...Thomas Bouchenot; Kirtan Patel; Ali P. Gordon; Sachin Shinde While industrial gas turbine blades are commonly designed to resist creep and high-cycle fatigue (HCF) failure, the combination of these two loading conditions is seldom considered. The effect of creep damage elicited prior or concurrent...

...Aditya Gokhale; R. Sarvesha; Rajesh Prasad; Sudhanshu S. Singh; Jayant Jain The study presents the anisotropy in the indentation creep response of zinc. Indentation creep tests were conducted on grains with three different orientations, namely, 〈 0001 〉, ⟨ 11 2 ¯ 0 ⟩ , and ⟨ 10 1 ¯ 0...

... – 365 . 10.1016/0266-3538(89)90047-X 5 Yancey , R. N. , and Pindera , M. J. , 1990 , “ Micromechanical Analysis of the Creep Response of Unidirectional Composites ,” ASME J. Eng. Mater. Technol. , 112 , pp. 157 – 163 . 10.1115/1.2903302 6 Fisher , F. T. , and Brinson...

...Dongsheng Li; Said Ahzi; Mohammad Khaleel 15 10 2011 26 10 2011 26 10 2011 12 12 2011 12 12 2011 biomedical materials calcium compounds compressibility creep crystal microstructure fibre reinforced composites finite element analysis micromechanics molecular...

... and finite strain), bending and creep tests. The failure, plasticity, and elasticity parameters modifications are established. Tensile and bending tests lead to some similar characteristics evolution as, for example elastic modulus values. The creep behavior evolution is more complex to understand. Both...

... of mechanical stress on oxygen diffusion, a sequentially coupled deformation-diffusion analysis was carried out for a generic specimen geometry under creep loading condition using a submodeling technique. The material constitutive behavior was described by a crystal plasticity model at the grain level...

...Calvin M. Stewart; Ali P. Gordon; Erik A. Hogan; Ashok Saxena Creep deformation and rupture experiments are conducted on samples of the Ni-base superalloy directionally solidified GTD-111 tested at temperatures between 649 ° C and 982 ° C and two orientations (longitudinally and transversely...

...M. E. Kassner; P. Geantil; R. S. Rosen This study reports the significant ambient temperature creep plasticity at stresses below the conventional 0.2% plastic strain off-set yield stress. This is partially due to the relatively high strain-rate sensitivity of 304 stainless steel. Cold-working...

...Peter Mayr; Stefan Mitsche; Horst Cerjak; Samuel M. Allen In this work, three joints of a X11CrMoWVNb9-1-1 (P911) pipe were welded with three filler metals by conventional arc welding. The filler metals varied in creep strength level, so that one overmatched, one undermatched, and one matched...

.... 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...

...A. Akbari-Fakhrabadi; R. Mahmudi; A. Karsaz; A. R. Geranmayeh The creep behavior of Cu–0.3Cr–0.1Ag alloy was investigated by the impression creep testing technique and compared with that of pure copper under constant punching stress in the range 80–550 MPa at temperatures in the range 688–855 K...

...Alberto Polar; J. E. Indacochea; M. L. Wang The creep evolution was followed by conducting magnetic measurements on ferromagnetic steel samples exposed to different creep strains at a constant temperature. 410 stainless steel (410 SS) rods were submitted to creep at 625 ° C applying a constant...

...Nicola Bonora; Luca Esposito The increasing demand of reliable creep design for very long lives (exceeding 100.000 h), as those for high stress-low temperatures and high temperature-low stress regimes, requires a model formulation capable to account for the nonlinearity in the stress dependence...

.... Engineering stress versus strain diagrams for both mentioned temperatures, curves representing the effect of temperature on specimen elongation, and short-time creep curves are given. Notch impact energy test was also carried out. Taking into consideration the service life of the final product...

... in constrained configuration space are just creep or relaxation processes of materials. The Hamilton principle can be considered as a fundamental principle of rheology. 12 08 2008 19 03 2009 09 12 2009 09 12 2009 creep entropy force relaxation rheology state-space methods...

... history, the shot-peened residual stresses may change due to thermal exposure, creep, and cyclic loading. This paper describes a methodical approach for characterizing and modeling residual stress relaxation under elevated temperature loading, near and above the monotonic yield strength of nickel-base...

... and creep resistance, low weight, and high strength. An inorganic fireproof matrix, known as geopolymer, was used to fabricate the high modulus carbon fiber composites. Previous studies have shown that these composites are strong, durable, lightweight, and can exhibit excellent performance up to 400 ° C...

...Ryuji Sugiura; A. Toshimitsu Yokobori, Jr.; Masaaki Tabuchi; Akio Fuji; Takeshi Adachi In components under static creep loading condition, the multiaxial stress fields appear due to the plastic constraint and they produce a more brittle type cracking behavior. From a practical standpoint...

... pressure, which is applied as a boundary condition on the internal faces of the foam pores. The pore pressure arises due to both ideal gas expansion during a temperature change as well as outgassing of species from the foam polymer material. Material creep and elastic stiffening are also incorporated via...

... deformations incompressible material creep boundary value problem(s) (BVP) The mechanical properties of a plant’s tissues play a critical role in the plant’s development, physiology, and survival ( 1 2 3 4 5 ). Consequently, an understanding of the plant’s mechanical behavior and its interplay...