Document Type : Research Paper

Authors

• Mohammad reza Ghaznavi ¹
• Mehran Rohnia ²
• Abdolsaber Yaghmaeipour ³

¹ M.Sc. Student of Wood and Paper Science and Technology, Karj Branch, Islamic Azad University, Karaj, Iran,

² Associate Prof., Wood and Paper Science and Technology group, Karj Branch, Islamic Azad University, Karaj, Iran

³ M.Sc. Student of Wood and Paper Science and Technology, Karaj Branch, Islamic Azad University, Karaj, Iran

Abstract

The possibility of estimating some acoustical properties of particleboard panels such as "Acoustical coefficient" and "Acoustical Converting efficiency" using vibrational non-destructive techniques was investigated. Particleboard plates with the dimensions of 50×50, 100×50 and 150×50 were used. For each plate, three replicated samples were prepared and after conditioning and the measurement of weight and dimensions, the flexural vibration test was performed on plate free-free test. In order to be ensured of the accuracy of the test, panels were converted to beams with the dimensions of 500×50×16 mm and then the same test was repeated on these samples. The results obtained from flexural vibration test of plates and beams were compared. The results indicated that it is possible to evaluate the Acoustic Coefficient and Acoustical Converting Efficiency factors with adequate accuracy using the testing method used in this study.

Keywords

• Particleboard
• non-destructive test
• Vibration
• acoustical converting efficiency
• Acoustic coefficient