Mechanical approach to aging and wrinkling of human facial skin based on the multistage buckling theory

Material type: 文書・図像類

Author: KUWAZURU, Osamuほか

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Publication date: 2008

Material Format: Digital

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Note (General)：: A wrinkle formation mechanism with cutaneous aging is addressed through a mechanical calculation of linear buckling. Skin is divided into five mechani...

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Material Type: 文書・図像類
Title: Mechanical approach to aging and wrinkling of human facial skin based on the multistage buckling theory
Author/Editor: KUWAZURU, Osamu
SAOTHONG, Jariyaporn
YOSHIKAWA, Nobuhiro
Author Heading: KUWAZURU, Osamu
SAOTHONG, Jariyaporn
YOSHIKAWA, Nobuhiro
Publication Date: 2008
Publication Date (W3CDTF): 2008
Periodical title: Medical Engineering & Physics
No. or year of volume/issue: 30
Volume: 30
Pages: 516-522
ISSN (Periodical Title): ISSN : 1350-4533
Text Language Code: eng
Subject Heading: Skin
Aging
Wrinkle
Linear Buckling
Timoshenko Beam
Two-Parameter Foundation
Target Audience: 一般
Note (General): A wrinkle formation mechanism with cutaneous aging is addressed through a mechanical calculation of linear buckling. Skin is divided into five mechanically distinct layers in this study. In general, the outer layer is stiffer than the inner layer, so buckling occurs in the outer layer against the uniform compression caused by muscle contraction. This buckling damages the skin and affects the formation of permanent wrinkles. We propose a multistage buckling theory for evaluation of the wrinkle property, namely, the specific wrinkle size and critical strain in three stages. The specific wrinkle size is derived as the wavelength of the minimum-buckling mode for infinite-length skin. A sensitivity analysis is carried out to investigate the effect of age-related changes of the mechanical parameters on the wrinkle property. We employ some aging hypotheses and prepare two sets of mechanical parameters, one for young and one for aged skin. The numerical results show that the buckling mode switch from Stage I to Stage II is the main reason why pronounced wrinkles suddenly appear in aged skin.
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ