Work package 8: ColMat
Collimators & materials for higher
beam power beam
Department of Mechanics
Politecnico di Torino
Kick-off meeting - 17 June 2009
European Coordination for Accelerator Research and Development
Department of Mechanics
Politecnico di Torino
About us
Politecnico di Torino is one of the main universities in Italy and in Europe in the field
of technical-scientific training, in Engineering and Architectural research.
The Politecnico has 28.000 students studying on 116 courses (34 Bachelor's degree
courses; 35 Master of Science courses; 20 Doctorates and 27 specialization
courses).
The Department of
Mechanics (DIMEC)
promotes, coordinates and
manages the teaching,
research and consulting
activities in the fields of
functional and structural
design, testing of mechanical
devices and systems, their
application, evolution and
integration into complex
systems
http://www.dimec.polito.it/en
2
Department of Mechanics
Politecnico di Torino
Tests & numerical simulation
One important field of interest for our research is the
thermo and dynamic (under shock and impact)
characterization of materials and structures and the
numerical modeling in such conditions.
We have many devices for the experimental
characterization of materials under shock and
impacts and some competences in numerical code.
Explosions
Material modelling
Impact test
Hopkinson bar
Structures
and joints
modelling
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Materials
Department of Mechanics
Politecnico di Torino
Polymers
Metals and alloys
Cellular solids
Composite and metal matrix
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Cooperation with Cern
Department of Mechanics
Politecnico di Torino
Five years ago a cooperation with Mechanical and Materials Engineering Group of the
Engineering Department of Cern was born in the study of thermal shock problems in the
accelerator collimator
Striker bar
Output bar
Input bar
Specimen
Strain
transducer
Space
R=5
M10
Transmitted
waves
Reflected
waves
30
1.3
25
20
15
strain-rate 10 -3 1/s
strain-rate 10 -1 1/s
10
strain-rate 10 1 1/s
Marco Peroni, Lorenzo Peroni,
Alessandro Dallocchio
Dymat 2009
5
0
0
Glidcop
Lu
Strain-rate amplification factor
Thermo-mechanical
model identification
of a strengthened
copper with an
inverse method
Ø5
Force (kN)
Time
Incident
wave
strain-rate 10 3 1/s
numerical fit
0.5
1
1.5
2
Stroke (mm)
2.5
3
1.2
experimental tests
Cowper-Symonds fit
Johnson-Cook fit
1.1
1
0.9 -4
10
10
-2
0
10
strain-rate (s -1)
10
2
10
4
5
Department of Mechanics
Politecnico di Torino
Description of the work
From EUCARD Grant Agreement:
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Work package 8: ColMat
Collimators & materials for higher
beam power beam
Department of Mechanics
Politecnico di Torino
Thank you for your attention
European Coordination for Accelerator Research and Development