Results 251 to 260 of about 16,122 (303)

Creep-fatigue interactions in solders

IEEE Transactions on Components, Hybrids, and Manufacturing Technology, 1989
Solders in surface-mount-technology (SMT) joints are subjected to high homologous temperatures that cause the solder to deform and accumulate damage by both time-dependent and instantaneous mechanisms. The effects of frequency, stress range, mean stress, waveform (hold times on and off load), and mechanical history are investigated in bulk uniaxial ...
J.K. Tien, B.C. Hendrix, A.I. Attarwala
openaire   +1 more source

High temperature creep, fatigue and creep–fatigue interaction in engineering materials

International Journal of Pressure Vessels and Piping, 2001
Abstract An attempt has been made to systematize the criterion for the crack initiation, the crack growth and the final fracture in creep, fatigue and creep–fatigue interaction conditions at high temperatures. Reference has been made to the systematically designed studies performed hitherto by the authors and colleagues, including the comparative ...
Takeo Yokobori, A.Toshimitsu Yokobori
openaire   +1 more source

Creep-Fatigue-Oxidation Interactions

2012
The fracture maps of Ashby display the various modes of creep fracture. Creep damage results from the nucleation of cavities on grain boundaries. Viscoplastic deformation can be the controlling mechanism. Hull and Rimmer model is at the basis of diffusion controlled nucleation.
Dominique François, André Pineau, André Zaoui   +2 more
openaire   +1 more source

Creep-fatigue interaction in OFHC-copper

Scripta Metallurgica, 1983
Abstract OFHC-copper which is more susceptible to interaranular cavitation than the aluminum-five percent magnesium alloy in monotonic loading is also more susceptible to intergranular fracture under fatigue loading. The difference is most remarkable for the equal-ramp cycle shape.
S. Baik, R. Raj
openaire   +1 more source

Creep/fatigue/environmental interactions

1995
The cyclic behaviour of materials at high temperature is more complicated than its low-temperature equivalent, because the amplitude and the duration of the cycle both cause material damage.
R. K. Penny, D. L. Marriott
openaire   +1 more source

Creep-fatigue–environment interactions in INCONEL 617

Materials Science and Engineering: A, 2007
Creep-fatigue testing of alloy 617 was performed in air, vacuum, and purified Ar environments at 1000 °C. Tests were performed in axial strain control at total strain ranges of 0.3% and 1.0% (fully reversed) with hold times at maximum tensile strain ranging from 0 to 1800 s.
Terry C. Totemeier, Hongbo Tian
openaire   +1 more source

A PC-Based Modeling Tool for Creep, Fatigue, and Creep-Fatigue Interactions Using a Viscoplasticity Theory

Journal of Pressure Vessel Technology, 1991
Computational results for modeling one-dimensional stress relaxation, creep, fatigue, and creep-fatigue interaction phenomena of metals at elevated temperatures using a unifying thermodynamic theory of viscoplasticity are presented. The theory incorporates in a nonequilibrium formulation the idea of a “concealed” parameter α, originally due to Bridgman
J. T. Fong, B. Bernstein
openaire   +1 more source

The Behaviour of Creep-Fatigue Interactions in GH36 Superalloy

Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Process Industries; Technology Resources; General, 1985
In this paper, the behaviour of creep-fatigue interactions in GH36 superalloy at 650°C is determined and a number of strainrange-life relationships of is given. Strain Energy Partitioning Approach (SEP), developed previously by the present authors, is applied to predict high-temperature, low-cycle fatigue life for this superalloy by comparison with ...
Duan Zouxiang, Ning Youlian, He Jinrui
openaire   +1 more source

Intergranular Fracture under Creep-Fatigue Interaction

International Journal of Damage Mechanics, 1998
For metals under cyclic loading at elevated temperatures the interaction of fatigue failure with intergranular creep failure is studied by a micromechanical model. Focus here is on a range of relatively slow cycling, where creep damage dominates, or rapid cycling after that some creep damage has developed.
Helle S. Nielsen, Viggo Tvergaard
openaire   +1 more source

Mechanisms of Creep-Fatigue Interactions

1989
In this part an attempt is made (i) to show how intergranular fracture can be used to rationalise a number of observations related to high temperature fatigue behavior of metals and alloys and (ii) to analyse various forms of microstructural intergranular damage.
openaire   +1 more source