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Deformation tests ( constant T )

Deformation tests ( constant T ). constant strain rate. constant stress (creep). Constant strain rate testing . Temperature Chamber Instron 3119 (-70 °C / 250 °C ). At our lab: Electromechanical ( Instron 1123 or 5567). Servohydraulic Testing Machines (MTS 810).

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Deformation tests ( constant T )

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  1. Deformation tests ( constant T ) constant strain rate constant stress (creep)

  2. Constant strain rate testing Temperature Chamber Instron 3119 (-70 °C / 250 °C ) At our lab: Electromechanical (Instron 1123 or 5567) Servohydraulic Testing Machines (MTS 810) Universal Electromechanical Testing Machine Instron 5567 (dual column table top, 30 kN) + Extensometer INSTRON 2630-014 (g.l. 10 mm, range 50 %)

  3. Constant strain rate behaviour

  4. ... details at T = 573 K (Th > 0.6 ! For the Al-alloy) … why not constant loading-rate experiment?

  5. Creep Testing: top-lever machine

  6. Compression Test Compression Cage P P initial state after creep P 10 mm

  7. Creep behaviour

  8. : time to fracture : minimum creep rate or, more general: Test of Monkman-Grant for Cu The Monkman-Grant Relationship for time to fracture where: 0.77<m<0.93; 0.48<BMG<1.3 for Al, Cu, Ti, Fe and Ni base alloys (from Monkman-Grant research)

  9. ksi Fig a Engineering Estimates of Creep Behaviour Larson-Miller parameter (LM) ksi

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