J-integral range to characterize fatigue crack growth rate in notched specimens

• Autorzy: Rozumek D. , Lazzarin P. , Macha E. , Meneghetti G.
• Konferencja: Konferencja mechaniki pękania / sympozjum (X ; 11-14.09.2005 ; Opole-Wisła, Polska)
• Języki publikacji: EN

Abstrakty

EN

The paper deals with fatigue crack propagation from notches in plates made of FeP04 steel and AA 356-T6 aluminium alloy. The tests were performed under different stress ranges by keeping constant the nominal load ratio (R=0.1). The specimens were weakened by nearly-sharp and blunt two-sided notches. The results of the fatigue tests are reanalysed here in terms of J-integral range including the notch influence. It was observed that the blunter notches are, the higher fatigue crack growth rate is.

Słowa kluczowe

EN

fatigue crack; FeP04 steel; AA 356-T6 aluminium alloy

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Mechanika / Politechnika Opolska
• Rocznik: 2005
• Tom: z. 82
• Strony: 179--186
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Rozumek D.

• Technical University of Opole, Poland

autor

Lazzarin P.

• University of Padova, Italy

autor

Macha E.

• Technical University of Opole, Poland

autor

Meneghetti G.

• University of Padova, Italy

Bibliografia

• [1] MACHA E., ROZUMEK D.: Fatigue crack path development in a one-sided restrained bar with a rectangular section and stress concentrator under bending, Proc. Int. Conference on Fatigue Crack Paths (FCP 2003), Parma, Parma (Italy) 2003, pp.60 and on CD-ROM, 8 pages
• [2] ATZORI B., LAZZARIN P. AND MENEGHETTI G.: Fracture mechanics and notch sensitivity, Fatigue and Fracture of Engineering Materials and Structures 26, 2003, pp. 257-267
• [3] JIANG Y., FENG M.: Modelling of fatigue crack propagation, Journal of Engineering materials and Technology 126, 2004, pp. 77-86
• [4] RICE J.R.: A path independent integral and the approximate analysis of strain concentration by notches and cracks, Journal of Applied Mechanics, 35, 1968, pp. 379-386
• [5] LAZZARIN P., TOVO R. and MENEGHETTI G.: Fatigue crack initiation and propagation phases near notches in metals with low notch sensitivity, International Journal of Fatigue 19, 1997, pp. 647-657
• [6] EL HADDAD M.H., TOPPER T.H. and SMITH K.N.: Prediction of non-propagating cracks, Engineering Fracture Mechanics 11, 1979, pp. 573-584
• [7] DOWLING N.E. and BEGLEY J.A.: Fatigue crack growth during gross plasticity and the J-integral, ASTM STP 590, American Society for Testing and Materials, 1976, pp. 82-103
• [8] ROZUMEK D.: The AJ-integral rangę applied for the description of fatigue crack growth rate, Proc. 12lh Int. Conference on Experimental Mechanics (ICEM12), Bari, Italy, 2004, pp.275-276 and CD-ROM, 8 ps