Spatial variation in mandibular bone elastic modulus and its effect on structural bending stiffness: A test case using the Taï Forest monkeys

Changes in thickness, elastic modulus, and bending stiffness were studied for handsheets prepared using different fiber compositions and dried under restraint or unrestraint conditions, when exposed to various humidity conditions. Four sets of experimental studies were carried out to investigate the effect of (1) different amounts of fines (or long fibers), (2) two-ply sheet forming, (3) high temperature restraint press drying, and (4) the use of recycled fibers on the thickness, elastic modulus, and bending stiffness. The results showed that thickness, elastic modulus, and bending stiffness changed depending upon the fiber composition, single or multi-ply forming, drying conditions, and recycling of fibers. Thickness change, restraint drying, and fiber hornification during recycling were the principal factors affecting the bending stiffness in cyclic humidity conditions.

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Influence of spatial variation of elastic modulus of ballast material on vibration response of a ballasted railway track

Journal of Japan Society of Civil Engineers Ser A2 (Applied Mechanics (AM)) ◽

10.2208/jscejam.72.i_265 ◽

2016 ◽

Vol 72 (2) ◽

pp. I_265-I_276

Author(s):

Ayumi WATANABE ◽

Kazuhiro KORO

Keyword(s):

Elastic Modulus ◽

Spatial Variation ◽

Vibration Response ◽

Railway Track

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Effects of Protein and Amino Acids on Poultry Growth and Bone Elastic Modulus

Transactions of the ASAE ◽

10.13031/2013.27872 ◽

1995 ◽

Vol 38 (2) ◽

pp. 603-607

Author(s):

S. G. Capps ◽

R. W. Bottcher ◽

C. F. Abrams Jr. ◽

S. E. Scheideler

Keyword(s):

Amino Acids ◽

Elastic Modulus ◽

Bone Elastic Modulus

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In Vitro‐Induced High Sugar Environments Deteriorate Human Cortical Bone Elastic Modulus and Fracture Toughness

Journal of Orthopaedic Research® ◽

10.1002/jor.24543 ◽

2019 ◽

Vol 38 (5) ◽

pp. 972-983 ◽

Cited By ~ 1

Author(s):

Kelly Merlo ◽

Jacob Aaronson ◽

Rachana Vaidya ◽

Taraneh Rezaee ◽

Vijaya Chalivendra ◽

...

Keyword(s):

Fracture Toughness ◽

Elastic Modulus ◽

Cortical Bone ◽

High Sugar ◽

Human Cortical Bone ◽

Bone Elastic Modulus

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Elastic modulus variation in mandibular bone: A microindentation study ofMacaca fascicularis

American Journal of Physical Anthropology ◽

10.1002/ajpa.20714 ◽

2008 ◽

Vol 135 (1) ◽

pp. 100-109 ◽

Cited By ~ 33

Author(s):

Andrew J. Rapoff ◽

Renaud G. Rinaldi ◽

Jennifer L. Hotzman ◽

David J. Daegling

Keyword(s):

Elastic Modulus ◽

Mandibular Bone ◽

Microindentation Study

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On the Flexural Characteristics of Multi-walled Carbon Nanotubes

MRS Proceedings ◽

10.1557/proc-858-hh3.23 ◽

2004 ◽

Vol 858 ◽

Author(s):

Rong Bai ◽

Justin Molenaur ◽

R. Byron Pipes

Keyword(s):

Elastic Modulus ◽

Beam Theory ◽

Effective Elastic Modulus ◽

Fixed Number ◽

Outer Radius ◽

Bending Stiffness ◽

Flexural Response ◽

Number Of Layers ◽

Inner Radius ◽

Multi Walled Carbon Nanotubes

ABSTRACTWe use an analytical solution for bending of coaxial orthotropic cylinders to model the flexural deformation of multi-walled nanotubes with any number of layers. The simulation results show that the bending stiffness of the MWNT increases with the number of nanotube layers. For fixed number of layers, MWNT with larger inner radius has greater bending stiffness. The bending stiffness also increases with out layer radius. For certain outer radius, smaller inner radius results in a larger stiffness. The effective elastic modulus of the MWNT also increases with the number of layers and the outer radius. For the same value of the outer radius, the MWNT with smaller inner radius has a larger effective elastic modulus. As the number of layers increases, the effective modulus approaches the in-plane elastic modulus of graphene. In this work we find that the interface conditions, i.e., perfect bonding or no friction, do not affect the bending stiffness and effective elastic modulus of the MWNT. Furthermore, the cross-section of MWNT does not show any warping under bending, which suggest the classic beam theory is applicable in determining the flexural response of MWNT.

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The effect of local bending stiffness on the wrinkling of sandwich panels

Proceedings of the Institution of Mechanical Engineers Part M Journal of Engineering for the Maritime Environment ◽

10.1243/147509003321921355 ◽

2003 ◽

Vol 217 (2) ◽

pp. 111-119

Author(s):

L Fagerberg

Keyword(s):

Elastic Modulus ◽

Sandwich Panel ◽

Volume Fraction ◽

Fibre Volume Fraction ◽

Fibre Volume ◽

Bending Stiffness ◽

Face Sheet ◽

Stacking Sequence ◽

The Core ◽

The Face

The use of the face sheet elastic modulus versus the face sheet local bending stiffness while designing against wrinkling is discussed in this paper. It shows that there are several ways to improve the critical wrinkling load of a sandwich panel without replacing the core. It is often possible to increase the wrinkling load by as much as 25 per cent without virtually any increase in weight or cost of the sandwich. This is achieved by improving the local bending stiffness of the sandwich face sheet by either optimizing the stacking sequence, lowering the fibre volume fraction or adding some extra layers of a cheap fibre material to the sandwich face, creating a minisandwich within the face sheet. Experiments are performed that clearly show the potential for increasing the critical wrinkling load by means of altering the face sheet.

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