UPM Institutional Repository

Mechanical characterization and micromechanical modeling of bread dough.


Citation

P. Mohammed, Mohd Afandi and Charalambides, Maria N. and Tarleton, Edmund and James Gordon, Williams (2013) Mechanical characterization and micromechanical modeling of bread dough. Journal of Rheology, 57 (1). pp. 249-272. ISSN 0148-6055

Abstract

The mechanical behavior of dough, gluten, and starch was studied in an effort to investigate whether bread dough can be treated as a two phase (starch and gluten) composite material. Mechanical loading tests revealed rate-dependent behavior for both the starch and the gluten constituents of dough. There is evidence from cryo-scanning electron microscopy that damage in the form of debonding between starch and gluten occurs when the sample is stretched. In addition, the Lodge material model was found to deviate from the tension and shear stress-strain test data by a considerably larger amount than from the compression test data. This could indicate that “damage” is dominant along the gluten-starch interface, causing debonding; the latter occurs less under compression loading, but is more prevalent in tension and shear loading. A single-particle finite element model was developed using starch as a filler contained in a gluten matrix. The interface between starch and gluten was modeled using cohesive zone elements with damage/debonding occurring under opening/tension and sliding/shear modes. The numerical results are compared to experimental stress-strain data obtained at various loading conditions. A comparison of stress-strain curves obtained from 2D and 3D single-particle models and a 2D multiparticle model led to good agreement, indicating that the single-particle model can be used to adequately represent the microstructure of the dough studied here.


Download File

[img]
Preview
PDF (Abstract)
Mechanical characterization and micromechanical modeling of bread dough.pdf

Download (178kB) | Preview

Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1122/1.4768463
Keywords: composite materials, compressive strength, compressive testing, finite element analysis, micromechanics, scanning electron microscopy, shear strength, stress-strain relations, Bread dough
Depositing User: Muizzudin Kaspol
Date Deposited: 26 May 2014 06:30
Last Modified: 28 Oct 2015 04:29
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1122/1.4768463
URI: http://psasir.upm.edu.my/id/eprint/28625
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item