Impact of fungal decay on the structural integrity of wood

Felle, Tim Konrad (avtor), Emmerich, Lukas (avtor), Humar, Miha (avtor), Brischke, Christian (avtor)

Wood-destroying fungi induce different types of decay, which cause significant reductions in elastomechanical properties of wood when the mass loss is not yet gravimetrically detectable. Particularly difficult to define is incipient decay since the reduction of elastomechanical properties is highly dependent on the heterogeneity of wood species. Early-stage effects of incipient decay on impact behavior remain insufficiently understood. The aim of this study was to clarify how different rot types affect structural integrity in relation to mass loss. Therefore European beech (Fagus sylvatica) and Scots pine (Pinus sylvestris) sapwood specimens were incubated with white-rot (Trametes versicolor), brown-rot (Coniophora puteana) or soft-rot fungi. After incubation, moisture content and relative mass loss were measured. Mass loss (ML) increased linearly over time across all fungi-wood combinations, reaching a maximal reduction of 67% in European beech wood and 39% in Scots pine sapwood with Trametes versicolor. For Coniophora puteana, ML in European beech peaked at 26%, while Scots pine sapwood reached 24%. Soft-rot fungi caused the least degradation reaching 9% ML for European beech wood and 4% for Scots pine sapwood after 99 days. High-Energy Multiple Impact (HEMI) – tests were performed to evaluate the effect of mass loss by fungal decay on the structural integrity of wood, expressed as the Resistance to Impact Milling (RIM). The RIM decreased with increasing ML at early-stages proving the high sensitivity of the test to detect incipient decay, especially with brown rot. The reduction of structural integrity was compared with the reduction of different strength properties of wood depending on the mass loss, where RIM values exhibited less variability compared to other strength properties, suggesting higher measurement stability in case of white and brown-rot decay.

• Jezik: Angleški jezik
• Ključne besede: fungal decay, resistance to impact milling, RIM, mass loss, rot types
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2026
• Št. strani: Str. 1-11
• Številčenje: iss. 1, Vol. 84
• PID: 20.500.12556/RUL-177740
• UDK: 630*84
• ISSN pri članku: 1436-736X
• DOI: 10.1007/s00107-025-02359-0
• COBISS.SI-ID: 263494147
• Datum objave v RUL: 06.01.2026

Gradivo je del revije

• Naslov: European journal of wood and wood products
• Založnik: Springer
• ISSN: 1436-736X
• COBISS.SI-ID: 22253061

Licence

• Licenca: CC BY-NC 4.0, Creative Commons Priznanje avtorstva-Nekomercialno 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc/4.0/deed.sl
• Opis: Licenca Creative Commons, ki prepoveduje komercialno uporabo, vendar uporabniki ne rabijo upravljati materialnih avtorskih pravic na izpeljanih delih z enako licenco.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: glivni razkroj lesa, odpornost pri udarnem mletju, izguba mase, vrste trohnobe

Projekti

• Financer: Drugi - Drug financer ali več financerjev
• Številka projekta: -
• Naslov: DEAL
• Akronim: DEAL