TY - GEN
T1 - Measurement of Young's modulus and Poisson's ratio of human hair using optical techniques
AU - Hu, Zhenxing
AU - Li, Gaosheng
AU - Xie, Huimin
AU - Hua, Tao
AU - Chen, Pengwan
AU - Huang, Fenglei
PY - 2010
Y1 - 2010
N2 - Human hair is a complex nanocomposite fiber whose physical appearance and mechanical strength are governed by a variety of factors like ethnicity, cleaning, grooming, chemical treatments and environment. Characterization of mechanical properties of hair is essential to develop better cosmetic products and advance biological and cosmetic science. Hence the behavior of hair under tension is of interest to beauty care science. Human hair fibers experience tensile forces as they are groomed and styled. Previous researches about tensile testing of human hair were seemingly focused on the longitudinal direction, such as elastic modulus, yield strength, breaking strength and strain at break after different treatment. In this research, experiment of evaluating the mechanical properties of human hair, such as Young's modulus and Poisson's ratio, was designed and conducted. The principle of the experimental instrument was presented. The system of testing instrument to evaluate the Young's modulus and Poisson's ratio was introduced. The range of Poisson's ratio of the hair from the identical person was evaluated. Experiments were conducted for testing the mechanical properties after acid, aqueous alkali and neutral solution treatment of human hair. Explanation of Young's modulus and Poisson's ratio was conducted base on these results of experiments. These results can be useful to hair treatment and cosmetic product.
AB - Human hair is a complex nanocomposite fiber whose physical appearance and mechanical strength are governed by a variety of factors like ethnicity, cleaning, grooming, chemical treatments and environment. Characterization of mechanical properties of hair is essential to develop better cosmetic products and advance biological and cosmetic science. Hence the behavior of hair under tension is of interest to beauty care science. Human hair fibers experience tensile forces as they are groomed and styled. Previous researches about tensile testing of human hair were seemingly focused on the longitudinal direction, such as elastic modulus, yield strength, breaking strength and strain at break after different treatment. In this research, experiment of evaluating the mechanical properties of human hair, such as Young's modulus and Poisson's ratio, was designed and conducted. The principle of the experimental instrument was presented. The system of testing instrument to evaluate the Young's modulus and Poisson's ratio was introduced. The range of Poisson's ratio of the hair from the identical person was evaluated. Experiments were conducted for testing the mechanical properties after acid, aqueous alkali and neutral solution treatment of human hair. Explanation of Young's modulus and Poisson's ratio was conducted base on these results of experiments. These results can be useful to hair treatment and cosmetic product.
KW - Human hair
KW - Mechanical properties
KW - Poisson's ratio
UR - http://www.scopus.com/inward/record.url?scp=79958169184&partnerID=8YFLogxK
U2 - 10.1117/12.851415
DO - 10.1117/12.851415
M3 - Conference contribution
AN - SCOPUS:79958169184
SN - 9780819479129
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Fourth International Conference on Experimental Mechanics
T2 - 4th International Conference on Experimental Mechanics
Y2 - 18 November 2009 through 20 November 2009
ER -