Kappa DS

Electromechanical creep testing machine for creep tests up to 10,000 hours

The Kappa DS creep testing machine is equipped with a double lead screw and was designed for classic and advanced creep tests. With this electromechanical creep testing machine, high flexibility is combined with maximum precision in a single testing machine.
Kappa 50 DS

Key Advantages and Features of the Kappa DS

Application

The electromechanical creep testing machine Kappa DS offers a wide range of applications:

  • Creep test
  • Creep test up to break:
    - Creep rupture
    - Stress rupture
  • Relaxation test
  • Crack growth/widening test
  • Test with stepless force and temperature adjustment
  • Advanced creep tests:
    - Fatigue tests in the tensile range
    - Strain modeling (e.g. determination of creep curve at different loads)
    - Creep ductility
    - Creep property deterioration during operating life
    - Creep data from components tests
  • Room or high temperature
  • Long-term tests up to 10,000 h
  • Tensile, compression, flexure and breaking strength tests

Advantages & features

  • Load frame with double lead screw drive and precision guidance provided via four steel columns, giving precise axial loading and maximum durability
  • Large crosshead travel allows machine to accommodate a wide range of specimens and tests
  • Constant moving crosshead speed of +/-0.1% of specified speed in a measurement range from 1 µm/h to 100 mm/min
  • Selectable digital closed loop force and strain control creep tests and stress relaxation tests; user-programmed load cycles
  • Load string with optimum alignment properties in accordance with ASTM E292
  • High-resolution force and travel measurement for optimum control properties, especially at very low test speeds
  • Wide range of machine accessories for flexible application options, complemented by intelligent electronics and software

Technical Overview

Type Kappa

50 DS

100 DS

150 DS

250 DS

Test load, max. (Fmax)

50

100

150

250

kN

Dimensions of the test frame

Width

860

860

860

860

mm

Depth

655

655

685

685

mm

Height

2310

2310

2404

2404

mm

Test area depth

Unlimited

Test area width between the lead screws

610

610

610

610

mm

Test area height, max.

1350

1350

1350

1350

mm

Crosshead travel

1350

1350

1350

1350

mm

Lateral guidance of the moving crosshead

Via precision bearings on four hard-chromed guide columns (40 mm diameter up to 250 kN, 50 mm diameter above 250 kN)

Test speed range

0.001 mm/h to 100 mm/min

Return speed

100

100

100

100

mm/min

Accuracy of the test speed

< ± 0.1 % (measured over an interval of at least 5 s or 10 mm travel)

Position transducer travel resolution

0.068

0.068

0.068

0.068

nm

Weight

840

840

1120

1120

kg

POSCO Tests Corrosion Resistance of Steels with ZwickRoell Creep Testing Machines

POSCO, with an annual production of over 40 million tons, is one of the largest steel producers in the world. South Korea’s first integrated steel mill is headquartered in Pohang and produces steel products for the automotive, shipbuilding, energy and construction industries, as well as for machines and home appliances. The company’s objective is to secure its competitive position in the long term and support future trends with its premium steel.
Electromechanical creep testing machines Kappa 100 DS with salt spray chambers
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