2005
DOI: 10.1063/1.1851471
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Design of a high precision falling-ball viscometer

Abstract: The increase in uncertainty throughout the viscosity scale being the principal disadvantage of capillary viscometry, the BNM-LNE decided to develop an absolute falling-ball viscometer making it possible to cover a wide range of viscosity while keeping a weak uncertainty. The measurement of viscosity then rests on the speed limit measurement of falling ball, corrected principal identified effects (edge effects, inertial effects, etc). An experimental bench was developed in order to reach a relative uncertainty … Show more

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Cited by 51 publications
(49 citation statements)
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“…B depends on A PEG ∕A pore in a nontrivial way, which can only be estimated numerically (52). Here, it is part of the free parameter ξ.…”
Section: Theorymentioning
confidence: 99%
“…B depends on A PEG ∕A pore in a nontrivial way, which can only be estimated numerically (52). Here, it is part of the free parameter ξ.…”
Section: Theorymentioning
confidence: 99%
“…Metode lain yang sudah dikenal sejak lama untuk mendapatkan nilai viskositas adalah metode bola jatuh (falling ball method) dengan prinsip Hukum Stokes (Gambar 1) (Leont'ev & Vakhrushev 1976;Lommatzsch et al 2001;Fujita et al 2003;Fujita et al 2005;Brizard et al 2005).…”
Section: Pendahuluanunclassified
“…Mengacu pada Gambar 1, maka berlaku persamaan berikut: Brizard et al (2005). Pengukuran dengan menggunakan perekaman citra dilakukan dengan dua tahap, yaitu: 1) perekaman, dan 2) pengolahan citra dengan melakukan perbandingan antara dua citra saat bola jatuh melewati titik referensi pertama dan titik referensi kedua.…”
Section: Pendahuluanunclassified
“…1 The viscosity reflects the resistance of a fluid to flow under an applied shear stress and many different types of viscometers have been developed to achieve this measurement. They may be classified in four main families: capillary viscometers, [2][3][4] rotational or sliding viscometers, 5, 6 falling spheres 7,8 or slender objects, 9 and vibrational viscometers. 10 In the present study, a viscometer based on the measurement of the friction force exerted by a flowing fluid is presented.…”
Section: Introductionmentioning
confidence: 99%