2017
DOI: 10.1186/s13007-017-0250-y
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Measuring the compressive modulus of elasticity of pith-filled plant stems

Abstract: BackgroundThe compressional modulus of elasticity is an important mechanical property for understanding stalk lodging, but this property is rarely available for thin-walled plant stems such as maize and sorghum because excised tissue samples from these plants are highly susceptible to buckling. The purpose of this study was to develop a testing protocol that provides accurate and reliable measurements of the compressive modulus of elasticity of the rind of pith-filled plant stems. The general approach was to r… Show more

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Cited by 42 publications
(40 citation statements)
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“…A finite element model was developed to simulate the testing in Abaqus/CAE 2016. The geometry for the model was created using the inner and outer boundaries derived from the specimen-specific CT scans, as described in a previous study from our research group (Al-Zube et al 2017) . The model was designed as a two-dimensional plane-stress analysis, with transversely isotropic material properties.…”
Section: Finite Element Model Developmentmentioning
confidence: 99%
“…A finite element model was developed to simulate the testing in Abaqus/CAE 2016. The geometry for the model was created using the inner and outer boundaries derived from the specimen-specific CT scans, as described in a previous study from our research group (Al-Zube et al 2017) . The model was designed as a two-dimensional plane-stress analysis, with transversely isotropic material properties.…”
Section: Finite Element Model Developmentmentioning
confidence: 99%
“…Measurements of rind thickness typically require either expensive biomedical imaging procedures (e.g., X-ray computed tomography) or destructive sectioning procedures that result in plant fatality (i.e. using manual or powered cutting tools) [4,8,9]. As an alternative to these procedures, the authors developed a novel, minimally invasive rind puncture test methodology to measure rind thickness and diameter that does not induce plant fatality.…”
Section: Introductionmentioning
confidence: 99%
“…where L is the distance between the left and right supports, a and b are the distances from the left and right anvils to the point of applied load, ∅ is the slope of the force-deflection curve, and I is the moment of inertia of the rind determined from the CT scans as described in (5,10). This method ignores the contribution of the pith, which has been shown to be negligible (9,20). Derivation of Eq.…”
Section: See Formula 1 In the Supplemental Filesmentioning
confidence: 99%
“…This approach is highly confounded by numerous factors, some of which include, location, weather and disease (2,3,(5)(6)(7)(8). Other approaches to quantifying stalk lodging resistance have included measuring stalk crushing strength, dry weight, rind thickness and stalk bending strength, among others (5,(9)(10)(11). An alternative method for predicting lodging susceptibility and stalk strength is rind penetration resistance.…”
Section: Introductionmentioning
confidence: 99%