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Critical Distance
Theories of Fracture
Organized
by
This symposium
is concerned with a certain group of theories which are used for predicting the
effects of stress concentrations: the common feature of these theories is that
they use a critical distance parameter. Examples of such theories are the Point
Method and Line Method (also called the Point Stress and Average Stress
methods) in which the controlling parameter is the stress at a critical point,
or averaged over a critical distance. Some other related theories are those in
which a small crack is introduced at the notch and fracture is predicted based
on stress or energy considerations. Usually, though not always, the critical
distance is assumed to be a material constant. Both monotonic and cyclic
(fatigue) failures can be predicted. All classes of materials can be
considered: metals, polymers, ceramics and composites.
Invited
talks will explore both theoretical and practical aspects. Areas of theoretical interest include the link between these methods
and traditional fracture mechanics and their relationship to micromechanisms of failure. Practical aspects include the
assessment of components using of finite element analysis and complex problems
such as surface contact and multiaxial loading.
Symposium
Organizer: David Taylor
Address: Department of Mechanical
Engineering,
Phone: +353 1 6081703, FAX :
+353 a 6795554, E-mail: dtaylor@tcd.ie
Symposium
Chair: David Taylor
Symposium
Co-chair: Luca Susmel
Address: Department of Engineering,
Phone: +39 0532 974958, FAX: +39 0532 974870, E-mail: lsusmel@ing.unife.it
Papers
1.
The Theory of Critical Distances: an overview
(keynote)
by David
Taylor
2.
Scale effects at crack initiation at v-notches or
cavities in brittle materials
Corresponding Author: Dominique Leguillon
LMM - CNRS UMR7607
Université
Pierre et Marie Curie (Paris 6)
Case courrier
162, 4 place Jussieu, 75252 PARIS Cedex 05 - France
Phone: (33) 01 44 27 53 22, FAX: 33) 01 44 27 52 59, E-mail: dol@ccr.jussieu.fr
Co-authors: Jia
Li, David Picard, Claude Putot
3. Application of the Point
Stress method to hydraulic fracturing tectonic stress measurements
Corresponding
Author: Takatoshi ITO
Phone: +81-22-217-5234,
FAX: +81-22-217-5234, E-mail:
ito@ifs.tohoku.ac.jp
4.
Using a "local approach" for predicting the
effects of prior loading history on cleavage fracture
Corresponding Author: David Smith
Faculty of Engineering, Queen's Building,
Phone: +44 (0) 117 928 8212, E-mail: david.smith@bristol.ac.uk
5.
Use of the TCD (applied in terms of Jv) to predict static failures in
notched components of brittle material subjected to Mode I and II
Corresponding Author: Paolo Livieri
Department of
Engineering,
via Saragat, 1,
44100
FAX: 39-0532-974870, E-mail: plivieri@ing.unife.it
6.
Finite Fracture Mechanics: theory and applications
Corresponding Author: Pietro Cornetti
Corresponding author address: Politecnico di Torino, Italy
E-mail:
pietro.cornetti@polito.it
Co-authors: Nicola Pugno
(
7.
Quantized Fracture Mechanics: predicting failure at
the atomic level
Corresponding Author: Nicola Pugno
Politecnico di Torino, Italy
E-mail:
nicola.pugno@polito.it
8. Application of the point stress criterion to failure
of pinned joints
Corresponding Author: H.A.Whitworth
Department of
Mechanical Engineering
Phone: +1 (202)
806-6600, FAX: +1 (202) 483-1396
E-mail: hwhitworth@howard.edu
9.
The Theory of Critical Distances: Applications in
Fatigue (keynote)
Corresponding Author: Luca Susmel
Department of
Engineering,
Phone: +39 0532 974958, FAX: 39-0532-974870, E-mail: lsusmel@ing.unife.it
10.
Fatigue resistance assessment by using an integrated
threshold curve method: modeling and applications
Corresponding Author: Micro Chapetti
Faculty of
Engineering,
Phone: +54-(0)223-481-6600 Ext.24, FAX: +54-(0)223-481-0046
E-mail: mchapetti@fi.mdp.edu.ar
11.
Local energy over the critical volumes at weld toes
and roots and fatigue strength of steel and aluminium
welded joints
Corresponding Author: Paolo Lazzarin
Phone: +39 0444 998780, FAX: +39
0444 998888
E-mail: plazzarin@gest.unipd.it
Co-authors: Paolo Livieri,
Filippo Berto
12.
Role of the process zone in fatigue crack initiation
and propagation
Corresponding Author: O.P.Ostash
Karpenko Physico-Mechanical
Institute, National Academy of Sciences of Ukraine, 5, Naukova
Str., 79601, Lviv, Ukraine.
E-mail: ostash@ah.ipm.lviv.ua
Co-authors: Paolo Livieri,
Filippo Berto
13. Assessment of fretting
fatigue failure using the critical distance methods and other notch
methodologies
Corresponding Author: Carpoforo Vallellano
Department of
Mechanical and Materials Engineering, Escuela
Superior de Ingenieros Industriales
C/ Camino de los Descubrimientos s/n, 41092 – Sevilla, Spain
Phone:+34 954 487 311, FAX: +34 954 487 295, E-mail: carpofor@us.es
14. Estimation of the fretting
fatigue limit considering the use of a critical distance method (Point Method)
and multiaxial fatigue models
Corresponding
Author: Alex Araujo
Universidade de Brasília - UnB
Faculdade de Tecnologia – FT, Departamento de Engenharia Mecânica
- ENM
Brasília - DF Cep:70910-900, Brasil
Phone:++55 (0)61 307 3089, FAX:++55 (0)61 307 29 78,
E-mail: alex07@unb.br
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