id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fis-213	Askes, Harm; Susmel, Luca	Gradient enriched linear-elastic crack tip stresses to estimate the static strength of cracked engineering ceramics	2013	7	.pdf	application/pdf	3755	198	59	  (13) Eq. (9), which is the starting point of the reasoning summarised above, represents a link between the AM [10] and gradient elasticity as formalised by Aifantis and co-workers [3-5], so that, if the terms of order L4 and higher are ignored, the the l vs. L relationship can explicitly be written as: 2 21 L 8   L 2 2  (14) GRADIENT ENRICHED TIP STRESSES TO ESTIMATE STATIC STRENGTH OF CRACKED CERAMICS n order to check the accuracy of gradient enriched tip stresses in estimating the static strength of cracked engineering ceramics under Mode I static loading a number of experimental results were selected from the technical literature, the mechanical properties of the investigated materials being summarised in Tab 1. 0.05 0.5 0.01 0.1 1 10 100  t h / U T S F2·a/L SiC Si3N4 Al2O3 Sialon Inherent Strength LEFM L=2√2 l GM Figure 2: Accuracy of gradient enriched tip stresses in estimating the transition from the short- to the long-crack regime under Mode I static loading, the mechanical properties of the considered engineering ceramics being summarised in Tab 1.	cache/fis-213.pdf	txt/fis-213.txt