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EFFECT OF SAMPLE VOLUME ON THE COMPRESSIVE FORCE‐DEFORMATION CURVES OF CORN FLAKES TESTED IN BULK 1
Author(s) -
NIXON RICHARD,
PELEG MICHA
Publication year - 1995
Publication title -
journal of texture studies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.593
H-Index - 54
eISSN - 1745-4603
pISSN - 0022-4901
DOI - 10.1111/j.1745-4603.1995.tb00784.x
Subject(s) - cushioning , materials science , volume (thermodynamics) , deformation (meteorology) , composite material , fractal dimension , magnitude (astronomy) , mathematics , fractal , mineralogy , analytical chemistry (journal) , thermodynamics , chemistry , physics , mathematical analysis , chromatography , astronomy
Two national brands of cornflakes were compressed in cells of various dimensions (height 38–76 mm and diameter 50–91 mm) using a Universal Testing Machine. The stress‐strain (σ vs. ε) relationships could be described by a four parameter model originally developed for cellular materials, i. e., σ(ε) = k 1 ε n1 + k 2 ε n 2 where the k's and n's are constants (n 1 < 1, n 2 > 1 ). The scatter around the fitted relationships was normalized and its jaggedness determined in terms of an apparent fractal dimension and the mean magnitude of the power spectrum after filtering. The magnitude of both depended on the cell diameter and height indicating that the observed degree of jaggedness is influenced simultaneously by “averaging” and “cushioning” effects.