. "Materials Characterization" . "\u0160umbera, Ji\u0159\u00ED" . . "9"^^ . "Siegl, Jan" . "RIV/68407700:21340/06:04121734!RIV07-MSM-21340___" . "\u0160i\u0161ka, Filip" . "5"^^ . "56" . "464833" . "1044-5803" . . . "Z(MSM6840770021)" . "The conventional definition of fatigue crack growth rate (CGR) is shown to be fractographicly confusing in cases of different variable cycle loadings. A new concept of reference crack growth rate (RCGR) is proposed to cover all fatigue cracks regardless of the type of loading. RCGR may be estimated directly from images of fracture surfaces by means of the methods of textural fractography. Physical interpretation is suggested on the basis of cycle-by-cycle crack growth description. Both approaches and the conventional treatment are compared in application—quantitative fractography of three specimens from aluminium alloy loaded by constant cycle, constant cycle with periodic overloading, and a random block, respectively. Common morphologic features of all fracture surfaces are found that are closely related to RCGR"@en . . . . "[89B3F4BD6181]" . "An Unifying Concept for Fatigue: The Reference Crack Growth Rate" . "Sjednocuj\u00EDc\u00ED koncepce pro \u00FAnavu: referen\u010Dn\u00ED rychlost \u0161\u00ED\u0159en\u00ED trhliny"@cs . . . "257;265" . "An Unifying Concept for Fatigue: The Reference Crack Growth Rate" . "The conventional definition of fatigue crack growth rate (CGR) is shown to be fractographicly confusing in cases of different variable cycle loadings. A new concept of reference crack growth rate (RCGR) is proposed to cover all fatigue cracks regardless of the type of loading. RCGR may be estimated directly from images of fracture surfaces by means of the methods of textural fractography. Physical interpretation is suggested on the basis of cycle-by-cycle crack growth description. Both approaches and the conventional treatment are compared in application—quantitative fractography of three specimens from aluminium alloy loaded by constant cycle, constant cycle with periodic overloading, and a random block, respectively. Common morphologic features of all fracture surfaces are found that are closely related to RCGR" . "4-5" . . "21340" . "NL - Nizozemsko" . "Je uk\u00E1z\u00E1no, \u017Ee konven\u010Dn\u00ED definice rychlosti \u0161\u00ED\u0159en\u00ED trhliny (CGR) je v p\u0159\u00EDpadech zat\u011B\u017Eov\u00E1n\u00ED prom\u011Bnliv\u00FDm cyklem nejednozna\u010Dn\u00E1. Nov\u00E1 koncepce referen\u010Dn\u00ED rychlosti \u0161\u00ED\u0159en\u00ED trhliny (RCGR) sjednocuje popis r\u016Fstu trhliny p\u0159i zat\u011B\u017Eov\u00E1n\u00ED r\u016Fzn\u00FDmi sekvencemi prom\u011Bnliv\u00FDch z\u00E1t\u011B\u017En\u00FDch cykl\u016F. Metodami texturn\u00ED fraktografie m\u016F\u017Ee b\u00FDt referen\u010Dn\u00ED rychlost odhadov\u00E1na p\u0159\u00EDmo z obraz\u016F lomov\u00FDch ploch. Je navr\u017Eena i fyzik\u00E1ln\u00ED interpretace zalo\u017Een\u00E1 na popisu r\u016Fstu trhliny cykl po cyklu. Oba p\u0159\u00EDstupy spolu s konven\u010Dn\u00EDm \u0159e\u0161en\u00EDm jsou porovn\u00E1ny v aplikaci na t\u0159i vzorky z hlin\u00EDkov\u00E9 slitiny zat\u011B\u017Eovan\u00E9 konstantn\u00EDm cyklem, konstantn\u00EDm cyklem s periodick\u00FDm p\u0159et\u00ED\u017Een\u00EDm a n\u00E1hodn\u00FDm blokem. Z\u00E1rove\u0148 jsou v morfologii povrchu lom\u016F nalezeny spole\u010Dn\u00E9 znaky, kter\u00E9 s referen\u010Dn\u00ED rychlost\u00ED koreluj\u00ED."@cs . . . "fatigue; fractography; reconstitution of crack growth; variable cycle loading"@en . "Nedbal, Ivan" . . . . "Lauschmann, Hynek" . "An Unifying Concept for Fatigue: The Reference Crack Growth Rate"@en . "5"^^ . "Sjednocuj\u00EDc\u00ED koncepce pro \u00FAnavu: referen\u010Dn\u00ED rychlost \u0161\u00ED\u0159en\u00ED trhliny"@cs . . . . "An Unifying Concept for Fatigue: The Reference Crack Growth Rate"@en . "RIV/68407700:21340/06:04121734" . . .