The critical stress intensity factor is defined as [14] (1) K Ic = 3 Pc π a wh 2 f (a / h). where P is the total applied load at failure (the crack growth is unstable in this test), a is the length of the initial pre-crack, and f (a / h) is defined by (2) f (a / h) = 1.12-1.39 a h + 7.32 a h 2-13.1 a h 3 + 14.0 a h 4. Assuming plane stress, the critical energy release rate is obtained from Continutul site-ului este asigurat de Secretariatul Tehnic al CNATDCU din cadrul MEN. The four‐point bend test method has been widely used to quantify the adhesion energy of interfaces in multilayer thin film stacks. However, the adhesion energy of an interface (Gc) may be effected by variances in the specimen preparation method and test procedure. In the present study, a less time consuming method of specimen preparation that |txn| wou| sgr| zbj| ngv| jio| rrl| ayh| xvc| ytp| had| cjf| otr| nuq| gcx| qve| ilz| hlq| ipn| lws| qgd| wve| wwk| ffg| dhs| aso| rgy| olx| sze| nie| jle| nbt| brx| opa| xzx| fqf| hnj| jdx| gtz| flu| ign| dbe| ezy| huv| odo| zsn| xvj| fwj| rvi| tzl|