Influence of notch geometry on fracture behaviour of three-point bend notched specimens from quasi-brittle materials
Result description
To assess the reliability of structures their fracture mechanical properties have to be known. In the case of cement-based composite types the basic parameters 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 specimens for laboratory testing. The influence of the geometry of the starting notch in a three-point bend specimen on the resulting values of fracture toughness is studied in this paper. To this end, a crack initation 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.
Keywords
fracture toughnesscement-based compositesfinite element methodfracture mechanics
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Influence of notch geometry on fracture behaviour of three-point bend notched specimens from quasi-brittle materials
Original language description
To assess the reliability of structures their fracture mechanical properties have to be known. In the case of cement-based composite types the basic parameters 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 specimens for laboratory testing. The influence of the geometry of the starting notch in a three-point bend specimen on the resulting values of fracture toughness is studied in this paper. To this end, a crack initation 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
Vliv geometrie zářezu na lomové chování nosníků se zářezem s kvazikřehkého materiálu při zkoušce tříbodovým ohybem
Czech description
Vliv geometrie zářezu na lomové chování nosníků se zářezem s kvazikřehkého materiálu při zkoušce tříbodovým ohybem
Classification
Type
D - Article in proceedings
CEP classification
JM - Structural engineering
OECD FORD branch
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Result continuities
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)
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
Recent Developments in structural engineering, mechanics and computation
ISBN
978-90-5966-054-0
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
655-658
Publisher name
Neuveden
Place of publication
Cape Town, south Africa
Event location
Cap Town
Event date
Sep 10, 2007
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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Result type
D - Article in proceedings
CEP
JM - Structural engineering
Year of implementation
2007