Optimization of the paper permeability tester using Robust design

K. Watanabe, Z. Miyagi, R. Dolah, K. Takahashi

Research output: Contribution to journalConference article


This paper is using practical case study of robust design engineering. Effect of control factors and optimum condition is studied to design a more robust Paper Permeability Tester. In this study, robustness means decreasing uncertainty that is validity of measurement results with the Tester. Robustness is required to ensure the reliability for the measurement results in the field of the measurement tester. Thus, orthogonal array L18 is employed and the optimum condition was obtained for decreasing the measurement dispersion. Experiment reproducibility of Signal-to-Noise Ratio and sensitivity were confirmed within 20%. SNR value is linearly depends on air permeance value. When the value of air permeance is small, it tends to provide small SNR. Flow rate in nozzle was considered as a major cause. Stability of flow in the nozzle is significant to design the Tester to be more robustness. In a case of a flow under the rapidly, SNR is small due unstable flow. Sensitivity with nozzle diameter was dramatically large. Nozzle specification tolerance was found to have strong influence on measurement result.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalJurnal Teknologi (Sciences and Engineering)
Issue number4
Publication statusPublished - 1 Jan 2014
Event1st International Conference on Robust Quality Engineering, ICRQE 2013 - Kuala Lumpur, Malaysia
Duration: 24 Apr 201325 Apr 2013



  • Permeability tester
  • Permeance
  • Robust parameter design
  • Signal-to-noise ratio
  • Tolerance design

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