Wyniki wyszukiwania - BazTech

1

Processing of Porous NiTi Preforms for NiTi/Mg Composites

Kucharczyk A., Naplocha K., Tomanik M.

Archives of Metallurgy and Materials

|

2019

|

Vol. 64, iss. 2

747--752

EN

NiTi alloys are successfully used in engineering and medical applications because of their properties, such as shape memory effect, superelasticity or mechanical strength. A composite with Mg matrix, due to its vibration damping properties, can be characterized by low weight and good vibration damping properties. In this study, a combination of two techniques was used for successful fabrication of Mg composite reinforced by NiTi alloy preform. The porous preforms synthesized by Self-propagating Hightemperature Synthesis (SHS) from elemental powders were subsequently infiltrated with Mg by squeeze casting. The effects were examined with scanning electron microscope with EDS detector, X-ray diffraction and microindentation. The inspection has shown well-connected matrix and reinforcement; no reaction at the interface and open porosities fully infiltrated by liquid Mg. Moreover, analysis of samples’ fracture has exhibited that crack propagates inside the Mg matrix and there is no detachment of reinforcement.

2

The influence of poly(L-lactide) surface modification by CO2 and excimer lasers on mechanical properties

Tomanik M., Kobielarz M., Antończak A., Filipiak J., Pezowicz C.

Engineering of Biomaterials

|

2016

|

Vol. 19, no. 138 spec. iss.

97

3

Hydrolytic degradation of PLLA and PLGA with surface modified by CO2 laser – preliminary study

Tomanik M., Kobielarz M., Antończak A., Filipiak J., Pezowicz C.

Engineering of Biomaterials

|

2016

|

Vol. 19, no. 138 spec. iss.

96

4

Badania właściwości stukturalnych i mechanicznych tkanki kostnej zmienionej zwyrodnieniowo

Tomanik M., Nikodem A.

Aktualne Problemy Biomechaniki

|

2013

|

z. 7

163--168

PL

Celem badań było określenie właściwości mechanicznych oraz strukturalnych tkanki kostnej gąbczastej pochodzącej z nasad bliższych kości udowych. Materiał badawczy pochodził od pacjentów z chorobą zwyrodnieniową o zróżnicowanym stopniu zaawansowania. Porównując wyniki właściwości strukturalnych i mechanicznych próbek pochodzących z różnych regionów nasady bliższej można stwierdzić większe zmiany modułu Younga, DMA, BV/TV, Tb.Th, Tb.N oraz DA w rejonie tkanki kostnej, która znajduje się bezpośrednio pod degradującą się stawową warstwą tkanki chrzęstnej.

EN

It is common known that the cancellous bone is able to change its structure under the influence of acting forces. The Osteoarthritis (OA), is degenerative joint disease, caused by the breakdown of cartilage and is most common in hips. As OA is progressing the mechanical stress on joint increase, causing a degeneration and deformation of a femur head. Due to changes of mechanical conditions in the joint the structure of bone adapts to new loading forces. The purpose of the study is to determine the mechanical and structural properties of human femoral bone tissue in different stages of OA.