Fourier Power Spectrum as a Measure of Line Jaggedness
Fourier Power Spectrum as a Measure of Line Jaggedness
The compressive mechanical signatures of dry cereals and snacks, especially puffed, are characteristically irregular and irreproducible. These signatures’ degree of jaggedness, however, is remarkably reproducible and can be used as a measure of the cereal or snack’s brittleness and perceived crunchiness. One way to quantify a signature’s degree of jaggedness is in terms of the mean magnitude of its power spectrum, after filtering out the low frequencies. This Demonstration simulates force-displacement curves of varying degrees of jaggedness and their conversion into truncated power spectra using a Fourier transform.