METHOD OF TESTING MATERIAL HARDNESS AND DEVICE FOR IMPLEMENTATION Russian patent published in 1995 - IPC

Abstract RU 2042943 C1

FIELD: quality inspection of materials. SUBSTANCE: magnetostrictive drill coupled to indenter is excited by pulse and integral area limited by decaying signal of oscillatory velocity is determined. Device for implementation of method is manufactured in the form of unit for processing of signals of converter of magnetostrictive drill which circuit includes integrator, frequency meter, comparator and controlled keys. EFFECT: enhanced efficiency and authenticity of material testing. 2 cl, 2 dwg

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RU 2 042 943 C1

Authors

Bryzgalo V.N.

Kartashevich R.S.

Tugengol'D A.K.

Dates

1995-08-27—Published

1992-02-07—Filed