Central Laboratory for Materials Mechanical Properties (CLaMMP)

Cook Hall, 1034
Tel: (847) 491-7780
Facility Director: David Dunand, MSE
Facility Manager: Mark E. Seniw

Vist the CLAMMP website here.

This NU-MRSEC funded facility provides testing equipment for studying the mechanical behavior of materials. We have the capability of conducting tension, compression, fatigue, creep, stress rupture, impact, and 3 or 4-point bend tests. Additional equipment is also available to perform tests in controlled atmospheres, vacuum, and cover the temperature range of 77.2°K to 1773°K.

The computer-interfaced MTS machines can perform static and dynamic mechanical tests that relate an applied force to the elastic, anelastic, and/or plastic deformation of solid materials. The facility also makes available investigation of strain or stress controlled fatigue experiments, fatigue crack initiation studies, fatigue crack propagation studies, cyclic hardening, cyclic softening and cyclic stress-stain curve measurements under computer control.


  1. Five MTS machines (three servo-hydraulic, one servo-electric, and one screw driven tensile machine) are available to perform static and dynamic mechanical tests and control such parameters as strain rate and rate of loading. Tests can be performed up to 50,000 lb (250kN) and as low as 250 grams.
  2. Three ATS constant load creep apparatus can be used for creep and stress rupture experiments up to 1100°C.
  3. Charpy tests can be conducted in the ranges of 0 - 357 J and 0 - 22.5 J. Izod tests can be conducted in the range of 0 - 22.5 J
  4. A laser extensometer, several contact extensometers and crack opening displacement gages are available for both static and dynamic tensile or compression tests. These include extensometers that can be used at temperatures up to 1100º C.
  5. One of the fatigue machines is equipped with a Centorr high temperature (1100 °C) environmental chamber. Test environments including vacuum, inert gas, liquids, or a controlled atmosphere can also be carried out.
  6. A metallurgical microscope can be attached to the testing frames enabling observation of real-time fatigue crack growth and examination of specimen surfaces during test cycling.

The Materials Research Science and Engineering Center (MRSEC) is supported by the National Science Foundation under NSF Award Number DMR-1121262. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect those of the National Science Foundation.
© 2012 Northwestern University