Modeling the Material Resistance of Wood—Part 2: Validation and Optimization of the Meyer-Veltrup Model

Christian Brischke; Gry Alfredsen; Miha Humar; Elena Conti; Laurie Cookson; Lukas Emmerich; Per Otto Flæte; Stefania Fortino; Lesley Francis; Ulrich Hundhausen; Ilze Irbe; Kordula Jacobs; Morten Klamer; Davor Kržišnik; Boštjan Lesar; Eckhard Melcher; Linda Meyer-Veltrup; Jeffrey J Morrell; Jack Norton; Gerald Presley; Sabrina Palanti; Ladislav Reinprecht; Tripti Singh; Rod Stirling; Martti Venäläinen; Mats Westin; Andrew H. H Wong; Ed Suttie

doi:10.3390/f12050576

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Modeling the Material Resistance of Wood—Part 2: Validation and Optimization of the Meyer-Veltrup Model

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Modeling the Material Resistance of Wood—Part 2: Validation and Optimization of the Meyer-Veltrup Model

Christian Brischke, Gry Alfredsen, Miha Humar, Elena Conti, Laurie Cookson, Lukas Emmerich, Per Otto Flæte, Stefania Fortino, Lesley Francis, Ulrich Hundhausen, …

Forests, Vol.12(5), pp.1-18

2021

DOI: https://doi.org/10.3390/f12050576

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Abstract

biological durability

dose-response model

fungal decay

moisture dynamics

moisture performance

service life prediction

water uptake and release

wetting ability

Service life planning with timber requires reliable models for quantifying the effects of exposure-related parameters and the material-inherent resistance of wood against biotic agents. The Meyer-Veltrup model was the first attempt to account for inherent protective properties and the wetting ability of wood to quantify resistance of wood in a quantitative manner. Based on test data on brown, white, and soft rot as well as moisture dynamics, the decay rates of different untreated wood species were predicted relative to the reference species of Norway spruce (Picea abies). The present study aimed to validate and optimize the resistance model for a wider range of wood species including very durable species, thermally and chemically modified wood, and preservative treated wood. The general model structure was shown to also be suitable for highly durable materials, but previously defined maximum thresholds had to be adjusted (i.e., maximum values of factors accounting for wetting ability and inherent protective properties) to 18 instead of 5 compared to Norway spruce. As expected, both the enlarged span in durability and the use of numerous and partly very divergent data sources (i.e., test methods, test locations, and types of data presentation) led to a decrease in the predictive power of the model compared to the original. In addition to the need to enlarge the database quantity and improve its quality, in particular for treated wood, it might be advantageous to use separate models for untreated and treated wood as long as the effect of additional impact variables (e.g., treatment quality) can be accounted for. Nevertheless, the adapted Meyer-Veltrup model will serve as an instrument to quantify material resistance for a wide range of wood-based materials as an input for comprehensive service life prediction software.

Details

Title: Modeling the Material Resistance of Wood—Part 2: Validation and Optimization of the Meyer-Veltrup Model
Authors: Christian Brischke (Author) - University of Göttingen
Gry Alfredsen (Author) - Norwegian Institute of Bioeconomy Research
Miha Humar (Author) - University of Ljubljana
Elena Conti (Author) - CATAS
Laurie Cookson (Author) - LJ Cookson Consulting
Lukas Emmerich (Author) - University of Göttingen
Per Otto Flæte (Author) - Norwegian Institute of Wood Technology
Stefania Fortino (Author) - VTT Technical Research Centre of Finland
Lesley Francis (Author) - Department of Primary Industries
Ulrich Hundhausen (Author) - Norwegian Institute of Wood Technology
Ilze Irbe (Author) - Latvian State Institute of Wood Chemistry
Kordula Jacobs (Author) - Institut für Holztechnologie Dresden
Morten Klamer (Author) - Danish Technological Institute
Davor Kržišnik (Author) - University of Ljubljana
Boštjan Lesar (Author) - University of Ljubljana
Eckhard Melcher (Author) - Thuenen Institute of Wood Research
Linda Meyer-Veltrup (Author)
Jeffrey J Morrell (Author) - University of the Sunshine Coast, Queensland, National Centre for Timber Durability and Design Life
Jack Norton (Author) - Department of Primary Industries
Gerald Presley (Author) - Oregon State University
Sabrina Palanti (Author) - Institute of BioEconomy
Ladislav Reinprecht (Author) - Oregon State University
Tripti Singh (Author) - Scion
Rod Stirling (Author)
Martti Venäläinen (Author) - Natural Resources Institute Finland
Mats Westin (Author)
Andrew H. H Wong (Author) - Universiti Malaysia Sarawak
Ed Suttie (Author) - Building Research Establishment
Publication details: Forests, Vol.12(5), pp.1-18
Publisher: MDPI AG
Date published: 2021
DOI: 10.3390/f12050576
ISSN: 1999-4907
Copyright note: Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Organisation Unit: Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; National Centre for Timber Durability and Design Life; Forest Research Institute
Language: English
Record Identifier: 99533808702621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Forestry