Starch Impregnation Effect of Testliner Paper on Stiffness of Honeycomb Panels with Slender Cells

The study aimed to determine the effect of impregnation with modified starch of recycled paper (Testliner) on elasticity constants of slender core cells and the influence on the elasticity constants and strength of honeycomb with facings made of thin particleboards. The experimental tests were carri...

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Main Authors: Michał Słonina, Jerzy Smardzewski
Format: Article
Language:English
Published: University of Zagreb, Faculty of Forestry and Wood Technology 2022-01-01
Series:Drvna Industrija
Subjects:
Online Access:https://hrcak.srce.hr/file/406559
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author Michał Słonina
Jerzy Smardzewski
author_facet Michał Słonina
Jerzy Smardzewski
author_sort Michał Słonina
collection DOAJ
description The study aimed to determine the effect of impregnation with modified starch of recycled paper (Testliner) on elasticity constants of slender core cells and the influence on the elasticity constants and strength of honeycomb with facings made of thin particleboards. The experimental tests were carried out on beams subjected to three-point bending. It was shown that slender hexagonal cells significantly differentiate their elastic properties and elastic properties of honeycomb panels in the main directions of orthotropy. Impregnation of the Testliner paper with modified starch reduces the values of the modulus of elasticity of the cells by about 8.8 % and reduces the values of the modulus of elasticity of the honeycomb panels by at least 6.9 %. Analytical solutions that do not take into account the structural form of the core cannot be used to calculate the modulus of elasticity of sandwich panels with hexagonal core cells.
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spelling doaj.art-e1eb26001d6c48d993a2b0bbce8663d12022-12-22T02:11:58ZengUniversity of Zagreb, Faculty of Forestry and Wood TechnologyDrvna Industrija0012-67721847-11532022-01-0173332733410.5552/drvind.2022.002415Starch Impregnation Effect of Testliner Paper on Stiffness of Honeycomb Panels with Slender CellsMichał Słonina0Jerzy Smardzewski1Poznan University of Life Sciences, Faculty of Forestry and Wood Technology, Department of Furniture Design, Poznan, PolandPoznan University of Life Sciences, Faculty of Forestry and Wood Technology, Department of Furniture Design, Poznan, PolandThe study aimed to determine the effect of impregnation with modified starch of recycled paper (Testliner) on elasticity constants of slender core cells and the influence on the elasticity constants and strength of honeycomb with facings made of thin particleboards. The experimental tests were carried out on beams subjected to three-point bending. It was shown that slender hexagonal cells significantly differentiate their elastic properties and elastic properties of honeycomb panels in the main directions of orthotropy. Impregnation of the Testliner paper with modified starch reduces the values of the modulus of elasticity of the cells by about 8.8 % and reduces the values of the modulus of elasticity of the honeycomb panels by at least 6.9 %. Analytical solutions that do not take into account the structural form of the core cannot be used to calculate the modulus of elasticity of sandwich panels with hexagonal core cells.https://hrcak.srce.hr/file/406559honeycombhexagonal cellorthotropyimpregnationelastic propertiesstrength
spellingShingle Michał Słonina
Jerzy Smardzewski
Starch Impregnation Effect of Testliner Paper on Stiffness of Honeycomb Panels with Slender Cells
Drvna Industrija
honeycomb
hexagonal cell
orthotropy
impregnation
elastic properties
strength
title Starch Impregnation Effect of Testliner Paper on Stiffness of Honeycomb Panels with Slender Cells
title_full Starch Impregnation Effect of Testliner Paper on Stiffness of Honeycomb Panels with Slender Cells
title_fullStr Starch Impregnation Effect of Testliner Paper on Stiffness of Honeycomb Panels with Slender Cells
title_full_unstemmed Starch Impregnation Effect of Testliner Paper on Stiffness of Honeycomb Panels with Slender Cells
title_short Starch Impregnation Effect of Testliner Paper on Stiffness of Honeycomb Panels with Slender Cells
title_sort starch impregnation effect of testliner paper on stiffness of honeycomb panels with slender cells
topic honeycomb
hexagonal cell
orthotropy
impregnation
elastic properties
strength
url https://hrcak.srce.hr/file/406559
work_keys_str_mv AT michałsłonina starchimpregnationeffectoftestlinerpaperonstiffnessofhoneycombpanelswithslendercells
AT jerzysmardzewski starchimpregnationeffectoftestlinerpaperonstiffnessofhoneycombpanelswithslendercells