Influence of insect damage to the fatigue life of an old larch wood

Klemenc, Jernej (author), Humar, Miha (author), Fajdiga, Gorazd (author)

In many cultural heritage buildings, structural members are made of wood. Over the years, wood is exposed to various biotic and abiotic degradation factors, including moisture oscillations, mechanical stress, and insect and fungal decay. In the present respective study, an experimental study on the fatigue life of 350 years old larch wood was carried out. The fatigue life of the old wood was compared to the fatigue life of the recent larch wood. A statistical model for the fatigue-life curves and their scatter was built for both kinds of wood. The model can consider different factors to the fatigue life, e.g. wood density, specimen orientation during loading, and extent of insect damage. An equivalent number of load cycles to failure was also defined, enabling a direct comparison of the fatigue life data for specimens with different wood densities or orientations during loading. From the results, it can be concluded that the proposed statistical model adequately describes the fatigue behaviour of both the old, insect-damaged wood and the recent larch wood.

• Language: English
• Keywords: larch wood, burning characteristics, insect damage, equivalent fatigue life, Weibull’s probability density function, S-N curve
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering; BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2023
• Number of pages: 13 str.
• Numbering: Vol. 375, art. 130976
• PID: 20.500.12556/RUL-144806
• UDC: 630*8
• ISSN on article: 1879-0526
• DOI: 10.1016/j.conbuildmat.2023.130976
• COBISS.SI-ID: 145016835
• Publication date in RUL: 14.03.2023

Record is a part of a journal

• Title: Construction & building materials
• Shortened title: Constr. build. mater.
• Publisher: Elsevier
• ISSN: 1879-0526
• COBISS.SI-ID: 19590678

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0182
• Name: Razvojna vrednotenja

• Funder: ARRS - Slovenian Research Agency
• Project number: P4-0015
• Name: Les in lignocelulozni kompoziti