... the creep response of the magnetically annealed and reference samples, short 45 min duration creep tests were carried out. An equivalent to the macroscale creep compliance was calculated using the aforementioned nanocreep data. Using the continuous contact compliance (CCC) analysis, the phase lag angle, tan...

... the creep strength of the P911 grade pipe base material. The long-term objective of this work was to study the influence of weld metal creep strength on the overall creep behavior of the welded joints and their failure mechanism. Uniaxial creep tests at 600 ° C and stresses ranging from 70 MPa to 150 MPa...

.... This paper investigates the effect of embedded PZT crystals on the overall creep behavior of sandwich beams comprising of glass fiber reinforced polymer laminated skins and polymer foam core, which could potentially be used as a damage-detecting smart structure. Uniaxial quasi-static and creep tests were...

... registering a monotonic drop, the stress first increases then decreases. The rate of change of stress, therefore, is initially positive and then becomes negative. Similarly, in creep tests, the strain was found to decrease at first, and then began to increase. This has been labeled as rate-reversal...

... optimization scheme. The crystal plasticity parameters, calibrated from constant strain rate and creep tests on single colony crystals, are adjusted to account for the size effects in the polycrystalline microstructure. In addition, tension-compression asymmetry is also accounted for in the slip system...

... recovery-creep creep testing 26 08 2005 26 02 2006 2006 American Society of Mechanical Engineers ...

... stress-strain relations hysteresis creep testing fatigue testing In this paper the reversing dc electrical potential technique ( 1 2 ) has been used for the determination of the damage mode during creep fatigue interaction. The creep-fatigue damage mechanism is not merely an independent sum...

.... However, the kinematic stress f is now represented by K . Tensor quantities appear in boldface font. polymers amorphous state deformation creep testing recovery-creep viscoplasticity 26 09 2004 09 03 2005 The model, modified for finite deformation (FVBO...

... creep testing stress effects Polysilicon Material Properties Creep Measurements High Temperature Plastic Deformation In this paper, work done to identify material properties of polysilicon thin films is discussed, addressing the challenges of defining and measuring at smaller length scales...

... and creep tests are conducted at temperatures ranging from room temperature (RT) to 1038 ° C to characterize the deformation response. The constitutive model is implemented as a User MATerial subroutine (UMAT) in ABAQUS (2003, Hibbitt, Karlsson, and Sorensen, Inc., Providence, RI, v6.3) and a parameter...

...Tim Jaglinski; Roderic Lakes Commercial, aluminum die-cast alloys are subject to long-term stresses leading to viscoelastic material responses resulting in inefficient engine operation and failure. Constant load creep tests were conducted on aluminum die-casting alloys: B-390, eutectic Al-Si...

..., temperatures of 500 ° C and 620 ° C , and the times varied between 48 and 120 hours. Following the creep tests all specimens were evaluated magnetically and then metallurgically by optical and scanning electron microscopy, x-ray diffraction (XRD) and by energy dispersive spectroscopy (EDS). The microstructural...

... 2003 19 February 2004 09 11 2004 ageing polymers creep anelastic relaxation creep testing elastic constants fibre reinforced composites From the point of view of structural analysis, creep is the most important feature of polymer behavior; it controls the design of most...

... June 2000 28 January 2001 wear corrosion creep testing boilers temperature distribution austenitic steel The method of calculating the creep life of superheater/reheater tubes installed in fossil-fuelled boilers is well established and automated. There are a number of computer...

...; revised manuscript received March 16, 2000. Guest Editors: Raj Mohan and Rishi Raj. 01 January 2000 16 March 2000 creep testing crack detection fracture mechanics life testing welding structural engineering alloy steel In recent years, there has been considerable...