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Magazine articles
Open Access
Mount st. helens - 20 years of recovery, TAPPI JOURNAL, May 2000, Vol. 83(5)

Mount st. helens - 20 years of recovery, TAPPI JOURNAL, May 2000, Vol. 83(5)

Magazine articles
Open Access
Imagine more in coatings, TAPPI JOURNAL, May 2000, Vol. 83(5)

Imagine more in coatings, TAPPI JOURNAL, May 2000, Vol. 83(5)

Magazine articles
Open Access
Suppliers investing in pilot coater facilities, TAPPI JOURNAL, May 2000, Vol. 83(5)

Suppliers investing in pilot coater facilities, TAPPI JOURNAL, May 2000, Vol. 83(5)

Magazine articles
Open Access
Improving dryer performance, TAPPI JOURNAL, May 2000, Vol. 83(5)

Improving dryer performance, TAPPI JOURNAL, May 2000, Vol. 83(5)

Magazine articles
Open Access
Pitfalls of trading market pulp on the internet, TAPPI JOURNAL, November 2000, Vol. 83(11)

Pitfalls of trading market pulp on the internet, TAPPI JOURNAL, November 2000, Vol. 83(11)

Magazine articles
Open Access
Paper companies adopt sophisticated techniques to win customers, TAPPI JOURNAL, October 2000, Vol. 83(10)

Paper companies adopt sophisticated techniques to win customers, TAPPI JOURNAL, October 2000, Vol. 83(10)

Magazine articles
Open Access
The role of science in setting the environmental agenda, TAPPI JOURNAL, September 2000, Vol. 83(9)

The role of science in setting the environmental agenda, TAPPI JOURNAL, September 2000, Vol. 83(9)

Magazine articles
Open Access
The r & t system: everyone is responsible for innovation, TAPPI JOURNAL, September 2000, Vol. 83(9)

The r & t system: everyone is responsible for innovation, TAPPI JOURNAL, September 2000, Vol. 83(9)

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.

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