No abstract

No abstract

:A finite fracture approach based on the Coupled Criterion is used to analyze multi-cracking in a woven ceramic matrix composite. In-situ micrographic observations obtained during tensile and bending tests performed on chemical vapor infiltrated SiC/SiC samples are utilized to identify cracking mechanisms. A two dimensional finite element model is generated to approximate the actual specimen section geometry including matrix, fiber tows and porosity. Numerical simulations are carried out with a dedicated algorithm to simulate nucleation and propagation of cracks. Comparing the simulation results with experimental ones shows that the model captures the main cracking features.

No abstract

No abstract

Key Points• Nasal packing type was not associated with postoperative cerebrospinal fluid leaks • Nondissolvable packing conferred an increased risk for postoperative sinonasal infections • Nasal packing type did not influence short-and long-term quality-of-life scores