Show simple item record

dc.contributor.authorKulp, Andrew Brooksen_US
dc.date.accessioned2014-03-14T20:38:30Z
dc.date.available2014-03-14T20:38:30Z
dc.date.issued2012-05-21en_US
dc.identifier.otheretd-05242012-182950en_US
dc.identifier.urihttp://hdl.handle.net/10919/33204
dc.description.abstractThe main goal of this project was to compare the changes in statistical variation and Weibull characteristics of the strength of glass rods as modified by heat treatment with and without an ion exchange bath. Several sample groups of 30 sodium borosilicate glass rod specimens were heat treated at various temperatures in air and in a potassium nitrate salt bath to induce an ion exchange process. All samples were then tested to failure in 4-point bending to assess the resulting Modulus of Rupture (MOR). Statistical analysis techniques and Weibull analysis were used to study the variations which occur within and between strength distributions of each sample group. A smaller sampling of test groups was subjected to fractographic analysis to study the effect of ion exchange on fracture features. The data shows that the ion exchange process caused a statistically significant increase in the strength of the glass rods. Samples which were heat treated do not show any significant changes in average strength. The fractographic analysis suggests that no changes in fracture morphology occurred as a result of ion exchange process, and that the critical flaw size population was not significantly different.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartKulp_AB_T_2012.pdfen_US
dc.relation.haspartKulp_AB_2012_Copyright.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectWeibull Analysisen_US
dc.subjectStatistical Analysisen_US
dc.subjectStrengthen_US
dc.subjectIon Exchangeen_US
dc.subjectGlassen_US
dc.subjectFractographyen_US
dc.titleAnalysis of Strength Variation in Glass Due to Ion Exchangeen_US
dc.typeThesisen_US
dc.contributor.departmentMaterials Science and Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMaterials Science and Engineeringen_US
dc.contributor.committeechairClark, David E.en_US
dc.contributor.committeememberSuchicital, Carlos T. A.en_US
dc.contributor.committeememberPickrell, Gary R.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05242012-182950/en_US
dc.date.sdate2012-05-24en_US
dc.date.rdate2012-06-13
dc.date.adate2012-06-13en_US


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record