Patenton — panteon of patents

(19)

RU

(11)

2 009 487

(13)

C1

(51)

IPC

(21) (22)

Application

4930289/12, 1991-04-23

(22)

Actual filing date

1991-04-23

(45)

Published

1994-03-15

(72)

Inventor

Portnoj O.A.Kljuchnikova N.V.Zosin V.P.Perepelkin K.E.

(73)

Holder

Sankt-Peterburgskij Institut Tekstil'Noj I Legkoj Promyshlennosti Im.S.M.Kirova

METHOD FOR DETERMINING BRITTLENESS OF LENGTHY MATERIALS Russian patent published in 1994 - IPC

Abstract RU 2009487 C1

FIELD: measurement technology. SUBSTANCE: method involves steps of securing the ends of a specimen, measuring the specific volume resistance ρ1 of the specimen, releasing one of the specimen ends, deforming this end by torsion, securing both ends of the specimen, compressing transversely the specimen, measuring the specific volume resistance (ρ2) of the specimen, calculating the brittleness index (Bk) from the formula Bk=(ρ2-ρ1)/ρ1. EFFECT: more accurate test results. 2 tbl

Similar patents RU2009487C1

Title Year Author Number
METHOD OF MEASUREMENT OF TEMPERATURE OF OBJECT 1991
  • Tarakanov B.M.
 RU2036443C1
METHOD OF DETERMINING ELECTRIC-PHYSICAL PARAMETERS OF DIELECTRICS BY DISCHARGE 1991
  • Gusev G.V.
 RU2007737C1
MEANS FOR PROTECTING FROM LOW TEMPERATURE 1991
  • Knjazeva K.V.
  • Kozlova E.V.
 RU2009650C1
METHOD FOR PRODUCTION OF NONWOVEN BONDED MATERIAL 1991
  • Dmitriev V.V.
  • Sashina E.S.
  • Stotskij A.A.
 RU2057217C1
METHOD OF EVALUATION OF STRAIGHTENING OF FIBRES 1992
  • Shtut I.I.
  • Chan B.Kh.
 RU2027992C1
DEVICE FOR THREAD REELING UP 1992
  • Tolkachev Eh.A.
  • Addasi Imad Said[Jo]
 RU2009974C1
METHOD FOR LASER WELDING OF THERMOPLASTIC MATERIALS 1992
  • Khlebnikova E.L.
  • Sukhova T.N.
  • Chizhik M.A.
 RU2011530C1
PROTECTIVE TROUSERS 1991
  • Dubska Zh.V.
  • Bogomolov K.L.
  • Romanov V.E.
 RU2005392C1
DEVICE FOR CLOTH WEAVING 1993
  • Mikhajlov B.S.
  • Aushejks L.V.
 RU2057827C1
METHOD OF FIBROUS PRESS-MATERIAL PRODUCING 1991
  • Nemilova T.V.
  • Tsarev G.I.
  • Zosina T.V.
  • Efimov V.P.
  • Vojtova N.V.
 RU2012567C1

RU 2 009 487 C1

Authors

Portnoj O.A.

Kljuchnikova N.V.

Zosin V.P.

Perepelkin K.E.

Dates

1994-03-15—Published

1991-04-23—Filed

read Similar patents