Back to Search
Start Over
Experimental Research and Numerical Analysis of the Elastic Properties of Paper Cell Cores before and after Impregnation
- Source :
- Materials, Materials, Vol 13, Iss 2058, p 2058 (2020), Volume 13, Issue 9
- Publication Year :
- 2020
-
Abstract
- The research hypothesis states that the impregnation of the honeycomb paper core of lightweight sandwich panels with modified starch, sodium silicate and epoxy resin (LiquidWood&reg<br />) resin has a significant effect on its elastic properties. In this study, a recycled paper was used in three thicknesses, seven types of cell shapes, including two after numerical optimization and three types of impregnating agents. The method of digital image analysis determined the elastic constants of manufactured paper cores, which were subjected to axial compression in two directions. Based on the experimental results, elastic constants of the cores were calculated and compared with the results of numerical calculations. It has been shown that each of the impregnating solutions used improved the stiffness of the paper core. The best results were obtained for LiquidWood&reg<br />epoxy resin and modified starch. An important parameter of cell geometry affecting their rigidity is the angle of the cell wall &phi<br />as well as the arrangement of the common cell wall in relation to the direction of load. The numerical models developed were positively verified.
- Subjects :
- Materials science
general_materials_science
020101 civil engineering
Rigidity (psychology)
02 engineering and technology
cell geometry
lcsh:Technology
Article
0201 civil engineering
epoxy resin
DIC
honeycomb
medicine
Honeycomb
General Materials Science
Composite material
lcsh:Microscopy
Sandwich-structured composite
lcsh:QC120-168.85
FEM
lcsh:QH201-278.5
lcsh:T
Numerical analysis
starch
sodium silicate
Stiffness
Epoxy
021001 nanoscience & nanotechnology
Finite element method
Core (optical fiber)
lcsh:TA1-2040
visual_art
visual_art.visual_art_medium
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
medicine.symptom
0210 nano-technology
lcsh:Engineering (General). Civil engineering (General)
lcsh:TK1-9971
Subjects
Details
- ISSN :
- 19961944
- Volume :
- 13
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- Materials (Basel, Switzerland)
- Accession number :
- edsair.doi.dedup.....05866c1c4c093c285e087c345a273de0