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dc.rights.licenseRestricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.
dc.contributorHuang, Liping
dc.contributorShi, Yunfeng
dc.contributorTomozawa, Minoru
dc.contributor.authorOistad, Brian
dc.date.accessioned2021-11-03T09:23:07Z
dc.date.available2021-11-03T09:23:07Z
dc.date.created2021-02-24T14:38:45Z
dc.date.issued2020-12
dc.identifier.urihttps://hdl.handle.net/20.500.13015/2647
dc.descriptionDecember 2020
dc.descriptionSchool of Engineering
dc.description.abstractOxide glass has held a critical role in science and technology despite a continuously evolving market; today its importance in display technologies for consumer electronics and automotive fields, as well as optical fibers for high-speed communication cannot be understated. To maintain and proliferate glass as a material solution to new engineering challenges, we must first build a robust understanding of ways to mediate glass’ obvious shortcomings (e.g., brittleness). As it stands today, however, there are significant gaps in our knowledge of how glass responds in the instant that a mechanically damaging event occurs, such as dropping a cellular phone screen against a sharp surface or a stone striking a windshield. Knowledge of glass structure-property relationships, especially regarding glass failure from mechanical stimuli, would help accelerate glass prototyping and enable us to create what is referred as ‘designer glass’, which is made special to the demands of the consumer.This thesis work demonstrated the practicality of utilizing micro-Brillouin spectroscopy to map the stress distributions in glass in-situ under sharp contact loading. A high-intensity laser was used as the probing light source and coupled with an inverted Vickers indenter, to collect Brillouin spectra as a function of spatial position. Regions under compressive and tensile stress, and the boundary between them, were for the first time observed in glass in-situ under indentation. Boron content was varied in the samples to illustrate the differences in mechanical response of glass to indentation. It was found that a higher content of trigonal boron increases the sample’s propensity to densify and reduces the tensile stress build-up that is responsible for the sub-surface crack nucleation, thus increasing the crack resistance of glass.
dc.language.isoENG
dc.publisherRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofRensselaer Theses and Dissertations Online Collection
dc.subjectMaterials engineering
dc.titleIn-situ micro-Brillouin spectroscopy study of calcium aluminoborosilicate glasses under vickers indentation
dc.typeElectronic thesis
dc.typeThesis
dc.digitool.pid180436
dc.digitool.pid180437
dc.digitool.pid180438
dc.rights.holderThis electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
dc.description.degreeMS
dc.relation.departmentDept. of Materials Science and Engineering


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