The numerical - experimental analysis of ablative laser cleaning nickel - based superalloy

• Autorzy: Kosiuczenko K. , Napadłek W.
• Języki publikacji: EN

Abstrakty

EN

The results of simulation the laser ablation cleaning for the surface of samples made for nickel-based superalloy ŻS6K-WI. this material is use to produce the first-degree blades of aircraft engine turbines. The laboratory investigations were used pulse neodymium laser Nd: YAG and laser ytterbium Nd: Y3Al5O12. In parallel with the experiment was performed numerical simulation of ablation process. The simulation results were used for selection of appropriate laser parameters (duration, pulse form and the course of pulse in time, power density). the short time of the phenomenon of ablation process (similar to 10 ns), the authors have chosen the finite element method (FEM) contained in the LS-Dyna. Since it is known that, the rate of thermal deformation is very large, for modelling the material properties of the material model was used Thermal-Elastic-Plastic. So chosen material model allows the dependence of material parameters (E, alfa, ni, Re, ET, Cp, k) on temperature. Scheme of laser ablation, diagram of laser power density, physical model, identification depth of the ablation, area where the temperature exceeded the melting temperature, in successive moments of loading are presented in the paper.

Słowa kluczowe

EN

superalloy ŻS6K-WI; laser ablation cleaning; numerical simulation MES

• 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: 2012
• Tom: Vol. 19, No. 1
• Strony: 187--190
• Opis fizyczny: Bibliogr. 3 poz., rys.

Twórcy

autor

Kosiuczenko K.

autor

Napadłek W.

• Military University of Technology, Faculty of Mechanical Engineering Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] LS-Dyna user’s manual, Vol. I, Livermore Software Technology Corporation, 2007.
• [2] Kosiuczenko, K., Niezgoda, T., Napad􀃡ek, W., The identification of parameters the laser impulse LSP strengthening of aluminum alloy by the inverse method, Mechanik, 5-6, Warszawa 2008.
• [3] Hsieh, H., Lin, J., Laser inducted vibration during pulsed laser forming, Science Direct Optics & Laser Technology, 36, pp. 431–439, 2004.