X-ray stress measurements in the institute of aviation possibilities and examples

• Autorzy: Gadalińska E. , Malicki M.

Identyfikatory

DOI

10.5604/01.3001.0012.4327

• Języki publikacji: EN

Abstrakty

EN

From the point of view of the airplane construction, its fatigue lifetime and exploitation process, the stress states and levels are of crucial importance. The most appropriate experimental methods to determine stress values are diffraction methods with different radiation type employed. These methods allow the determination of the elastic lattice deformation and distortion (effectively the stress state) from the displacement and broadening of the diffraction peak. Diffraction methods are widely known as the experimental methods for determining not only the stress values but also the elastic properties of polycrystalline materials (also of all alloys types used in the aerospace industry). The advantages of diffraction experiments result from their non-destructive character and the possibility to obtain absolute values of stresses in different phases of each type of crystal material (the measurements are performed selectively only for crystallites contributing to the measured diffraction peak, i.e. for the grains having lattice orientations for which the Bragg condition is fulfilled). In the frame of this work, the laboratory possibilities of the Institute of Aviation in this area are presented as well as the exemplary results of stress measurements performed there.

Słowa kluczowe

EN

X-ray diffraction; residual stress measurements; fatigue

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2018
• Tom: Vol. 25, No. 3
• Strony: 159--166
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Gadalińska E.

• Institute of Aviation, Materials and Structures Research Centre Krakowska Av. 110/114, 02-256 Warsaw, Poland tel.: [phone] ext. 319, fax: [phone]

autor

Malicki M.

• Institute of Aviation, Materials and Structures Research Centre Krakowska Av. 110/114, 02-256 Warsaw, Poland tel.: [phone] ext. 319, fax: [phone]

Bibliografia

• [1] Brinksmeier, E., Improvements in X-Rray stress analysis, in: Advances in Surface Treatment, pp. 109-115, London 1986.
• [2] Fitzpatrick, M. E., Fry, A. T., Holdway, P., Kandil, F. A., Shackleton, J., Suominen, L., Determination of residual stresses by X-ray diffraction, Publications: National Physical Laboratory, Teddington 2005.
• [3] Gadalińska, E., Micromechanical properties and stresses in two-phase polycrystalline materials studied using diffraction and self-consistent model, Doctoral Thesis, AGH – University of Science and Technology, Kraków 2018.
• [4] Iadicola, M. A., Gnäupel-Herold, T. H., Effective X-ray elastic constant measurement for in situ stress measurement of biaxially strained AA5754-O, Materials Science and Engineering: A, Vol. 545, pp. 168-175, 2012.
• [5] Noyan, I. C., Determination of the elastic constants of inhomogeneous materials with X-ray diffraction, Materials Science and Engineering, Vol. 75, pp. 95-103, 1985.
• [6] Unterstell, A., 1.4922/1.4923 stainless steel datasheet, http://www.metalcor.de/en/datenblatt/ 70/, access: 2018-07-04.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).