System for measuring the crispiness of materials

Details System for measuring the crispiness of materials System for measuring the crispiness of materials

1996-10-22

1998-10-27

Chilcot, Richard

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73866, G01N 308

Patent

active

058279741

ABSTRACT:
A device and a method for the determination of a Fractal number representative of the crispiness and crunchiness of various materials, especially edible materials. The material to be tested is crushed by the application of a given force by a piston moving in a cylinder, which crushes such substance, whereby noise is created, recorded and subsequently evaluated. A preferred device comprises a microphone positioned beneath a baseplate in the cylinder of the device, on which plate the sample is positioned, which microphone picks up the noise which is subsequently evaluated. According to a preferred embodiment an opening is provided in the cylinder for inserting and removing the sample to be tested.

REFERENCES:
patent: 5005415 (1991-04-01), Holroyd
patent: 5289387 (1994-02-01), Higo et al.
Lord et al. "Acoustic Emission Behavior of Sand . . . ", Material Eval; May 1976 pp. 103-108.
James et al. "Acoustic Emmission Test Facility", The Review of Scientif Inst. vol. 42, No. 8 Aug. 1971, pp. 1131-1136.

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