id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fis-4353	Chahira, Brihmat; Amoura, Nasreddine; Lecheb, Samir; Kebir, Hocine; Ait Chikh, Mohamed Abdessamed; Tablit, Bassima	Crack identification in plates-type structures using natural frequencies coupled with successful history-based adaptive differential evolution algorithm	2023	13	.pdf	application/pdf	5945	372	50	B. Chahira et al, Frattura ed Integrità Strutturale, 66 (2023) 207-219; DOI: 10.3221/IGF-ESIS.66.13 214 Modes Uncracked plate frequencies (Hz) Cracked plate frequencies (Hz) Differences (%) 1 60.39 55.93 -7.39 2 85.62 79.50 -7.15 3 110.25 115.12 4.42 4 140.75 133.12 -5.42 5 170.87 165.00 -3.44 6 182.63 176.25 -3.49 7 200.37 198.75 -0.81 8 250.59 244.87 -2.28 9 274.62 265.12 -3.46 10 282.94 273.00 -3.51 Table 3: Experimental natural frequencies of a clamped cracked and crack-free plate. Modes Experimental frequencies (Hz) Numerical frequencies (Hz) Differences (%) 1 55.93 53.20 -4.88 2 79.50 79.43 -0.09 3 115.12 116.73 1.40 4 133.12 137.44 3.25 5 165.00 166.26 0.76 6 176.25 175.04 -0.69 7 198.75 201.44 1.35 8 244.87 244.73 -0.06 9 265.12 264.24 -0.33 10 273.00 275.13 0.78 Table 4: Numerical and experimental natural frequencies of a cracked plate having a crack length of 120mm inclined by 35°.	cache/fis-4353.pdf	txt/fis-4353.txt