id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fis-116	Atzori, B.; Meneghetti, G.; Ricotta, M.	Analysis of the fatigue strength under two load levels of a stainless steel based on energy dissipation	2013	8	.pdf	application/pdf	3502	134	56	To investigate the material fatigue behaviour, constant amplitude fatigue tests were carried out up to the specimen failure. 1.E+08 Q [ kJ /( m 3 cy cl e) ] N. cycles R=-1 k=2.25 QA,50%=87 kJ/(m 3 cycle) TQ=1.92 TN,Q=4.34 10% 90% 50% broken run-out broken stair case procedure 300 200 104 105 106 107 108 N. cycles  a [ M P a] 10% 90% 140 Open symbols: first block of cycles Filled symbols: second block of cycles First load level: a=230 MPa Second load level: a=190 MPa specimen 1 specimen 2 specimen 3 specimen 4 10 100 1000 10000 specimen 1 specimen 2 specimen 3 specimen 4 N. cycles Q value measured at constant amplitude stress  a = 190 MPa on undamaged specimens Open symbols: first block of cycles Filled symbols: second block of cycles First load level:  a =230 MPa Second load level:  a =190 MPa Q [ kJ /( m 3 c yc le ) 104 105 106 107 108 W http://www.gruppofrattura.it http://dx.medra.org/10.3221/IGF-ESIS.17.02&auth=true B. Atzori et alii, Frattura ed Integrità Strutturale, 17 (2011) 15-22; DOI: 10.3221/IGF-ESIS.17.02 21 block of cycles were definitely higher than those observed during constant amplitude fatigue tests at the same stress level on the undamaged material.	cache/fis-116.pdf	txt/fis-116.txt