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1

Low cycle fatigue prediction of the aluminium alloy compresor wheel

Brumek J., Strnadel B.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2007

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Vol. 321, z. 89

89-89

EN

This paper is devoted to give a brief review of the mechanism proceeding cracks initiation in the fatigue process in the compressor wheel. Finite element analysis has been used to calculate triaxial stresses. Alternating and mean stresses of each sub cycle where calculated in each direction and Sines’ methodology was used to convert triaxial stress to an equivalent uniaxial stress. Damage caused by each sub cycle found using test bar S-N curve. Total life was found using Miner’s rule.

2

Determination of elastic-plastic properties using reverse FEA of ball indentation test

Brumek J., Strnadel B., Dlouhý I.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2007

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Vol. 321, z. 89

87-87

EN

We proposed an improved technique to determine the plastic properties of material from the load-displacement curve from ball indentation test. The reverse finite element method was used for simulation of indentation test. This technique has been successfully applied on several carbon steel specimens and for all these test materials the reverse analysis results were found to agree with the data from conventional standard test method. This nondestructive assessment of deformation behavior has good potential for the other materials.

3

Vliv velikostí zkušebního tělesa na hodnotu vrubové houževnatosti

Matucha P., Matocha K., Strnadel B.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2004

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z. 78

109-112

4

Vliv rychlosti zatěžování na lomovou houževnatost a na fraktální dimenzi lomu oceli R7T

Chobot K., Dlouhý I., Strnadel B.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2004

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z. 78

49-52

5

Vliv podmínek válečkování na charakter povrchových vrstev sedla železničních náprav

Kohout J., Matušek P., Strnadel B.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2004

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z. 78

99-102

6

Vliv podmínek tvárného porušení konstrukčních ocelí na fraktální dimenzi lomové plochy

Strnadel B.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2003

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z. 76

133-140

7

Vliv mikrostruktury na charakter tvárného porušení Cr-Ni oceli

Chobot K., Dlouhý I., Strnadel B.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2003

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z. 76

35-42

8

Scattering the Cleavage fracture toughness in steels

Strnadel B, Byczański P., Freundlich P.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2000

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z. 63

129-132