Study of the plywood panels properties using geostatistic

Cleverson Pinheiro,Simone Simões Amaral,Marcos Valério Ribeiro,Ivaldo De Domenico Valarelli,Cristiane Inácio De Campos,Carlos Alberto Oliveira De Matos,Manoel Cléber De Sampaio Alves

doi:10.14807/ijmp.v7i4.446

Abstract

Plywood panels have multiple applications in construction, in the furniture industry and packaging. There is a need to improve techniques for assessing quality of these products. This paper proposed the use of geostatistics to evaluate the behavior of the of the plywood panel. The physical properties were analyzed (moisture content, density and water absorption) in the full extent of the plywood panel of Eucalyptus sp. , bonded with adhesive single-component polyurethane. For analysis, three panels of five layers, with dimensions of 350 x 350 x 15.5 mm each, were employed. The tests were based on the standards EN 323-2000, EN 322-2000 and ABNT NBR 9486- 2011. Statistical modeling was performed using the R software, using the methodology of geostatistics. The average results were compared with values reported in the literature. The average water absorption was 7% higher in comparison with other studies, which used urea formaldehyde. So, the product can be applied only to interior and their use is not advisable for floors; the average moisture content and density were within the average values found in the literature. The behavior of the properties analyzed using the geostatistical model was not homogeneous, with large variations. Geostatistics was considered an appropriate tool for the study of the variability of the plywood panel properties, and can be applied for better quality control of them.

Highlights

In order to maintain its competitiveness, the company has invested in innovative tools focused on the process management, production process and product, as discussed by Petter et al (2013)
The present study aims to assess the variability of physical properties in the entire size of the plywood panel Eucalyptus sp., using geostatistics
Were shoed values found in the literature for moisture content, specific mass and water absorption

Summary

INTRODUCTION

In order to maintain its competitiveness, the company has invested in innovative tools focused on the process management, production process and product, as discussed by Petter et al (2013). Geostatistics is a name associated with a class of techniques used to analyze and infer values of a variable distributed in space and/or time (CAMARGO, 1997) In this way, the analysis of the panel properties, involving the method of geostatistics, enables higher understanding of their variability and assists in the identification of the causes of the defects, ensuring the quality of the product. The analysis of the panel properties, involving the method of geostatistics, enables higher understanding of their variability and assists in the identification of the causes of the defects, ensuring the quality of the product In this context, the present study aims to assess the variability of physical properties in the entire size of the plywood panel Eucalyptus sp., using geostatistics

Plywood panels preparation

Statistical analysis

Plywood panel characterization

Variability analysis of the samples in the panel

CONCLUSION