The development of rail defects due to the presence of geometry defects in Class 1 Railroads
| Author(s) | Einbinder, Daniel | |
| Date Accessioned | 2016-01-20T13:19:25Z | |
| Date Available | 2016-01-20T13:19:25Z | |
| Publication Date | 2015 | |
| Abstract | The purpose of this thesis is to develop a relationship between the development of a rail defect and the presence of a geometry defect prior to the occurrence of the rail defect. This was done with the use of a Class 1 Railroad's geometry and rail defect data for their whole 22,000 mile system over a five year period. Regression analyses were performed using multilinear regression and multivariate adaptive regression splines (MARS) that showed that the occurrence of a geometry exception or defect resulted in approximately 30% loss in rail life. A Bayesian Network was then developed with the use of NETICA. This network showed that the presence of a single geometry defect increased the likelihood of a rail defect by approximately seven, with multiple geometry defects increasing this likelihood even more. These findings show that geometry defects do have an impact on the development of a rail defect. | en_US |
| Advisor | Zarembski, Allan M. | |
| Degree | M.C.E. | |
| Department | University of Delaware, Department of Civil and Environmental Engineering | |
| Unique Identifier | 935317768 | |
| URL | http://udspace.udel.edu/handle/19716/17394 | |
| Publisher | University of Delaware | en_US |
| URI | http://search.proquest.com/docview/1725752349?accountid=10457 | |
| dc.subject.lcsh | Railroad rails -- Defects -- United States. | |
| dc.subject.lcsh | Geometry. | |
| dc.subject.lcsh | Regression analysis. | |
| dc.subject.lcsh | Splines. | |
| Title | The development of rail defects due to the presence of geometry defects in Class 1 Railroads | en_US |
| Type | Thesis | en_US |