Monitoring critical defects of creep rupture in oriented strandboard using acoustic emission: Incorporation of EN300 standard
Document Type
Article
Publication Date
5-1-2005
Abstract
This creep rupture study in commercial oriented strandboard (OSB) used a 4-point flexural test to evaluate the dynamic property changes of a 300×1,000-mm specimen using an acoustic emission (AE) system. Compared to deflection, AE events were more sensitive to damage accumulation than deflection to final failure. Specimens were artificially notched on either the tension- or compression-side and were subjected to 80% stress level at ambient conditions. Defects on the compression side of the bending specimen were found to be more critical than on the tension side in creep-rupture. The in-plane fractures followed patterns of the valleys of low-density spots as defect trenches, demonstrating adverse effects of high variation in horizontal density. An impetus and rationale to incorporate regulatory quality inspection standards and product certification of structural OSB based on the control limits of ±10% panel density as stipulated in EN300 standard is discussed. © Springer-Verlag 2005.
Publication Source (Journal or Book title)
Wood Science and Technology
First Page
199
Last Page
214
Recommended Citation
Vun, R., Dehoop, C., & Beall, F. (2005). Monitoring critical defects of creep rupture in oriented strandboard using acoustic emission: Incorporation of EN300 standard. Wood Science and Technology, 39 (3), 199-214. https://doi.org/10.1007/s00226-004-0278-9