PSI - Issue 81

Oleksandr Svyrydiuk et al. / Procedia Structural Integrity 81 (2026) 504–508

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et al. (2025); Correal et al. (2014); Roos et al. (2010); Landis et al. (2002)). It also makes it possible to span relatively large building openings. (Pavluk et al. (2025); Datsiuk et al. (2024); Gomon et al. (2023)). In recent years, elements and structures based on wood veneer have been increasingly used (Omotayo et al. (2024); Diza Lestari et al. (2018); Heidarzadeh et al. (2026); Ghasemi et al. (2026)). This approach enables even broader use of wooden structures made from different wood species, as a single element may incorporate several types of wood.

Nomenclature σ с

wood stress;

relative strains of wood;

u с

ultimate short-term strength of wood; relative critical deformations of wood; relative residual strains of wood

f c,0,d u c,0,d u c,fin

The aim of this study is to conduct a series of experimental investigations aimed at determining the strength and deformation characteristics of specimens made from wood veneer under axial compression along the grain, subjected to a single short-term load, at both pre-critical and post-critical stages of their behavior.

2. Methods of experimental research A series of experimental specimens in the form of prisms with dimensions of 45 × 45 × 150 mm based on wood veneer were manufactured (Fig. 1). The geometric dimensions of the specimens were selected in compliance with current regulatory standards and to ensure the representativeness of the experimental results. The thickness of individual wood veneer layers was 3 mm. This ensured a multilayered structure of the specimens and complied with the technological requirements for their fabrication. The prisms were manufactured under factory conditions with strict adherence to established regimes of bonding, pressing, and conditioning. These measures minimized the influence of production defects and ensured material uniformity. The use of an industrial manufacturing method for the specimens made it possible to obtain stable physical and mechanical properties of the material and ensure the reproducibility of test results. It also allowed the experimental conditions to closely approximate the real operating conditions of structural elements based on wood veneer.

a

b

Fig. 1. Prism made of wood veneer for experimental investigations: (a) external view; (b) specimen with dimensions.

The specimens were tested in laboratory conditions using a universal testing machine under axial compression along the wood fibers with a single short-term load. The tests were carried out in accordance with current standards (DBN B.2.6-161:2017, Eurocode 5:2004, DSTU 3129:2015, DSTU EN 380:2008). The load was applied in a rigid mode with continuous increase until the specimens failed. The moisture content of the prisms was determined in accordance with DSTU 4922:2008 before starting the experimental