Min Lu

Adjustable Aperture Multiplexing Technique in Electronic Speckle Pattern Interferometry


Front	Back

ISBN:

978-3-8440-6673-9

Series:

Reports on Measurement and Sensor Systems
Herausgeber: Prof. Dr.-Ing. Alexander W. Koch
München

Keywords:

speckle interferometry; multiple-parameter measurement; ESPI

Type of publication:

Thesis

Language:

English

Pages:

206 pages

Figures:

87 figures

Weight:

305 g

Format:

21 x 14,8 cm

Bindung:

Paperback

Price:

49,80 € / 62,30 SFr

Published:

April 2019

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Abstract

In this thesis a novel phase-shifting technique, "Adjustable Aperture Multiplexing (AAM)", was developed by multiplexing construction of virtual single apertures to produce tunable spatial carrier frequencies to recorded interferograms. It overcomes the main drawbacks of the existing phase-shifting techniques, and offers competitive advantages. Meanwhile, three exemplary measurements were made to verify the AAM technique, including simultaneous out-of-plane displacement-slope measurement, in-plane rotation angular measurement, and 3D displacement measurement.

In dieser Arbeit wurde eine neuartige Phasenverschiebungstechnik, "Adjustable Aperture Multiplexing (AAM)", durch eine Multiplex-Konstruktion von virtuellen Aperturen entwickelt, um einstellbare räumliche Trägerfrequenzen zu generieren. Es überwindet die Nachteile der vorhandenen Phasenverschiebungstechniken und bietet Wettbewerbsvorteile an. Um die AAM-Technik zu verifizieren wurden drei Messungen durchgeführt, inkl. simultaner Messung der out-of-plane Deformation und Deformationsgradient, in-plane Drehwinkelmessung und 3D-Deformationsmessung.