Mode I interlaminar fracture was studied using double cantilever beam (DCB) specimens of unidirectional carbon fiber/epoxy composites. Moire interferometry was employed to measure crack opening displacement (COD) in the vicinity of a crack tip. Measured values of COD were compared with those theoretically obtained. It was found that the slope at the beam root of the specimens plays an important role in increasing the values of COD. Fracture toughness GI was evaluated by two kinds of methods, and the results were compared with those of the COD measurement.
|Number of pages||5|
|Journal||Transactions of the Japan Society of Mechanical Engineers Series A|
|Publication status||Published - 1993|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering