Fatigue behaviour of a barely visible impact damaged carbon fibre reinforced epoxy laminate
| dc.contributor.author | Komus, Alastair | |
| dc.contributor.examiningcommittee | Jayaraman, Raghavan (Mechanical and Manufacturing Engineering) Polyzois, Dimos (Civil Engineering) | en |
| dc.contributor.supervisor | Singh, Meera (Mechanical and Manufacturing Engineering) | en |
| dc.date.accessioned | 2011-01-19T17:05:27Z | |
| dc.date.available | 2011-01-19T17:05:27Z | |
| dc.date.issued | 2011-01-19T17:05:27Z | |
| dc.degree.discipline | Mechanical and Manufacturing Engineering | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Composite materials have high in-plane mechanical properties, but are susceptible to out-of-plane impact damage. The use of non-destructive evaluation techniques, combined with mechanical testing, was investigated to characterize the progression of post-impact static and fatigue damage of composite laminates. Quasi-isotropic carbon/epoxy specimens were impacted at energy levels of 35 J and 50 J. The initial damage was characterized using ultrasonic C-scan and thermography. Residual strength testing revealed that the compressive static strength of the test specimens was reduced by over 50%. Digital image correlation was used to characterize the growth of damage and the local strain during compression-compression fatigue tests. Initially, no significant statistical trend could be measured when the fatigue data was plotted as a stress-life curve. When stress concentration factors were used to calculate and plot the local stress amplitude, a correlation with fatigue life was observed. The undamaged fatigue data was altered using damage factors which allowed for post-impact fatigue life predictions. | en |
| dc.description.note | February 2011 | en |
| dc.format.extent | 3533553 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/1993/4374 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.subject | Fatigue | en |
| dc.subject | Composite | en |
| dc.subject | Impact | en |
| dc.title | Fatigue behaviour of a barely visible impact damaged carbon fibre reinforced epoxy laminate | en |
| dc.type | master thesis | en_US |