Tensile strength tester for hair

Details Tensile strength tester for hair Tensile strength tester for hair

1985-05-20

1986-12-16

Ciarlante, Anthony V.

Measuring and testing

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

By loading of specimen

73831, G01N 308

Patent

active

046287426

ABSTRACT:
Apparatus for measuring tensile strength of hair samples in which the test is controlled automatically to provide the average value of a plurality of hair samples. The apparatus is digitally controlled to provide a rapid testing cycle time. Tension is applied by a pivoted arm, and rotated by a solenoid that is controlled digitally to provide substantially constant velocity to the arm. A strain gage secured to the arm measures the force extended by the arm in tensioning the hair sample.

REFERENCES:
patent: 3881346 (1975-05-01), Scheucher
patent: 4286469 (1981-09-01), Trias

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