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Journal articles
Open Access
An inside view on impulse drying phenomena by modelling, TAPPI JOURNAL, October 2000, Vol. 83(10)

An inside view on impulse drying phenomena by modelling, TAPPI JOURNAL, October 2000, Vol. 83(10)

Journal articles
Open Access
Paper surface makeup process observed by ultrasound, TAPPI JOURNAL, October 2000, Vol. 83(10)

Paper surface makeup process observed by ultrasound, TAPPI JOURNAL, October 2000, Vol. 83(10)

Journal articles
Open Access
Impulse drying of board grades; pilot production trials, TAPPI JOURNAL, September 2000, Vol. 83(9)

Impulse drying of board grades; pilot production trials, TAPPI JOURNAL, September 2000, Vol. 83(9)

Journal articles
Open Access
Computational modelling of paper drying machines, TAPPI JOURNAL, September 2000, Vol. 83(9)

Computational modelling of paper drying machines, TAPPI JOURNAL, September 2000, Vol. 83(9)

Journal articles
Open Access
Qualification of welding procedures for duplex stainless steels, TAPPI JOURNAL, September 2000, Vol. 83(9)

Qualification of welding procedures for duplex stainless steels, TAPPI JOURNAL, September 2000, Vol. 83(9)

Journal articles
Open Access
Effect of entrained air on the performance of a pressure screen, TAPPI JOURNAL, September 2000, Vol. 83(9)

Effect of entrained air on the performance of a pressure screen, TAPPI JOURNAL, September 2000, Vol. 83(9)

Journal articles
Open Access
Machine Vision Applications Using Binary and Grayscale Morph

Machine Vision Applications Using Binary and Grayscale Morphology, 1994 Engineering Conference Proceedings

Journal articles
Magazine articles
Open Access
Application of fuzzy TOPSIS in the Analyze phase of the DMAIC cycle to aid decision-making, TAPPI Journal April 2020

ABSTRACT: This paper reports the use of multicriteria analysis in the Analyze phase of the DMAIC (Define-Measure-Analyze-Improve-Control) cycle for continuous improvement. The research was carried out in a tissue paper factory located in southern Brazil. A sample of 64 parts of 16 different reels of recycled paper was used. A problem regarding paper quality variability was detected, presenting a scrap index ranging between 9% and 23%, compromising machine productivity and product sales. This motivated the implementation of a structured project supported by the application of the DMAIC cycle. The project team (machine operators, maintenance staff, supervisor, and data analyst) defined the evaluation criteria and determined the control intervals and their equivalence with linguistic variables to support the necessary evaluations for the application of fuzzy TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution). The criteria were C1-Longitudinal Strength (Kgf), C2-Longitudinal Elongation (mm), C3-Cross-strength (kgf), C4-Cross-elongation (mm), C5-Weight (g/m²), and C6-Humidity (%). The results showed that samples with the same ranking had the lowest scrap indexes in the subsequent process. Also, the criterion C5 had a more significant impact on the quality of the product than the other criteria, which was determined from the DMAIC sequence. Improvements related to C5 should be prioritized. The fuzzy TOPSIS method presented is a flexible tool, adapting itself to the solution of the problem and contributing to the decision-making process.

Journal articles
Open Access
AOX Content of Paper Manufactured with 'Chlorine Free' Pulps

AOX Content of Paper Manufactured with 'Chlorine Free' Pulps, 1995 Papermakers Conference Proceedings

Journal articles
Open Access
Improving Softwood Mechanical Pulp Properties with Ophiostom

Improving Softwood Mechanical Pulp Properties with Ophiostoma Piliferum, 1995 Pulping Conference Proceedings

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