In this work, the uniaxial and biaxial fatigue behaviour of maraging steel (18Ni300) obtained by additive manufacturing was studied. The material evaluated using several load paths different levels. predictive capacity life crack initiation angle critical plane methods Liu (I II), Chu, Conle, Bonnen (CCB) were evaluated. results showed that normal stresses had a strong effect on life. general, ...

Meanders form a set of combinatorial problems concerned with the enumeration of self-avoiding loops crossing a line through a given number of points, n. Meanders are considered distinct up to any smooth deformation leaving the line fixed. We use a recently developed algorithm, based on transfer matrix methods, to enumerate plane meanders. This allows us to calculate the number of closed meander...

In this work, the fatigue behaviour of 316 stainless steel is studied with different critical plane models. Seven cylindrical samples were used for study, being subjected to complex loading paths, generating combined stresses along axial and transversal sample directions, these being: individual stress, hoop alternating a proportional combination non-proportional L-shaped square-shaped stress. ...

The dynamic propagation of a bifurcated crack under arbitrary loading is studied. Under plane loading con2gurations, it is shown that the model problem of the determination of the dynamic stress intensity factors after branching is similar to the anti-plane crack branching problem. By analogy with the exact results of the mode III case, the energy release rate immediately after branching under ...

this study was an attempt to investigate the comparative impact of two types of teaching approaches, namely content-based (cbi) and task-based (tblt) instruction on the reading comprehension of iranian efl learners. for this purpose, sixty intermediate students from a pool of eighty five students studying at a private language school were chosen using a piloted pet. the students were then rando...

In this paper, the free vibration analysis of moderately thick rectangular plates axially moving with constant velocity and subjected to uniform in-plane loads is investigated by the spectral finite element method. Two parallel edges of the plate are assumed to be simply supported and the remaining edges have any arbitrary boundary conditions. Using Hamilton’s principle, three equations of moti...

We study the superfluid character of a dipolar Bose-Einstein condensate (DBEC) in a quasi-two dimensional geometry. We consider the dipole polarization to have some nonzero projection into the plane of the condensate so that the effective interaction is anisotropic in this plane, yielding an anisotropic dispersion relation. By performing direct numerical simulations of a probe moving through th...

Transition from chaotic to quasi-periodic phase in modified Lorenz model is analyzed by performing the contact transformation such that the trajectory in R is projected on R. The relative torsion number and the characteristics of the template are measured using the eigenvector of the Jacobian instead of vectors on moving frame along the closed trajectory. Application to the circulation of a flu...