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MATERIALS ENGINEERING LABORATORY
Most Recent Research Devices
FACULTY OF TECHNOLOGY/Department of Mechanical Engineering, Materials Engineering Laboratory/ Seppo Järvenpää
7.7.2017
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TOPICS
Micro Indentation Tester
2009
NEW Thermo Mechanical Simulator (GLEEBLE 3500)
2010
Glow Discharge Optical Emission Spectrometer (GDOES)
2011
Confocal Laser Scanning Microscope
2012
Modernisation of Servo Hydraulic Test Machine (MTS)
2012
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MICRO INDENTATION TESTER
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MICRO INDENTATION TESTER
Standard resolution of X/Y tables:
0.25 µm per axis
Repositioning accuracy of standard
tables: 1 µm per axis
Anti-vibration table
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MICRO INDENTATION TESTER
Vickers indenter
Berkovich indenter
Spherical indenter
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MICRO INDENTATION TESTER
Fig. Schematic of a typical depthinstrumented indentation curve.
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MICRO INDENTATION TESTER
Real typical depth-instrumented
indentation curve.
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MICRO INDENTATION TESTER
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MICRO INDENTATION TESTER
Continuous Multicycles Modes (CMC)
method.
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THERMO MECHANICAL SIMULATOR (GLEEBLE 3800)
Maximum heating rate
- ca. 10.000 °C/s up to melting temperature
Cooling rates
- up to ca. 100 °C/s
- or forced cooling by gas flow or quenching
Maximum loading capacity
- 200 kN of static force in compression
or 100 kN in tension
Max. speed of the moving anvil
- 2 m/s (strain rates between 0.001 ... 50 1/s)
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THERMO MECHANICAL SIMULATOR (GLEEBLE 3800)
Applications such as:
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simulation of continuous casting
simulation of hot rolling or forging processes
hot tension or compression (axisymmetric or plane strain) tests, stress-strain curves
hot ductility testing
softening kinetics by stress relaxation
simulation of annealing treatments
simulation of welding thermocycles
determination of TTT and CCT diagrams, including the effect of deformation
thermal fatigue and creep deformation
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THERMO MECHANICAL SIMULATOR (GLEEBLE 3800)
Hot/Warm Deformation: Plane strain compression test. In single- or multiple hit compression tests, strain and strain
rate are controlled separately yet synchronously using the optional Hydrawedge® (see arrow).
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GLOW DISCHARGE OPTICAL EMISSION SPECTROMETER
(GDOES)
Model GDA 750
PMT, CCD
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GLOW DISCHARGE OPTICAL EMISSION SPECTROMETER
(GDOES)
Atoms are sputtered from
the sample surface by a
plasma (ionised argon
atoms).
Sputtered atoms emit
photons with
characteristic
wavelengths.
The intensities of different
wavelengths are
measured.
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GLOW DISCHARGE OPTICAL EMISSION SPECTROMETER
(GDOES)
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GLOW DISCHARGE OPTICAL EMISSION SPECTROMETER
(GDOES)
BULK ANALYSIS
- fast, few minutes/analysis
- minimal sample preparation
- pre-burn clears the surface being measured
- detection limit 1…10 ppm
-some knowledge of the measured sample is needed
DEPTH PROFILING
- analysing of surface layers up to 200 μm (coatings, films etc.)
- depth resolution of 1-5 nm
- intesities vs. time
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GLOW DISCHARGE OPTICAL EMISSION SPECTROMETER
(GDOES)
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GLOW DISCHARGE OPTICAL EMISSION SPECTROMETER
(GDOES)
Analysis trace on steel plate (anode diameter 2.5 mm)
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CONFOCAL LASER SCANNING MICROSCOPE
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CONFOCAL LASER SCANNING MICROSCOPE
TIEDEKUNTA TIEDEKUNTA / osasto osasto osaston osasto / Etuniminen
Sukuniminen-Sukuniminen
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CONFOCAL LASER SCANNING MICROSCOPE
- (confocal) Laser Scanning Microscope, (c)LSM
- Confocal Scanning Microscope, CSM (white light)
- Dual Core 3D Profiler (white/blue LED, confocal & interferometry)
- Color 3D Laser Scanning Microscope (Laser + white light)
- 3D Measuring Laser Microscope (Laser + white LED)
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CONFOCAL LASER SCANNING MICROSCOPE
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CONFOCAL LASER SCANNING MICROSCOPE
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CONFOCAL LASER SCANNING MICROSCOPE
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CONFOCAL LASER SCANNING MICROSCOPE
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MODERNISATION OF SERVO HYDRAULIC TEST MACHINE
(MTS)
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MODERNISATION OF SERVO HYDRAULIC TEST MACHINE
(MTS)
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Facilities:
-istalled 1991, modernisation 2012
-static and dynamic force capacity ± 250kN, maximum frequency 20Hz
-load cells ±15 kN and ± 250 kN
-piston stroke 150 mm
-extensometers ±1 mm (dynamic) and ±4 mm (static)
• Applications such as:
• -tensile tests, fatigue tests, fracture toughness tests (CTOD)
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Coming procurements 2014:
-thermal camera
-optical extensometer
-new (better) grips for flat and round specimens
(-bending facilities (possibly))
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MODERNISATION OF SERVO HYDRAULIC TEST MACHINE
(MTS)
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MODERNISATION OF SERVO HYDRAULIC TEST MACHINE
(MTS)
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MODERNISATION OF SERVO HYDRAULIC TEST MACHINE
(MTS)
Risks of the Fatigue?
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