Abstract: A series of tests for creep, stress relaxation, and biaxial ratchetting of type 304 stainless steel after cyclic preloading were carried out to investigate their interaction. The interesting ...

Abstract: We previously proposed an elastic-plastic-creep model to estimate the fatigue strength of lead-free solder joints subjected to cyclic thermal loading. The proposed model requires detailed experimental ...

Abstract: The fatigue life of a material varies with the strain rate if it has time-dependent deformation. An interesting phenomenon related to the effect of the strain rate on the fatigue life can ...

Abstract: This paper treats the prediction of fatigue life of 60Sn-40Pb solder alloy using the plastic strain work density per unit time calculated from the proposed constitutive model for cyclic ...

Abstract: Time-dependent deformations such as creep and ratchetting of solder alloys are significant deformation phenomena that need to be understood to ensure the safety and reliability of solder joints ...

Abstract: This paper proposes a method to estimate basic material constants in an elasto-plastic-creep constitutive model for lead-free solders by conducting only a tensile test. The test employs a stepped ...

Abstract: This study first proposes a simple constitutive model for viscoplasticity, which includes the elastic, plastic, and creep strains independently. The plastic strain is evaluated by the flow rule ...

Abstract: Depending on casting methods, aluminum alloy cylinder heads differ greatly in quality and local strength as well as overall strength. Obviously, casting methods largely affect the durability of ...