'One-shot' identification of laser intensity in a process of thin metal film heating

• Autorzy: Majchrzak E. , Mochnacki B. , Poteralska J.
• Języki publikacji: EN

Abstrakty

EN

Thermal interactions between thin metal film and external laser pulse are considered. In particular on a basis of the knowledge of surface temperature distribution the laser intensity is estimated. The problem is described by dual-phase-lag model in which two relaxation parameters (relaxation time and thermalization time) are introduced in order to take into account the microscopic thermal interactions. The laser action is taken into account by additional term (source function) supplemented the basic energy equation. In the paper the mathematical model of the thin film heating process is discussed, the inverse problem is formulated and also the example of computations is presented.

Słowa kluczowe

EN

mathematical model; laser intensity; thin metal film; heating process

PL

model matematyczny; intensywność lasera

• Wydawca: Wydawnictwo Politechniki Częstochowskiej
• Czasopismo: Prace Naukowe Instytutu Matematyki i Informatyki Politechniki Częstochowskiej
• Rocznik: 2009
• Tom: Vol. 8, nr 1
• Strony: 131--136
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Majchrzak E.

autor

Mochnacki B.

autor

Poteralska J.

• Silesian University of Technology, Gliwice, Poland

Bibliografia

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• [2] Majchrzak E., Mochnacki B., Suchy J.S., Numerical simulation of thermal processes proceeding in a multi-layered film subjected to ultrafast laser heating, J. of Theoretical and Applied Mechanics 2009, 47, 2, 383-396.
• [3] Chen J.K., Beraun J.E., Numerical study of ultrashort laser pulse interactions with metal films, Numerical Heat Transfer 2001, Part A, 40, 1-20.
• [4] Kleiber M., Parameter sensitivity, J.Wiley & Sons Ltd., Chichester 1997.
• [5] Mendakiewicz J., Application of sensitivity analysis in experiments design, Scientific Research of the Institute of Mathematics and Computer Science, Czestochowa University of Technology 2008, 1(7), 141-148.
• [6] Orlande H.R.B., Ozisik M.N., Inverse analysis for estimating the electron-phonon coupling factor in thin metal films, J.Appl. Phys. 1995, 78, 3, 1843-1849.
• [7] Kurpisz K., Nowak A.J., Inverse Thermal Problems, Computational Mechanics Publications, Southampton-Boston 1995.
• [8] Mochnacki B., Majchrzak E., Szopa R., Suchy J.S., Inverse problems in the thermal theory of foundry, Scientific Research of the Institute of Mathematics and Computer Science 2006, 1(5), 154-179.
• [9] Majchrzak E., Mochnacki B., Identification of thermal properties of the system casting - mould, Materials Science Forum 2007, 539-543, 2491-2496.