onr:"swepub:oai:DiVA.org:lnu-96898"
Search: onr:"swepub:oai:DiVA.org:lnu-96898" > Resonance and time-...
- 1 of 1
- Previous record
- Next record
- To hitlist
Resonance and time-of-flight methods for evaluating the modulus of elasticity of particleboards at different humid conditions
-
- Ahmed, Sheikh Ali, Senior Lecturer, 1977- (author)
- Linnéuniversitetet,Institutionen för skog och träteknik (SOT),Avancerade material,Group of Forest Products
-
- Adamopoulos, Stergios (author)
- Linnéuniversitetet,Institutionen för skog och träteknik (SOT),Group of Forest Products
-
- Poggi, Francesco (author)
- Linnéuniversitetet,Institutionen för skog och träteknik (SOT)
- show more...
- show less...
- (creator_code:org_t)
- 2020-06-30
- 2020
- English.
- In: Wood research. - Slovakia : Slovak Forest Products Research Institute. - 1336-4561. ; 65:3, s. 365-380
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Non-destructive testing of wood panels by either resonance or time-of-flight (TOF) methods provides possibilities for predicting their static bending properties. In the present study, three non-destructive devices (BING - Beam Identification by Non-destructive Grading by CIRAD, Montpellier, France, Fakopp Ultrasonic Timer and Sylvatest TRIO) were used for measuring the dynamic stiffness of different particleboard types. Fakopp Ultrasonic Timer and Sylvatest TRIO produce ultrasonic pulses to measure the sound velocity while BING uses resonance frequencies. Commercially produced particleboards with different thickness and densities were used to measure the dynamic modulus of elasticity (MOEdyn) in two directions (parallel and perpendicular to the production line) and at three different humidity levels (dry - 35%, standard - 65% and wet - 85% RH in constant temperature of 20°C ). MOEdyn of particleboards were correlated with the static moduli of elasticity (MOEstat) and rupture (MORstat). It was found that the non-destructive methods gave higher MOEdyn values in both production directions than that of MOEstat values. MOEdyn was found to decrease from dry to wet conditions. A very strong and statistically significant correlation existed between MOEdyn and static bending properties. MOEdyn correlated stronger to MOEstat than MORstat. At different humidity level, all three methods- Fakopp Ultrasonic Timer, BING and Sylvatest TRIO analyses showed good predicting capabilities to estimate MOEstat and MORstat of different particleboard types with high level of accuracy.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
Keyword
- Ultrasonic velocity
- vibration methods
- static bending
- dynamic modulus of elasticity
- wood panels
- Forestry and Wood Technology
- Skog och träteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Wood research (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Ahmed, Sheikh Al ...
- Adamopoulos, Ste ...
- Poggi, Francesco
- Walther, Thomas
- About the subject
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Materials Engine ...
- and Paper Pulp and F ...
- Articles in the publication
- Wood research
- By the university
- Linnaeus University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
