SciELO - Scientific Electronic Library Online

 
vol.26 número4POLPAÇÃO KRAFT E KRAFT/AQ DA MADEIRA PRÉ-HIDROLISADA DE HÍBRIDO DE Eucalyptus urophylla x grandisRELAÇÕES ENTRE TIPO DE VIZINHANÇA E EFEITOS DE BORDA EM FRAGMENTO FLORESTAL índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Ciência Florestal

versão impressa ISSN 0103-9954versão On-line ISSN 1980-5098

Resumo

SCHNEID, Guinter Neutzling; OLIVEIRA, Rubens Chaves de  e  VIEIRA, Osvaldo. SENSITIVITY ANALYSIS BY ARTIFICIAL NEURAL NETWORK (ANN) OF VARIABLES THAT INFLUENCE THE DIAGONAL TWIST IN A PAPERBOARD INDUSTRIAL MACHINE. Ciênc. Florest. [online]. 2016, vol.26, n.4, pp.1291-1299. ISSN 1980-5098.  https://doi.org/10.5902/1980509825149.

The dimensional stability of the paper may change due to middle exchange moisture, releasing the latent stress acquired into the manufacturing process. One result of this tension release is the diagonal curl. This study aims to conduct a sensitivity analysis of the different input's variables of an industrial paper machine, along with some laboratory measurements, in order to identify the importance in production of paperboard quality control and relate to the property of the paper called twist. A survey was made of the production history, relating to 2012, to observe the products with the highest quality losses. From this, they were correlated with the critical points of measurement profile in the machine cross direction and consequently with the paper. It was found some changes once the variables correlated with twist, referring to the three analyzes of the profile (tender side, middle and drive side). It was revealed, from the sensitivity analysis, that the most important and sensitive variables, respectively for the tender side, middle and drive side, were total flow from the top layer, vapor pressure in the 6th group of drying cylinders and mass flow side of the bottom layer of the formation of paperboard.

Palavras-chave : twist; sensitivity analysis; dimensional stability; paperboard..

        · resumo em Português     · texto em Inglês     · Inglês ( pdf )