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Central Laboratory for Materials Mechanical Properties (CLaMMP)

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.

Facility Type: 

Instruments

  1. Crack opening displacement gages

    available for both static and dynamic tensile or compression tests. These include extensometers that can be used at temperatures up to 1100? C.

  2. Fatigue machine, equipped with a Centorr high temperature (1100C) environmental chamber.

    Test environments including vacuum, inert gas, liquids, or a controlled atmosphere can also be carried out.

  3. Five MTS machines (three servo-hydraulic, one servo-electric, and one screw driven tensile machine)

    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.

  4. Laser extensometer crack opening displacement gages

    available for both static and dynamic tensile or compression tests. These include extensometers that can be used at temperatures up to 1100C.

  5. 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.

  6. Three ATS constant load creep apparatus

    Used for creep and stress rupture experiments up to 1100C.