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CRACKING AND ENERGY DISSIPATION IN CABBAGES
Author(s) -
HOLT J.E.,
SCHOORL D.
Publication year - 1983
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.1745-4603.1983.tb00337.x
Subject(s) - dissipation , cracking , dissipative system , drop (telecommunication) , materials science , compression (physics) , composite material , fracture mechanics , impact energy , energy (signal processing) , mechanics , structural engineering , mathematics , physics , engineering , thermodynamics , telecommunications , statistics
Whole cabbages were subjected to impact and quasi‐static compression, and it was observed that the main type of damage was cracking through the leaf layers. In static loading the cabbages withstood very high compression loads before major cracking began, with forces between 4000‐4500 N. On impact, cracking of cabbages occurred at drop heights of 0.25 m and greater. There is a very strong linear relationship between total leaf crack length and energy dissipated during the drop. The crack resistance of cabbage is described by both the slope of the crack length‐energy dissipative response and the intercept of the line on the energy axis. Three energy dissipative mechanisms operate during the compression loading of cabbages; energy is stored elastically to be recovered in rebound, energy is stored to be dissipated by crack propagation, and energy is dissipated by leaf movement. The energy dissipative mechanisms can be explained in terms of the structure of the whole cabbage and leaf tissue. Crack resistance is a useful property of cabbages. It may be used to evaluate cabbage varieties for texture and cabbage handling systems for damage.