Development and Characterization of an LED-Based Light Source for High-Speed Schlieren Imaging

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atmire.migration.oldid4045
dc.contributor.advisorJohansen, Craig
dc.contributor.advisorMurari, Kartikeya
dc.contributor.authorLincoln, Daniel
dc.contributor.committeememberDe Visscher, Alex
dc.contributor.committeememberMorton, Chris
dc.contributor.committeememberWood, David
dc.date.accessioned2016-02-03T19:10:23Z
dc.date.available2016-02-03T19:10:23Z
dc.date.issued2016-02-03
dc.date.submitted2016en
dc.description.abstractThis work investigates the viability of using a cost effective, 623 nm light emitting diode (LED) based light source for high-speed schlieren imaging. The pulser circuit used to drive the LED was characterized on the basis of input response, pulse train characteristics, and pulse energies. Relative brightness data was measured with a photodiode and further examined within a schlieren system. Flow images of decaying, cylindrical shocks were obtained with the LED system and benchmarked against a high intensity discharge (HID) lamp. It was found that the LED could be overdriven up to 20 times the rated current while generating down to 100 ns pulses at up to a 1 MHz repetition rate. Moreover, although the LED system produced higher signals and reduced exposure times, similar image detail was observed for each light source. However, the LED exhibited a distinct advantage over the HID lamp in terms of image blur.en_US
dc.identifier.citationLincoln, D. (2016). Development and Characterization of an LED-Based Light Source for High-Speed Schlieren Imaging (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/25637en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/25637
dc.identifier.urihttp://hdl.handle.net/11023/2827
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectOptics
dc.subjectEngineering--Aerospace
dc.subject.classificationSchlieren imagingen_US
dc.subject.classificationCylindrical shock wavesen_US
dc.subject.classificationLight-emitting diode (LED)en_US
dc.subject.classificationHigh-intensity discharge (HID) lampen_US
dc.titleDevelopment and Characterization of an LED-Based Light Source for High-Speed Schlieren Imaging
dc.typemaster thesis
thesis.degree.disciplineMechanical and Manufacturing Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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