The susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying

In this study, the susceptibility of poplar (P. nigra) tension and normal wood to collapse during drying was investigated. Thus, the poplar boards with nominal dimensions of 100 × 50 × 25 mm (L×T×R) were dried using three different drying schedules. In schedule A, the boards were dried under constan...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Asghar Taremian, Mahdi Shahverdi, Saeid Eshaghi, Hadi Dashti
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2011
Materias:	POPLAR collapse drying drying schedule Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/1abfcf3ece614b80870a6c910a25ea81
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:1abfcf3ece614b80870a6c910a25ea81
record_format	dspace
spelling	oai:doaj.org-article:1abfcf3ece614b80870a6c910a25ea812021-12-02T02:26:12ZThe susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying1735-09132383-112X10.22092/ijwpr.2011.117238https://doaj.org/article/1abfcf3ece614b80870a6c910a25ea812011-09-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117238_67be8209a81ee31d5389f4b57e3865a0.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XIn this study, the susceptibility of poplar (P. nigra) tension and normal wood to collapse during drying was investigated. Thus, the poplar boards with nominal dimensions of 100 × 50 × 25 mm (L×T×R) were dried using three different drying schedules. In schedule A, the boards were dried under constant conditions (dry-bulb temperature of 600C and wet-bulb temperature of 440C); in schedules B and C, they were dried under a time-based schedule, consisting of 4 and 2 steps, respectively. The initial dry-bulb temperature in schedules A, B and C were selected as 60, 60 and 820C, respectively. After drying, the severity of collapse in the cross section of boards was determined by scanning electron microscope (SEM). The results revealed that collapse did not occur in the boards dried by schedule A. Collapse occurred slightly in the boards dried by schedule B and severe collapse and cell wall degradation developed in the boards dried by schedule C. In the latter, gelatinous layer of tension wood was separated from fiber cell walls. Tension wood was more sensitive to collapse than normal wood. Based on the results, it can be concluded that the occurrence of collapse is influenced by initial dry-bulb temperature rather than wet-bulb depression.Asghar TaremianMahdi ShahverdiSaeid EshaghiHadi DashtiRegional Information Center for Science and Technology (RICeST)articlePOPLARcollapsedryingdrying scheduleForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 26, Iss 3, Pp 579-591 (2011)
institution	DOAJ
collection	DOAJ
language	FA
topic	POPLAR collapse drying drying schedule Forestry SD1-669.5
spellingShingle	POPLAR collapse drying drying schedule Forestry SD1-669.5 Asghar Taremian Mahdi Shahverdi Saeid Eshaghi Hadi Dashti The susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying
description	In this study, the susceptibility of poplar (P. nigra) tension and normal wood to collapse during drying was investigated. Thus, the poplar boards with nominal dimensions of 100 × 50 × 25 mm (L×T×R) were dried using three different drying schedules. In schedule A, the boards were dried under constant conditions (dry-bulb temperature of 600C and wet-bulb temperature of 440C); in schedules B and C, they were dried under a time-based schedule, consisting of 4 and 2 steps, respectively. The initial dry-bulb temperature in schedules A, B and C were selected as 60, 60 and 820C, respectively. After drying, the severity of collapse in the cross section of boards was determined by scanning electron microscope (SEM). The results revealed that collapse did not occur in the boards dried by schedule A. Collapse occurred slightly in the boards dried by schedule B and severe collapse and cell wall degradation developed in the boards dried by schedule C. In the latter, gelatinous layer of tension wood was separated from fiber cell walls. Tension wood was more sensitive to collapse than normal wood. Based on the results, it can be concluded that the occurrence of collapse is influenced by initial dry-bulb temperature rather than wet-bulb depression.
format	article
author	Asghar Taremian Mahdi Shahverdi Saeid Eshaghi Hadi Dashti
author_facet	Asghar Taremian Mahdi Shahverdi Saeid Eshaghi Hadi Dashti
author_sort	Asghar Taremian
title	The susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying
title_short	The susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying
title_full	The susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying
title_fullStr	The susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying
title_full_unstemmed	The susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying
title_sort	susceptibility of poplar tension and normal wood (p. nigra) to collapse during drying
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2011
url	https://doaj.org/article/1abfcf3ece614b80870a6c910a25ea81
work_keys_str_mv	AT asghartaremian thesusceptibilityofpoplartensionandnormalwoodpnigratocollapseduringdrying AT mahdishahverdi thesusceptibilityofpoplartensionandnormalwoodpnigratocollapseduringdrying AT saeideshaghi thesusceptibilityofpoplartensionandnormalwoodpnigratocollapseduringdrying AT hadidashti thesusceptibilityofpoplartensionandnormalwoodpnigratocollapseduringdrying AT asghartaremian susceptibilityofpoplartensionandnormalwoodpnigratocollapseduringdrying AT mahdishahverdi susceptibilityofpoplartensionandnormalwoodpnigratocollapseduringdrying AT saeideshaghi susceptibilityofpoplartensionandnormalwoodpnigratocollapseduringdrying AT hadidashti susceptibilityofpoplartensionandnormalwoodpnigratocollapseduringdrying
_version_	1718402452907098112

The susceptibility of poplar tension and normal wood (P. nigra) to collapse during drying

Ejemplares similares