Document Type : Research Paper

Authors

• Amir Nourbakhsh ¹
• Taghi Tabarsa ²
• Abolfazl Kargarfard ³
• Fardad Golbabaei ⁴

¹ Wood and forest products division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

² Pulp and Paper Department, Faculty of Wood & Paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.

³ Wood and Forest Products Science Research Division, Research Institute of Forests and Rangelands, Tehran, Iran,

⁴ Wood and Forest Products Science Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO) P.O. Box 13185-116, Tehran, Iran

Abstract

Laminated veneer lumber (L. V. L) manufactured from Maple and Alder wood is investigated. Three levels of layer thicknesses of 2, 3 and 4mm. were investigated. Bending strength (MOR and MOE), Compression
The results of this investigation indicated that laminated wood strength of samples produced from Alder layers are superior to Maple. Statistical analysis of the results showed that the effect of wood species on strength properties was significantly different at 99% level. Layer thicknesses also showed significant effect on strength increasing layer thicknesses from 2 to 4 mm. caused a reduction on MOE and improved impact properties.
The results of this investigation also showed that Alder layers at 4 mm. Is superior to Maple layers in impact properties.

Keywords

• LAMINATED VENEER LUMBER
• ALDER
• ALNUS GLOTINOSA MAPLE
• AEER INSIGIN MODULUS OF RUPTURE
• Modulus of elasticity
• IMPACT BENDING AND COMPRESSION PARALLEL TO GRAIN

Main Subjects

• Composite wood products