Method for determining a particle shape

US10088404B2 · kind B2 · utility

Assignee

• Parsum Gesellschaft fuer Partikel-, Stroemungs- und Umweltmesstechnik mbH · DE

Inventors

• Stefan Dietrich · Potsdam, DE
• Dieter Petrak · Weimar, DE
• Michael Koehler · Oberlungwitz, DE
• Guenter Eckardt · Nuremberg, DE

Key dates

• Filing date: Jun 29, 2015
• Grant date: Oct 2, 2018
• Expiry date: Jun 29, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2015/0294
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for determining a shape of particles in a distribution with reduced measuring and analyzing complexity includes detecting the number of particles, measuring and storing a particle chord length for each particle as a measurement for particle size and measuring at least first and second distributions of the particle size from the particle chord length measured for each particle. The first distribution is based on a first quantity type, the second distribution is based on a second quantity type and the quantity types correspond to different powers of the particle size. A first distribution parameter, corresponding to a cumulative or density distribution, of the first distribution is set into a distribution parameter ratio with a second distribution parameter, corresponding to a cumulative or density distribution, of the second distribution. An aspect ratio is determined from the distribution parameter ratio as a value characterizing the shape of the particles.