Mechanical Performance of OSL Made of Hungarian Indigenous and Hybrid Poplar Strands

Bejó, László és Altaher Omer Ahmed, Ahmed és Alpár, Tibor László és Báder, Mátyás (2026) Mechanical Performance of OSL Made of Hungarian Indigenous and Hybrid Poplar Strands. APPLIED SCIENCES-BASEL, 16 (11). ISSN 2076-3417

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Absztrakt (kivonat)

Strand-based structural products offer an excellent alternative material for wood-based construction, which can be produced from low-quality raw materials. Indigenous poplar is becoming an increasingly important raw material, but its industrial utilization requires a new approach due to its unfavorable growth characteristics. The study introduced in this paper was aimed at developing Oriented Structural Lumber (OSL) from Hungarian poplar and comparing the potential of indigenous vs. hybrid poplar materials. Laboratory-scale (400 × 400 × 30 mm) OSL was produced, first to find viable manufacturing parameters for poplar OSL based on modulus of rupture (MOR), internal bond strength, and thickness swelling, and then to compare a wide range of mechanical and physical characteristics of OSL made of the two types of poplar. The first part of the study showed that a resin content of 3.4%, 650 kg/m3 target density, and 750 s of pressing time gave the best results for producing 30 mm thick OSL in laboratory conditions. The produced boards were comparable to softwood and bamboo OSL developed in earlier studies, and their performance was comparable to a higher grade of structural lumber (C35) in terms of density and MOR, as measured on small laboratory-scale specimens. There were only minor differences in in-plane and out-of-plane compression and tension between indigenous and hybrid poplar boards. Hybrid poplar performed better in terms of bending, but indigenous poplar had significantly higher screw withdrawal resistance, and lower thickness swelling and water absorption. Overall, poplar OSL is promising as a potential new product, and indigenous poplar can be used to replace hybrid poplar in this application without a decline in mechanical and physical performance.

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műszaki tudományok > anyagtudományok és technológiák
műszaki tudományok > faipari tudományok

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Mű tipusa:	Cikk
SWORD Depositor:	Teszt Sword
Felhasználó:	Csaba Horváth
A mű MTMT azonosítója:	MTMT:37309453
Dátum:	27 Máj 2026 07:37
Utolsó módosítás:	27 Máj 2026 07:37
URI:	http://publicatio.uni-sopron.hu/id/eprint/4069

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