Evaluation of notch geometry effect on behaviour of fracture toughness testing specimen
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F07%3APU69248" target="_blank" >RIV/00216305:26110/07:PU69248 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
čeština
Original language name
Evaluation of notch geometry effect on behaviour of fracture toughness testing specimen
Original language description
The basic fracture properties of cement-based composite are ascertained on the basic of test evaluations of the specimens in suitable test configurations. Three-point bending specimens with a central starting notch are the most frequently used specimensfor laboratory testing. Through models of elastic cracks the critical crack length and effective fracture toughness (or toughness) can be calculated. The influence of the geometry of the starting notch in a three-point bend specimen on the resulting values of critical applied force and fracture toughness is studied in this paper. To this end, a crack initiation at the notch tip is numerically simulated. It is shown that the values of fracture toughness obtained for specimens with larger widths of starting notch can be overestimated.
Czech name
Evaluation of notch geometry effect on behaviour of fracture toughness testing specimen
Czech description
The basic fracture properties of cement-based composite are ascertained on the basic of test evaluations of the specimens in suitable test configurations. Three-point bending specimens with a central starting notch are the most frequently used specimensfor laboratory testing. Through models of elastic cracks the critical crack length and effective fracture toughness (or toughness) can be calculated. The influence of the geometry of the starting notch in a three-point bend specimen on the resulting values of critical applied force and fracture toughness is studied in this paper. To this end, a crack initiation at the notch tip is numerically simulated. It is shown that the values of fracture toughness obtained for specimens with larger widths of starting notch can be overestimated.
Classification
Type
D - Article in proceedings
CEP classification
JM - Structural engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA103%2F07%2F1276" target="_blank" >GA103/07/1276: Complex modelling of fracture of advanced building materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Engineering mechanics 2007
ISBN
978-80-87012-06-2
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
243-244
Publisher name
Neuveden
Place of publication
Svratka, Česká republika
Event location
Svratka
Event date
May 14, 2007
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
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