and axial uniformity may be exploited in marketing strategy.

Full text available from: Official URL: http://www.frim.gov.my/v1/JTFSOnline/jtfs/v23n4/38...

Abstract

Sourcing of choice timber species is becoming increasingly difficult in the forests of West Africa including Nigeria. There is a need to provide alternative species by investigating the technical qualities of species that are hitherto not harvested. Six trees of Aningeria robusta were sampled at the base 10 30 50 70 and 90 of merchantable length and partitioned into the inner middle and outer wood along the radial plane. Specific gravity (SG) and selected mechanical properties namely modulus of rupture (MOR) compressive strength parallel to grain (MCS) and impact bending (IB) were investigated. Data were analysed using analysis of variance. The overall mean SG was 0.44 while the mean values for MOR MCS and IB were 89.05 N mm-2 27.45 N mm-2 and 0.2 m respectively. Significant variations existed between sampling heights in SG and MOR while variations in MCS and IB were not significant along the bole. For all properties investigated no significant variation was found from the inner to the outer wood. The wood properties of this species indicate that it has the potential to substitute some popular species in the market. Its radial and axial uniformity may be exploited in marketing strategy.

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Item Type:	Article
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Specific gravity
AGROVOC Term:	Timber
AGROVOC Term:	Elasticity
AGROVOC Term:	Sampling
AGROVOC Term:	Wood products
AGROVOC Term:	Sandy soils
AGROVOC Term:	Limestone
AGROVOC Term:	Forest reserves
AGROVOC Term:	Humid climate
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/21474

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