KAPPA DS Zwick/Roell
Application
The Electromechanical Creep Testing Machine KAPPA DS offers a wide range of applications.
• Creep tests
• Creep rupture tests
• Stress rupture tests
• Relaxation tests
• Creep crack tests
• Definition of individual stepless sequences of load and temperature
• ‘Advanced creep‘ – Tests
– Creep fatigue tests
– Creep strain modelling (e.g. to give creep strength at various levels of strain)
– Creep ductility
– Creep property deterioration due to serviceexposure
– Creep data from component tests
• Additional load-, stress- and strain-controlled tests such as tensile, compression, flexure,
- Description
- Technical Data
- accessories
Product Description
Load Frame and drive system
• Stand-alone floor machine
• High stiffness, precision and flexibility by 4-columns-design and double screw design
• Precise axial alignment according to ASTM E 292 by precision crosshead guiding and special seating load train
• Requires no special base or foundation
• Includes vibration isolation with Sylomer-dampers under the load frame
• High resolution crosshead resolver and high resolution load channel permit excellent control characteristics
• Precise speed of +/-0.1% of set speed in range of 1μm/h to 100 mm/min (no load or constant load) measurement (average over 5 sec or 10 mm)
• High durability by use of brushless AC-motors
• Drive control sampling and adjustment frequency 6 ms
• Optional integration of high temperature controller in Kappa DS base
| Technical data: | Kappa 50 DS/Kappa 100 DS | Kappa 150 DS/Kappa 250 DS |
| load capacity | 50 kN / 100 kN | 150 kN / 250 kN |
| test area-depth | unlimited | unlimited |
| test area-width between drive screws | 610 mm | 610 mm |
| test area-height1 | max. 1290 mm | max. 1250 mm |
| crosshead strokes | 1290 mm | 1250 mm |
| Lateral support of moving crosshead | precision sliding bearing on four hard chromium plated columns (40 mm diameter), (50 mm diameter 250 kN) | |
| Test speed range | 0.001 mm/h to 100 mm/min | 0.001 mm/h to 100 mm/min |
| Return speed | 100 mm/min +C | 16:C33100 mm/min |
| Crosshead speed accuracy | +/- 0.1 % of setting | +/- 0.1 % of setting |
| (no load or constant | (no load or constant | |
| load averaged over 10 | load averaged over 10 | |
| mm or 5 s) | mm or 5 s) | |
| Resolution of strokeencoder | 0,003 μm | 0,003 μm |
| Frame Dimensions (WxDxH) | 860 x 655 x 2300 mm | 970 x 685 x 2400 mm |
| Weight | 840 kg | 1120 kg |
| Power requirements | 230 VAC, 1 kVA | 230 VAC, 1 kVA |
Load cells
• Rotational symmetrical Design
• Precise axial alignment
• Electronic „Plug and Play“-Type (Calibration and technical data are saved in sensor plug)
• High accuracy (Linearity, Repeatability, Hysteresis,Resolution) acc. to ASTM E 4 and ISO 7500-1
• High measurement range in class 1 acc. to ISO 7500-1 from 0.2 % ....100% of nominal load
• Extreme low temperature sensitivity
Pull rods
• Pull rods made of nickel-based superalloy
• Durability > 3 years at full load
• Upper pull rod with spherical bearing, lower pull rod with clamping lever
• Axial alignment acc. to ASTM E 292 and NADCAP-requirements
• No additional alignment cardan joints necessary
HT-furnace
• 3-zone furnace standard from 100/200°C to 1.200 °C
• Internal diameter: 100 mm
• Heated length: 300 mm
• Vertical positioning of furnace: furnace stays in the centre of the specimen during test
• Openings for load train, Thermocouples and Extensometers
• Optional side windows for optical strain measurement
• 3 Thermocouples for furnace controller, up to 3 additional Thermocouples for temperature control at the specimen
HT-controller
• Integrated, sophisticated Control-Algorithm for a precise Temperature along specimen and to prevent Temperature overshooting
• Empirically determined control parameters for different temperatures are no longer required
• Automatic Controller settings from 100/200°C to1.200°C
• Temperature-tolerances acc. ASTM E 139
• Interface for 6 Thermocouples (3 for furnace, 3 forspecimen special configurations possible)
• Digital display of temperatures
• Stand Alone or PC-operation possible
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Test load FN in tensile / compression direction 20
20
20
20
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kN
Test area width 440 440 440 640 640 640 mm Height of the lower test area, without accessories 1030
1430
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1755
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1415
1785
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Height without leg profiles a 1
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1528 … 1868 … 2238 … 1538 … 1878 … 2248 … mm
2108 2508 3078 2118 2518 3088 Width without leg profiles 680 680 680 880 880 880 mm Width with leg profiles 856 856 856 1056 1056 1056 mm (and electronics console) (1044) (1044) (1044) (1244) (1244) (1244) mm Depth without leg profiles (3 (4 552 552 552 552 552 552 mm Depth with leg profiles (3 690 690 690 690 690 690 mm Overall weight with electronics console, without leg profiles 165
187
209
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234
256
kg
Noise level at maximum speed 61
61
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61
61
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dB(A)
Drive system
Crosshead speed up to 110% 0.0005 0.0005 0.0005 0.0005 0.0005 0.0005 mm/min
of test load (v … v ) min Nom
… 1000 … 1000 … 1000 … 1000 … 1000 … 1000 Increased crosshead return speed (at reduced force) 1500
1500
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1500
1500
1500
mm/min
Drive system´s travel resolution 0.32495 0.32495 0.32495 0.32495 0.32495 0.32495 nm Power ratings
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Application
• Creep tests
• Creep rupture tests
• Stress rupture tests
• Relaxation tests (only with spring loaded system)
• Creep crack tests
• Definition of individual stepless sequences of temperature
• Ambient or elevated temperature
• For long term tests (reaching more than 10.000h
