Elasticity measuring method and elasticity measuring apparatus

Details Elasticity measuring method and elasticity measuring apparatus Elasticity measuring method and elasticity measuring apparatus

1994-04-28

1996-03-05

Chilcot, Richard

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73573, G01D 702

Patent

active

054957710

ABSTRACT:
There are provided an elasticity measuring method of measuring an elastic constant of elasticity of an elastic body, for example, an elastic rubber, an organism or a living body, etc., which is soft and rather incompressible, by means of measuring an internal strain using energy such as ultrasounds, an X-ray, and magnetism, where the elastic constant includes, for example, typically shear modulus, Young's modulus, etc.; and an elasticity measuring apparatus adapted to practice such an elasticity measuring method. According to such method and apparatus, the elastic constant distribution within the subject is detected only through measuring the strain distribution within the subject, without measuring the stress distribution. The elasticity measuring method is of detecting the ratio of elastic value-to-elastic value, which are representative of levels of elasticity involved in a reference point on a predetermined straight line extending inside of a subject and a predetermined observation point on the straight line, respectively, by means of detecting the ratio of strain-to-strain, which are involved in said referencepoint and said observation point, respectively, with respect to a direction toward which the straight line extends.

REFERENCES:
patent: 4099408 (1978-08-01), Ludwigson
patent: 4304135 (1981-12-01), Peterson et al.
patent: 4694698 (1987-09-01), Miyajima
patent: 4781056 (1988-11-01), Noel et al.
patent: 5335661 (1994-09-01), Koblanski

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