Damage characteristics of cross ply GFRP and woven AFRP under various impact velocities

Cheol Woong Kim; Sung Hyuk Lee; Sang Heon Lee; Kee Joo Kim

doi:10.4028/0-87849-427-8.409

Damage characteristics of cross ply GFRP and woven AFRP under various impact velocities

Cheol Woong Kim, Sung Hyuk Lee, Sang Heon Lee, Kee Joo Kim

Research output: Contribution to journal › Article › peer-review

Abstract

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

Original language	English
Pages (from-to)	409-412
Number of pages	4
Journal	Key Engineering Materials
Volume	334-335 I
DOIs	https://doi.org/10.4028/0-87849-427-8.409
Publication status	Published - 2007

Keywords

Ankle foot orthosis (A.F.O)
Aramid/epoxy
Deflection
Delamination
Elastic energy
Glass/epoxy
Impact energy
Impact load
Indentation
Rebound energy
Residual strength rate

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.4028/0-87849-427-8.409

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title = "Damage characteristics of cross ply GFRP and woven AFRP under various impact velocities",

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

keywords = "Ankle foot orthosis (A.F.O), Aramid/epoxy, Deflection, Delamination, Elastic energy, Glass/epoxy, Impact energy, Impact load, Indentation, Rebound energy, Residual strength rate",

author = "Kim, {Cheol Woong} and Lee, {Sung Hyuk} and Lee, {Sang Heon} and Kim, {Kee Joo}",

year = "2007",

doi = "10.4028/0-87849-427-8.409",

language = "English",

volume = "334-335 I",

pages = "409--412",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications Ltd",

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TY - JOUR

T1 - Damage characteristics of cross ply GFRP and woven AFRP under various impact velocities

AU - Kim, Cheol Woong

AU - Lee, Sung Hyuk

AU - Lee, Sang Heon

AU - Kim, Kee Joo

PY - 2007

Y1 - 2007

N2 - Ankle Foot Orthosis (A.F.O) should endure the uncountable repeating impact and fatigue loadings due to the gait characteristics. This study investigated the impact deflection and relationship between the absorbed energy and the residual strength rate using the cross ply GFRP (glass/epoxy) and the woven AFRP (aramid/epoxy) for the leaf spring in A.F.O. In conclusion, the equation was suggested to evaluate the absorbed energy and the residual strength rate by the different impact velocities. When the cross ply GFRP and the woven AFRP was selected for the leaf spring in A.F.O, it was reasonable to use the cross ply GFRP for the parts subject to the large impact and the woven AFRP for the parts to require the high elastic energy such as the large deformation.

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

KW - Ankle foot orthosis (A.F.O)

KW - Aramid/epoxy

KW - Deflection

KW - Delamination

KW - Elastic energy

KW - Glass/epoxy

KW - Impact energy

KW - Impact load

KW - Indentation

KW - Rebound energy

KW - Residual strength rate

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VL - 334-335 I

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EP - 412

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Damage characteristics of cross ply GFRP and woven AFRP under various impact velocities

Abstract

Keywords

ASJC Scopus subject areas

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