Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Modelling of stress development during drying and relief during steaming in Pinus radiata lumber
Autore:
Pang, S;
Indirizzi:
New Zealand Forest Res Inst, Rotorua, New Zealand New Zealand Forest Res Inst Rotorua New Zealand t, Rotorua, New Zealand
Titolo Testata:
DRYING TECHNOLOGY
fascicolo: 8, volume: 18, anno: 2000,
pagine: 1677 - 1696
SICI:
0737-3937(2000)18:8<1677:MOSDDD>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOISTURE MOVEMENT; WOOD; TIMBER; BOARD;
Keywords:
mechano-sorptive creep; moisture content; moisture shrinkage; softwood drying; stress strain; wood temperature;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Pang, S New Zealand Forest Res Inst, Private Bag 3020, Rotorua, New Zealand New Zealand Forest Res Inst Private Bag 3020 Rotorua New Zealand
Citazione:
S. Pang, "Modelling of stress development during drying and relief during steaming in Pinus radiata lumber", DRY TECHNOL, 18(8), 2000, pp. 1677-1696

Abstract

A one-dimensional stress model was proposed for drying of radiata pine lumber, which has considered wood moisture shrinkage, instantaneous stress-strain relationships, mechano-sorptive creep, time-induced creep and temperature effects. In addition, wood hardening behaviour in the plastic region anddifferences between stress increase and decrease have been taken into account. The proposed stress model can predict stress development and relief ina drying cycle once the required wood mechanical and rheological properties have been quantified. Drying experiments were performed to dry Pinus radiata sapwood boards of 100x40x590 mm in a tunnel dryer. In the experiment, wood temperature, moisture content gradient and residual stress through board thickness were measured. The drying cycle included HT drying, cooling and final steam conditioning. The measured stress patterns were in agreement with the model predictions. However, more accurate calculations will be made once the detailed experimental data for radiata pine wood mechanical and rheological properties are available.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 07:06:53