dc.creator | Krishnan, Arun | |
dc.date.accessioned | 2020-08-23T16:01:24Z | |
dc.date.available | 2010-12-07 | |
dc.date.issued | 2010-12-07 | |
dc.identifier.uri | https://etd.library.vanderbilt.edu/etd-12012010-152033 | |
dc.identifier.uri | http://hdl.handle.net/1803/14970 | |
dc.description.abstract | Composites and adhesive joints are being increasingly used in modern structures.
It becomes very important to characterize the failure in such materials especially at the
interface between constituents. This dissertation is focused on interfacial failure in
composites and bonded polymers. A short-beam shear fracture approach is developed to
measure the mode-II fracture toughness of materials with a preferred interface. This
method is more efficient than previous methods due to minimal friction between crack
faces. A novel failure criterion proposed by Leguillon (2002) is used to predict crack
initiation from notches. This dissertation advances the scope of this criterion to predict
failure from notches with a connected interface. Same- and bi-material systems are tested
under three-point bending to provide relevant data for verification which is also expected
to be a benchmark for future numerical simulations. Finally, the compression-after-impact
(CAI) of glass/vinyl ester composites subject to sea water aging is investigated
experimentally. A reduced order multiscale computational model is used to explain the
damage mechanisms in the composite and to capture the experimental degradation in CAI
strength. | |
dc.format.mimetype | application/pdf | |
dc.subject | Mixed-mode Fracture | |
dc.subject | Compression-after-impact | |
dc.subject | Mode-II fracture toughness | |
dc.subject | Interfacial failure | |
dc.subject | composites | |
dc.subject | Multiscale Homogenization | |
dc.subject | Glass/Vinyl Ester composite | |
dc.title | The Interfacial Failure of Bonded Materials and Composites | |
dc.type | dissertation | |
dc.contributor.committeeMember | Prof. P.K. Basu | |
dc.contributor.committeeMember | Prof. Sankaran Mahadevan | |
dc.contributor.committeeMember | Prof. Carol Rubin | |
dc.contributor.committeeMember | Prof. L. Roy Xu | |
dc.type.material | text | |
thesis.degree.name | PHD | |
thesis.degree.level | dissertation | |
thesis.degree.discipline | Civil Engineering | |
thesis.degree.grantor | Vanderbilt University | |
local.embargo.terms | 2010-12-07 | |
local.embargo.lift | 2010-12-07 | |
dc.contributor.committeeChair | Prof. Caglar Oskay | |