Monitoring critical defects of creep rupture in oriented strandboard using acoustic emission: incorporation of EN300 standard

This creep rupture study in commercial oriented strandboard (OSB) used a 4-point flexural test to evaluate the dynamic property changes of a 300x1,000-mm specimen using an acoustic emission (AE) system. Compared to deflection, AE events were more sensitive to damage accumulation than deflection to f...

Full description

Saved in:
Bibliographic Details
Published in:Wood science and technology 2005-05, Vol.39 (3), p.199-214
Main Authors: Vun, R.Y, deHoop, C, Beall, F.C
Format: Article
Language:English
Subjects:
Acoustic emission
Acoustic properties
acoustics
Applied sciences
Compression
Control limits
crirical flaw
Damage accumulation
Defects
Deflection
Density
Emission analysis
Exact sciences and technology
Fractures
Inspection
nondestructive methods
oriented strandboards
Polymer industry, paints, wood
product defects
product quality standards
Rupture
Rupturing
Strandboard
structural panel standards
ultrasonics
Wood-based materials
Wood. Paper. Non wovens
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This creep rupture study in commercial oriented strandboard (OSB) used a 4-point flexural test to evaluate the dynamic property changes of a 300x1,000-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.
ISSN:0043-7719
1432-5225
DOI:10.1007/s00226-004-0278-9