id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-1285	Ficker, T.	Fractality of Fracture Surfaces	2010	6	.pdf	application/pdf	4446	265	72	Keywords: fractal dimension, fracture surfaces, porous materials, compressive strength. 2.1 Fractal porosity The large class of porous materials possesses at least one common feature, namely, they are composed of grains (particles, globules, etc.) of microscopic size l. The grains are usually arranged fractally with num- ber distribution N(l) and fractal dimension D N(l)	cache/ap-1285.pdf	txt/ap-1285.txt