A mathematical model of mould growth on wooden material

Antti Hukka, Hannu Viitanen

Research output: Contribution to journalArticleScientificpeer-review

160 Citations (Scopus)

Abstract

A mathematical model for the simulation of mould fungi growth on wooden material is presented, based on previous regression models for mould growth on sapwood of pine and spruce. Quantification of mould growth in the model is based on the mould index used in the experiments for visual inspection. The model consists of differential equations describing the growth rate of the mould index in different fluctuating conditions including the effect of exposure time, temperature, relative humidity and dry periods. Temperature and humidity conditions favourable for mould growth are presented as a mathematical model. The mould index has an upper limit which depends on temperature and relative humidity. This limiting value can also be interpreted as the critical relative humidity needed for mould growth depending also on the mould growth itself. The model enables to calculate the development of mould growth on the surface of small wooden samples exposed to arbitrary fluctuating temperature and humidity conditions including dry periods. The numerical values of the parameters included in the model are fitted for pine and spruce sapwood, but the functional form of the model can be reasoned to be valid also for other wood-based materials.
Original languageEnglish
Pages (from-to)475-485
Number of pages11
JournalWood Science and Technology
Volume33
Issue number6
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

Fingerprint

molds (fungi)
mathematical models
Mathematical models
Atmospheric humidity
relative humidity
sapwood
humidity
temperature
Temperature
Picea
Pinus
material
Fungi
Wood
Differential equations
Inspection
growth models
fungus
exposure duration
fungi

Cite this

Hukka, Antti ; Viitanen, Hannu. / A mathematical model of mould growth on wooden material. In: Wood Science and Technology. 1999 ; Vol. 33, No. 6. pp. 475-485.
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A mathematical model of mould growth on wooden material. / Hukka, Antti; Viitanen, Hannu.

In: Wood Science and Technology, Vol. 33, No. 6, 1999, p. 475-485.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Viitanen, Hannu

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