In-situ scanning electron microscope study of thermo-mechanical fatigue crack behavior

• Autorzy: Jacobsson L. , Persson C. , Melin S.
• Konferencja: Konferencja mechaniki pekania / sympozjum (X ; 11-14.09.2005 ; Opole-Wisła, Polska)
• Języki publikacji: EN

Abstrakty

EN

An experimental technique to analyze images of fatigue cracks taken in-situ in an environmental scanning electron microscope is described. This technique finds the same spot on the surface of the material in different images and generates a displacement fields that can give information on for example crack opening displacement and the shape of the crack close to the crack tip. The test specimen material used is a typical gas turbine material Inconel 718 and low cycle fatigue crack propagation tests at room temperature are performed.

Słowa kluczowe

EN

fatigue crack; scanning electron microscope

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Mechanika / Politechnika Opolska
• Rocznik: 2005
• Tom: z. 82
• Strony: 115--122
• Opis fizyczny: Bibliogr. 5 poz., rys., wykr.

Twórcy

autor

Jacobsson L.

• Lund University, Sweden

autor

Persson C.

• Lund University, Sweden

autor

Melin S.

• Lund University, Sweden

Bibliografia

• [1] ELBER W: Fatigue crack closure under cyclic tension, Eng. Frac. Mech, 2, 1970, 37-45
• [2] DAVIDSON, LANKFORD: Fatigue crack growth in metals and alloys: mechanisms and micromechanics, Int Mat. Reviews, vol.37, no. 2, 45-76
• [3] McCLUNG, DAVIDSON: Near-tip and remote characterization plasticity-induced fatigue crack closure, ASTM STP 1343, 1999, pp. 127
• [4] ANDERSSON H., PERSSON C: In-situ study of fatigue crack behavior in IN718, Int. J. Fatigue 26, 2004, pp. 211-219
• [5] ANDERSSON M., PERSSON C, MOLIN S.: Experimental and numerical investigation of crack closure measurements with electrical potential technique.