Modal analysis technology review

Stochastic System Identification for Operational Modal Analysis: A Review

This paper reviews stochastic system identification methods that have been used to estimate the modal parameters of vibrating structures in operational conditions. It is found that many classical input-output methods have an output-only counterpart. For instance, the Complex Mode Indication Function (CMIF) can be applied both to Frequency Response Functions and output power and cross spectra. T...

Stochastic system identification for operational modal analysis: a review AUTHORS

Modal Fourier Wavefront Reconstruction Using FPGA Technology

Atmospheric turbulence introduces optical aberration into wavefronts arriving at ground-based telescopes. The wavefront reconstruction using fast Fourier transforms (FFT) and spatial filtering is computationally tractable and sufficiently accurate in large Shack-Hartmann-based adaptive optics systems (up to 10,000 actuators). A first design has been developed using a Graphical Processing Units ...

A modal analysis of modal subordination

In this paper I will give a modal two-dimensional analysis of presupposition and modal subordination. I will think of presupposition as a non-veridical propositional attitude. This allows me to evaluate what is presupposed and what is asserted at different dimensions without getting into the binding problem. What is presupposed will be represented by an accessibility relation between possible w...

Modal Analysis Turboshaft Test Stand Motor Designed by Using ANSYS

Today, modeling is critical for cognition and analysis of designers in industry field to meet their needs and design based on design requirements and available facilities to accelerate production and development of components of industrial engines. In this study, one structure has been proposed, designed, and analyzed based on turboshaft marine engine type to test this kind of engine in order t...