{"id":{"repo_id":"ohiolink","oai_identifier":"oai:etd.ohiolink.edu:wright1362655198"},"canonical_url":"https://search.dev.ndltd.org/etd/ohiolink/oai:etd.ohiolink.edu:wright1362655198","repository":{"repo_id":"ohiolink","name":"OhioLINK","base_url":"https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai"},"display":{"title":"CHARACTERIZATION OF CERAMIC MATRIX COMPOSITE MATERIALS USING MILLIMETER-WAVE TECHNIQUES","abstract":"This thesis describes studies that were carried out on Ceramic Matrix Composite (CMC) materials. These materials were provided by the Air Force Research Laboratory for evaluation in the millimeter-wave frequency region with the goal of developing Non-Destructive Evaluation techniques. This thesis centers on describing the measured reflections from an Oxide/Oxide and SiC/SiNC CMC materials. Models were derived from the Fresnel equations to account for the reflected and transmitted waves in these materials. System models were developed to describe the power coupling of the spectra measured in three separate measurement systems. Using these models the complex index of refraction was determined for the Oxide/Oxide material, and the front surface reflectance was determined for the SiC/SiNC material. A discussion of changes in sample optical properties due to material fatiguing will be included. This document will conclude with the complete spectra and statistical analyses of the Oxide/Oxide, and SiC/SiNC materials at 140-220, and 585-630 GHz.","abstract_html":"This thesis describes studies that were carried out on Ceramic Matrix Composite (CMC) materials. These materials were provided by the Air Force Research Laboratory for evaluation in the millimeter-wave frequency region with the goal of developing Non-Destructive Evaluation techniques. This thesis centers on describing the measured reflections from an Oxide/Oxide and SiC/SiNC CMC materials. Models were derived from the Fresnel equations to account for the reflected and transmitted waves in these materials. System models were developed to describe the power coupling of the spectra measured in three separate measurement systems. Using these models the complex index of refraction was determined for the Oxide/Oxide material, and the front surface reflectance was determined for the SiC/SiNC material. A discussion of changes in sample optical properties due to material fatiguing will be included. This document will conclude with the complete spectra and statistical analyses of the Oxide/Oxide, and SiC/SiNC materials at 140-220, and 585-630 GHz.","abstract_has_math":false,"creators":["Bischoff, Matthew Lee"],"institution":"Wright State University","degree_name":"Master of Science (MS)","degree_level":"masters","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Petkie, Doug"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012","date_published":"2012","updated_at":"2026-07-24T03:36:39Z","subjects":["Physics","Optics","Materials Science"],"languages":["English"],"rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://rave.ohiolink.edu/etdc/view?acc_num=wright1362655198","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Petkie, Doug"]},{"key":"dc:creator","label":"Author","values":["Bischoff, Matthew Lee"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012"]},{"key":"dc:publisher","label":"Institution","values":["Wright State University / OhioLINK"]},{"key":"dc:type","label":"Dc Type","values":["Electronic Thesis or Dissertation"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MS)"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Wright State University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physics","Optics","Materials Science"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. 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System models were developed to describe the power coupling of the spectra measured in three separate measurement systems. Using these models the complex index of refraction was determined for the Oxide/Oxide material, and the front surface reflectance was determined for the SiC/SiNC material. A discussion of changes in sample optical properties due to material fatiguing will be included. This document will conclude with the complete spectra and statistical analyses of the Oxide/Oxide, and SiC/SiNC materials at 140-220, and 585-630 GHz."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf","p.88","8.46 MB"]},{"key":"dc:title","label":"Title","values":["CHARACTERIZATION OF CERAMIC MATRIX COMPOSITE MATERIALS USING MILLIMETER-WAVE TECHNIQUES"]}]}],"canonical_facts":{"dc:contributor":["Petkie, Doug"],"dc:creator":["Bischoff, Matthew Lee"],"dc:date":["2012"],"dc:description":["This thesis describes studies that were carried out on Ceramic Matrix Composite (CMC) materials. These materials were provided by the Air Force Research Laboratory for evaluation in the millimeter-wave frequency region with the goal of developing Non-Destructive Evaluation techniques. This thesis centers on describing the measured reflections from an Oxide/Oxide and SiC/SiNC CMC materials. Models were derived from the Fresnel equations to account for the reflected and transmitted waves in these materials. System models were developed to describe the power coupling of the spectra measured in three separate measurement systems. Using these models the complex index of refraction was determined for the Oxide/Oxide material, and the front surface reflectance was determined for the SiC/SiNC material. A discussion of changes in sample optical properties due to material fatiguing will be included. This document will conclude with the complete spectra and statistical analyses of the Oxide/Oxide, and SiC/SiNC materials at 140-220, and 585-630 GHz."],"dc:format":["application/pdf","p.88","8.46 MB"],"dc:identifier":["http://rave.ohiolink.edu/etdc/view?acc_num=wright1362655198"],"dc:language":["English"],"dc:publisher":["Wright State University / OhioLINK"],"dc:rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"dc:subject":["Physics","Optics","Materials Science"],"dc:title":["CHARACTERIZATION OF CERAMIC MATRIX COMPOSITE MATERIALS USING MILLIMETER-WAVE TECHNIQUES"],"dc:type":["Electronic Thesis or Dissertation"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science (MS)"],"thesis:institution_name":["Wright State University"]},"updated_at":"2026-07-24T03:36:39Z"}