Paper Titles
Fabrication of Tubular Mullite-Alumina Porous Ceramics by Polymer-Aided Extrusion
p.333
Microstructural Evolution of Electromagnetically Stirred Al Alloy during Isothermal Reheating in Solid-Liquid Region
p.338
Effect of Ternary Alloying Elements on Microstructure and Mechanical Property of Nb-Si Based Refractory Intermetallic Alloy
p.342
Influences of Fiber Orientation on the Progressive Damage in Glass Reinforced Hybrid Composite
p.346
Characteristic of the Residual Strength Rate by Variation of Impact Velocities for the Leaf Spring in Ankle Foot Orthosis
p.350
The Effect of Defect Locations on the Stress Distribution and Crack Initiation in Monolithic Aluminum vs. GLARE Hybrid Composite
p.354
Vibration and Impact Noise Damping Properties of Wood/Polymer Composites
p.358
Processing and Microstructural Characteristics of Bi-Materials Composed of Al and Its Composite
p.362
Mechanical and Electrical Properties of Y-TZP Containing TiNi-Base Intermetallic Compounds
p.366

Characteristic of the Residual Strength Rate by Variation of Impact Velocities for the Leaf Spring in Ankle Foot Orthosis

Article Preview

Abstract:

Ankle Foot Orthosis (A.F.O) should endure the uncountable repeating impact and fatigue loadings owing to the gait characteristics. This study investigates the impact deflection and relationship between the absorbed energy and the residual strength rate using the glass/epoxy and the aramid/epoxy for the leaf spring in A.F.O. In conclusion, an equation was suggested to evaluate the absorbed energy and the residual strength rate by the different impact velocities. When the glass/epoxy and the aramid/epoxy was selected for the leaf spring in A.F.O, it was reasonable to use the glass/epoxy of the cross-ply for the parts subject to the large impact and the aramid/epoxy of the woven type for the parts to require the high elastic energy such as the large deformation.

You might also be interested in these eBooks
Eco-Materials Processing & Design VI View Preview

Info:

Periodical:

Materials Science Forum (Volumes 486-487)

Pages:

350-353

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.486-487.350

Citation:

Cite this paper

Online since:

June 2005

Authors:

Cheol Woong Kim, Dong Joon Oh

Keywords:

Ankle Foot Orthosis AFO, Aramid/Epoxy, Deflection, Delamination, Elastic Energy, Glass/Epoxy, Impact Energy, Impact Load, Indentation, Rebound Energy, Residual Strength Rate

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] Shamp, Neurophysiologic Orthotic Designs in the Treatment of Central Nervous System Disorders, Journal of Prosthetics and Orthotics, Vol. 2, No. 1 (2000), p.14~32.

DOI: 10.1097/00008526-198900210-00002

Google Scholar

[2] Husman, G. E., Whitney, J. M. and Halpin, J. C., Residual Strength Characterization of Laminated Composite Subjected to Impact Loading, ASTM STP 568 (1975), p.92~113.

DOI: 10.1520/stp33152s

Google Scholar

[3] Kim, J. K. and Kang, K. W., Impact Damage Behavior and Evaluation of Residual Strength in Plain Woven Glass/Epoxy Composite, Transaction of the KSME, A, Vol. 23, No. 2 (1999), p.294~303.

Google Scholar

[4] Waddoups, M. E., Eisenmann, J. R. and Laminski, B. E., Macroscopic Fracture Mechanics of Advanced Composite Materials, Journal of Composite Materials, Vol. 5 (1971), p.446~454.

DOI: 10.1177/002199837100500402

Google Scholar