Measurement of transverse Young´s modulus of carbon fibres by angular characteristics of ultrasonic scattering

Author

Ueda, Mitsuhiro ; Takiguchi, Taizo

Author_Institution

Tokyo Inst. of Technol., Japan

fYear

1990

fDate

4-7 Dec 1990

Firstpage

1081

Abstract

The angular scattering characteristics of ultrasonic waves depend on the density and sound velocity of scatterers. The sound velocity of thin fibres is estimated from their angular scattering characteristics, and transverse Young´s moduli of fibres are calculated by assuming reasonable values for the density and Poisson ratio of the fibres. Measurements were carried out for fibres made of aluminum, nylon, and carbon. These values are compared with the corresponding values of longitudinal Young´s moduli reported previously. Almost the same Young´s moduli are obtained for aluminum and nylon fibres, but much smaller transverse Young´s moduli compared with longitudinal ones are obtained for the carbon fibres

Keywords

Poisson ratio; Young´s modulus; carbon fibres; ultrasonic materials testing; Al fibres; C fibres; Poisson ratio; angular scattering characteristics; density; nylon fibres; sound velocity; thin fibres; transverse Young´s modulus; ultrasonic scattering; ultrasonic waves; Acoustic scattering; Aluminum; Transmitters; Ultrasonic transducers; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171528

Filename

171528