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Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Mechanical Engineering

Brigham Young University

Theses and Dissertations

2012

Synthetic aperture

Articles 1 - 2 of 2

Full-Text Articles in Engineering

Three Dimensional Characterization Of Vocal Fold Fluid Structure Interactions, Joseph R. Nielson Jul 2012

Three Dimensional Characterization Of Vocal Fold Fluid Structure Interactions, Joseph R. Nielson

Theses and Dissertations

Voice quality is strongly linked to quality of life; those who suffer from voice disorders are adversely affected in their social, family, and professional relationships. An effort has been made to more fully understand the physics behind how the voice is created, specifically the fluid structure interactions that occur during vocal fold vibration. Many techniques have been developed and implemented to study both the motion of the vocal folds and the airflow that creates the motion. Until recently these techniques have sought to understand a highly three-dimensional phenomenon with 1D or 2D perspectives.This research focuses on the development and implementation …


Microscopic Light Field Particle Image Velocimetry, Bryce Adam Mcewen Jun 2012

Microscopic Light Field Particle Image Velocimetry, Bryce Adam Mcewen

Theses and Dissertations

This work presents the development and analysis of a system that combines the concepts of light field microscopy and particle image velocimetry (PIV) to measure three-dimensional velocities within a microvolume. Rectanglar microchannels were fabricated with dimensions on the order of 350-950 micrometers using a photolithographic process and polydimethylsiloxane (PDMS). The flow was seeded with fluorescent particles and pumped through microchannels at Reynolds numbers ranging from 0.016 to 0.028. Flow at Reynolds numbers in the range of 0.02 to 0.03 was seeded with fluorescent particles and pumped through microchannels. A light field microscope with a lateral resolution of 6.25 micrometers and …