A new time-domain numerical method is presented for the estimation of noise reduction by the diffraction and finite impedance of barriers.
Each point in the object is imaged into a diffraction pattern of finite width, and the final image is a sum of individual diffraction patterns.
In this work, the residual stress distribution in Cu after single-pass equal-channel angular pressing (ECAP) was evaluated using neutron diffraction and the finite element method (FEM).
In order to estimate v(f) and Q(f) from waveform data obtained by the ultrasonic wave transmission method, it is necessary to correct the data for the effects of dynamic response of the source and receiver transducers and of the wave diffraction caused by finite size source.
The purpose of this work is to investigate the residual stress distribution induced by laser shock processing in a 2050-T8 aluminiumcalloyuminium alloy with both X-ray diffraction measurements and 3D finite element simulation.
The deformation, damage and rupture mechanisms at cryogenic temperature of an extra low interstitial Ti 6Al 4V alloy obtained by powder metallurgy are investigated through tensile tests, scanning electron microscopy observations, electron backscattered diffraction (EBSD) mapping and finite elements analysis.
Bridge-shaped free-standing Si membranes (FSSM), strained by low-pressure (LP) SixNy, plasma-enhanced (PE) SixNy and SixGe1−x stressors, were measured by convergent beam electron diffraction (CBED) and the finite element method (FEM).
For simplicity, we approximate the laser intensity distribution at the focus as a Gaussian-Lorentzian spatial profile with widths ω 0 and z 0 in the radial and axial dimensions, respectively, assuming the laser output from the fiber core is a TEM00 mode Gaussian beam [ 36], and without considering the diffraction effects of the finite aperture size of the lenses.
This paper presents the analyses of these residual stresses in stamped valves by X-ray diffraction and also by the finite element method.
The stress strain relationship between ferrite and martensite phases in the commercial dual-phase DP980 steel was studied using in situ neutron diffraction and the crystal plasticity finite element method (CPFEM).
