The size effect on J-R curve for construction steels and its prediction by simplified mechanical model

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00495908" target="_blank" >RIV/68081723:_____/19:00495908 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The size effect on J-R curve for construction steels and its prediction by simplified mechanical model

Original language description

Evaluation of mechanical properties from a small amount of test material is essential in a process of development of new alloys and monitoring of degradation and damage of in-service components. Miniaturization of test specimen together with a specimen reconstitution technique enable direct method of evaluation of mechanical properties if only a limited amount of material is available. Modern types of construction steels and alloys possess improved metallurgical and mechanical properties and also demonstrate a high level of fracture toughness. In these cases, correlation and correction of size effect on fracture toughness between different specimen sizes are needed. Within this contribution the size effect of J-R curve for two sizes of three-point-bend specimens is solved. The J-R curves of three-point-bend specimens with cross-section 10×10 mm and 3×4 mm of P91 and Eurofer97 steel were determined at room temperature. The existence of size effect is proven as larger specimens demonstrate higher J-R curves than smaller specimens for both steels. Simplified mechanical model based on fracture energies initially proposed by Schindler et al. is applied to describe experimentally determined J-R curves and to predict the observed size effect between used specimen sizes.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2018,

ISBN

978-0-7918-5168-5

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

UNSP V06BT06A066

Publisher name

ASME

Place of publication

New York

Event location

Prague

Event date

Jul 15, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000460999000066