... materials in an attempt to construct an overall COR map in response to related foreign object damage (FOD) events. Results of CORs determined in CMCs are shown in Fig. 2 , where CORs are plotted as a function of impact velocity ( V ). Although the data scatter is large, due to the stochastic nature...

...Nesredin Kedir; D. Calvin Faucett; Luis Sanchez; Sung R. Choi The response of a silicon carbide (SiC) fibrous ceramic composite to foreign object damage (FOD) was determined at ambient temperature and velocities ranging from 40 to 150 m/s. Target specimens were impacted, at a normal incidence angle...

... is in part a work of the U.S. Government. ASME disclaims all interest in the U.S. Government's contributions. 13 07 2018 23 07 2018 slow crack growth (SCG) foreign object damage (FOD) ceramic matrix composite (CMC) life prediction elevated temperature Ceramic matrix...

.... , Ayre , M. , and Choi , S. R. , 2012 , “ Foreign Object Damage (FOD) in Thermal Barrier Coatings ,” Ceram. Trans. , 234 , pp. 245 – 255 . 10.1002/9781118491867.ch25 [12] Faucett , D. C. , Wright , J. , Ayre , M. , and Choi , S. R. , 2012 , “ Foreign Object Damage...

...Sung R. Choi; Zsolt Rácz Foreign object damage (FOD) phenomena of two gas-turbine grade silicon nitrides (AS800 and SN282) were assessed at ambient temperature applying impact velocities from 20 to 300 m/s using 1.59-mm diameter hardened steel ball projectiles. Targets in a flexural configuration...

... structural problems. Therefore, foreign object damage (FOD) associated with particle impact needs to be considered when ceramic materials are designed for structural applications. In view of this importance, a considerable amount of work on impact damage of brittle materials by sharp particles as well...