Fracture toughness derived from small circumferentially cracked bars

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Fracture toughness derived from small circumferentially cracked bars. / Scibetta, Marc; Chaouadi, Rachid.

In: ASTM Special Technical Publication, Vol. 1329, 01.10.1998, p. 363-382.

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Scibetta, Marc ; Chaouadi, Rachid. / Fracture toughness derived from small circumferentially cracked bars. In: ASTM Special Technical Publication. 1998 ; Vol. 1329. pp. 363-382.

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@article{602ef67d3f2146acb9bde4e56d5ad09a,
title = "Fracture toughness derived from small circumferentially cracked bars",
abstract = "Small circumferentially Cracked Round Bars (CRB) are used to derive the fracture toughness of reactor pressure vessel steels. This cylindrical geometry is of practical interest for the nuclear industry as it only requires a small amount of irradiated material and as it is easy to test on a tensile machine.This paper describes an experimental procedure to obtain fracture toughness measurements from CRB with a diameter of 10 mm. Emphasis is put on crack growth monitoring during rotating bending fatigue precracking, on the formulae used to analyse the load displacement trace of a fracture toughness test and on the correction to be applied to take the loss of constraint into account.Experiments show that the method has the potential to derive fracture toughness valuesfrom the lower shelf to the lower transition region. Finite element analysis shows that the constraint of this geometry is generally lower than for bend specimens but is higher at higher load levels, allowing comparison to toughness data valid according to prevailing standards",
keywords = "Small specimen test techniques, test techniques",
author = "Marc Scibetta and Rachid Chaouadi",
note = "Score=10",
year = "1998",
month = oct,
day = "1",
doi = "10.1520/STP38000S",
language = "English",
volume = "1329",
pages = "363--382",
journal = "ASTM Special Technical Publication",
issn = "1071-720X",
publisher = "ASTM International",

}

RIS - Download

TY - JOUR

T1 - Fracture toughness derived from small circumferentially cracked bars

AU - Scibetta, Marc

AU - Chaouadi, Rachid

N1 - Score=10

PY - 1998/10/1

Y1 - 1998/10/1

N2 - Small circumferentially Cracked Round Bars (CRB) are used to derive the fracture toughness of reactor pressure vessel steels. This cylindrical geometry is of practical interest for the nuclear industry as it only requires a small amount of irradiated material and as it is easy to test on a tensile machine.This paper describes an experimental procedure to obtain fracture toughness measurements from CRB with a diameter of 10 mm. Emphasis is put on crack growth monitoring during rotating bending fatigue precracking, on the formulae used to analyse the load displacement trace of a fracture toughness test and on the correction to be applied to take the loss of constraint into account.Experiments show that the method has the potential to derive fracture toughness valuesfrom the lower shelf to the lower transition region. Finite element analysis shows that the constraint of this geometry is generally lower than for bend specimens but is higher at higher load levels, allowing comparison to toughness data valid according to prevailing standards

AB - Small circumferentially Cracked Round Bars (CRB) are used to derive the fracture toughness of reactor pressure vessel steels. This cylindrical geometry is of practical interest for the nuclear industry as it only requires a small amount of irradiated material and as it is easy to test on a tensile machine.This paper describes an experimental procedure to obtain fracture toughness measurements from CRB with a diameter of 10 mm. Emphasis is put on crack growth monitoring during rotating bending fatigue precracking, on the formulae used to analyse the load displacement trace of a fracture toughness test and on the correction to be applied to take the loss of constraint into account.Experiments show that the method has the potential to derive fracture toughness valuesfrom the lower shelf to the lower transition region. Finite element analysis shows that the constraint of this geometry is generally lower than for bend specimens but is higher at higher load levels, allowing comparison to toughness data valid according to prevailing standards

KW - Small specimen test techniques

KW - test techniques

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/30487716

U2 - 10.1520/STP38000S

DO - 10.1520/STP38000S

M3 - Article

VL - 1329

SP - 363

EP - 382

JO - ASTM Special Technical Publication

JF - ASTM Special Technical Publication

SN - 1071-720X

ER -

ID: 4442876