Stress relaxation of dates at khalal and rutab stages of maturity

Hassan, Bakri H.; Alhamdan, Abdullah M.; Elansari, Atef M.

doi:10.1016/j.jfoodeng.2004.04.014

Cited by 48 publications

(43 citation statements)

References 15 publications

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“…Stress relaxation data are interpreted using the Maxwell model or a generalised Maxwell model, as commonly applied for various materials [34], [35], [36], [37], [38] and [39].…”

Section: Introductionmentioning

confidence: 99%

Evolution of mechanical properties and final textural properties of resorcinol–formaldehyde xerogels during ambient air drying

Léonard

Blacher

Crine

et al. 2008

Journal of Non-Crystalline Solids

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Porous carbon xerogels can be obtained by convective drying of resorcinol (R)-formaldehyde (F) hydrogels, followed by pyrolysis. Drying conditions have to be carefully controlled when crack-free monoliths with well-defined shape and size are required. The knowledge of the mechanical properties of the RF xerogels and their evolution with water content is essential to model their thermo-hygro-mechanical behaviour during convective drying and avoid mechanical stresses leading to deformation and cracking of the sample. The shrinkage behaviour and the mechanical properties of RF xerogels obtained with R/C ratio ranging from 300 to 1500 were investigated. R/C greatly influences the shrinkage and mechanical properties of the wet gel, on the one hand, and the mechanical and textural properties of the dried gel, on the other hand. The smaller the R/C, the higher the shrinkage, the stiffening, and the viscoelastic character of the xerogels. Water content has an influence on both the stiffness of the gels and the viscoelastic response. Generally, samples lose their mechanical viscous character and become more rigid when they are dried. Finally, mercury porosimetry measurements showed that the gels exhibit a marked lowering of 2 their stiffness upon compression, interpreted as a result of the heterogeneity of the microstructure.

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“…Stress relaxation data are interpreted using the Maxwell model or a generalised Maxwell model, as commonly applied for various materials [34], [35], [36], [37], [38] and [39].…”

Section: Introductionmentioning

confidence: 99%

Evolution of mechanical properties and final textural properties of resorcinol–formaldehyde xerogels during ambient air drying

Léonard

Blacher

Crine

et al. 2008

Journal of Non-Crystalline Solids

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“…Impact and compression tests on whole cabbages were reported to measure the cracking damage of the heads (Holts and Schoorl, 1983). In our previous study, a tensile test of the fifth leaves of cabbages (Kohyama et al, 2008a;b) determined that mechanical properties varied widely depending on direction of veins as reported for other plants (Vincent, 1990;Toole et al, 2000).…”

Section: Introductionmentioning

confidence: 70%

“…Head density was calculated as the ratio of weight to volume. The fifth leaf from the outside was used for a tensile test (Kohyama et al, 2008a;b). The weight of the fifth leaf and the ratio to the whole head was calculated.…”

Section: Methodsmentioning

confidence: 99%

“…Mechanical tests Mechanical tests were performed using a Universal Testing Machine (Model 5564 or 5542, Instron, Canton, MA, USA) attached to a load cell of 1 kN or 50 N at 20℃ (Kohyama et al, 2008a;b).…”

Section: Methodsmentioning

confidence: 99%

“…A stress relaxation test of whole head of cabbages was conducted as a nondestructive method. Compression-relaxation tests were applied for other vegetables (Holts and School, 1983;Blahovec 1996a;Marquina et al, 2001), fruits (Peleg, 1979;Blahovec 1996b;Hassan et al, 2005) and processed foods (Shama and Sherman, 1973;Peleg, 1979;Singh et al, 2006). A puncture test of whole head and tensile test of specimens from a leaf were also conducted as destructive methods.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Head Density of Cabbages (Brassica oleracea var. Capitata) on Mechanical Properties

Kohyama

Saito

Takezawa

et al. 2009

FSTR

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The mechanical properties of cabbages (var. Yumebutai) with different head densities were evaluated by stress relaxation and a puncture test of whole cabbages, and also by a tensile test of strap-shaped specimens. The resistance of whole head to compression at small deformation was well correlated to head density. Mechanical properties in the fifth leaves of cabbages did not correlate to head density, although tensile properties varied within an individual leaf, with direction of tension, and among individual leaves. The observation suggests that head density influences mechanical resistance of whole head at small deformation, and may relate to properties for cutting with an industrial shredder; however it is not a significant factor for mechanical properties of shredded cabbage.

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Organ-Derived Extracellular Matrix (ECM) Hydrogels: Versatile Systems to Investigate the Impact of Biomechanics and Biochemistry on Cells in Disease Pathology

Harmsen,

Getova,

Zhang

et al. 2023

Handbook of the Extracellular Matrix

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Stress relaxation of dates at khalal and rutab stages of maturity

Cited by 48 publications

References 15 publications

Evolution of mechanical properties and final textural properties of resorcinol–formaldehyde xerogels during ambient air drying

Evolution of mechanical properties and final textural properties of resorcinol–formaldehyde xerogels during ambient air drying

Effects of Head Density of Cabbages (Brassica oleracea var. Capitata) on Mechanical Properties

Organ-Derived Extracellular Matrix (ECM) Hydrogels: Versatile Systems to Investigate the Impact of Biomechanics and Biochemistry on Cells in Disease Pathology

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