Contribute to quantitative identification of casting defects based on computer analysis of X-ray images

• Autorzy: Ignaszak Z. , Popielarski P. , Krawiec K.
• Języki publikacji: EN

Abstrakty

EN

The forecast of structure and properties of casting is based on results of computer simulation of physical processes which are carried out during the casting processes. For the effective using of simulation system it is necessary to validate mathematica-physical models describing process of casting formation and the creation of local discontinues, witch determinate the casting properties. In the paper the proposition for quantitative validation of VP system using solidification casting defects by information sources of II group (methods of NDT) was introduced. It was named the VP/RT validation (virtual prototyping/radiographic testing validation). Nowadays identification of casting defects noticeable on X-ray images bases on comparison of X-ray image of casting with relates to the ASTM. The results of this comparison are often not conclusive because based on operator's subjective assessment. In the paper the system of quantitative identification of iron casting defects on X-ray images and classification this defects to ASTM class is presented. The methods of pattern recognition and machine learning were applied.

Słowa kluczowe

EN

validation of simulation codes; X-ray testing; casting defects; image recognition

PL

wady odlewów; zdjęcia rentgenowskie; analiza komputerowa

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2007
• Tom: Vol. 7, iss. 4
• Strony: 89--94
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Ignaszak Z.

autor

Popielarski P.

autor

Krawiec K.

• Poznań University of Technology, Department of Foundry, Piotrowo St 3, 61-138 Poznań, Poland,

Bibliografia

• [1] Z. Ignaszak, Virtual Prototyping In foundry. Material databases and validation., Monografia. W-ctwo Pol. Pozn., Poznań 2002 (in Polish).
• [2] Z. Ignaszak, P. Popielarski, Identification of basic substitute termophysical coefficients of mould sand in the dependence on casing wall thickness. Archiwum Odlewnictwa, rok 2006, rocznik 6, nr 22, s224-231, (in Polish).
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• [4] P. Popielarski, Thermophysical parameters of the mould in modeling and simulation of foundry processes. Praca doktorska Politechnika Poznańska, Poznań 2004.. (in Polish).
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• [8] Z.Ignaszak, B.Beszterda, J.Ciesiolka Problem of local discontinuities in ductile iron castings. virtual prognosis and NDT validation. Proceedings of the Fourth International Conference on Mathematical Modeling and Computer Simulations of Materials Technologies, 11-15.09.2006 Ariel (Israel)
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