Wyniki wyszukiwania - BazTech

1

Experimental and numerical approach to chosen types of mandibular fractures cured by means of miniplate osteosynthesis

Kromka M., Milewski G.

Acta of Bioengineering and Biomechanics

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2007

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Vol. 9, nr 2

49-54

EN

The paper presents experimental and numerical analyses of two cases of mandibular corpus fractures cured by means of miniplate implantation. In the laboratory tests, strain gauges and electronic speckle pattern interferometry methods were used, while in the numerical simulations finite element analyses were applied. The aim of such a combined approach was to verify a correctness of the numerical model applied with regard to the assumptions and simplifications which had been done when creating FEM for human mandible: healthy, broken and stabilized with miniplate implants.

2

Strength analysis of reinforcement of dental bridges of anterior teeth prostheses

Milewski G., Kromka M., Repeta P.

Zeszyty Naukowe Katedry Mechaniki Stosowanej / Politechnika Śląska

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2006

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z. 26

247-252

EN

Application of strengthening elements in dental bridges for both fixed and removable prostheses essentially extends possibilities of lost teeth reconstruction as well as increases the range of transfered occlusal loadings. The paper presents comparative numerical analysis of the reinforced polymer-based fixed prosthesis used for a reconstruction of the total teeth lack in anterior mandibular part. The strengthening bars of various cross-sections were made of stainless steel, titanic alloy, ceramics and glass composite. The stress distributions in the elements of prostheses as well as the analysis of effort in the mandibular bone structures close to the supporting pillars have been done for the case of bite occlusal loadings.

3

Comparative strength analysis of alternative types of autogenous bone graft methods in mandibular reconstruction

Kromka M., Milewski G.

Zeszyty Naukowe Katedry Mechaniki Stosowanej / Politechnika Śląska

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2006

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z. 26

197-202

EN

The proper osteointegration between transplant and mandibular bones in method of autogenous bone graft, among others, depends on a size of the removed bone part in the mandible as well as on a type of the free bone graft used for reconstruction. In the paper three different types of grafting bone material taken from hip, rib and tibia, for two sizes of the removed part of mandible, have been compared. Titanic macroplate was used as a stabilizing element. The strain and stress fields in both mandibular bones and grafts have been determined for all considered cases. Numerical model of mandible used in the strength analysis was built with the regards to the anatomical features including basic muscle groups of stomatognathic system, mobility of temporal-mandibular joint, volume representing alveodental ligament and alternative isotropic or orthotropic bone material properties.

4

Zabezpieczenie od skutków utraty synchronizmu wzbudzonego turbogeneratora

Wróblewska S., Dytry H., Kromka M.

Automatyka Elektroenergetyczna

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1998

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Nr 1

9-13

PL

W artykule omówiono zagrożenia, jakie stanowi utrata synchronizmu i poślizg biegunów wirnika dla urządzeń elektroenergetycznych bloku. Przedstawiono również kryteria identyfikacji tego nienormalnego stanu pracy oraz wymagania stawiane zabezpieczeniom turbogeneratora. Ponadto opisano rozmaite rozwiązania zabezpieczeń reagujących na poślizg biegunów wirnika generatora. Końcowe wnioski dotyczące stosowania i sposobu działania zabezpieczenia zamykają to zwięzłe opracowanie przeznaczone szczególnie dla pracowników eksploatacji elektrowni.