Browsing by Author "Maj, Maria"
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Item type:Article, Access status: Open Access , Al 6082 and Al 7075 alloys under the modified low-cycle fatigue test(2016) Maj, Maria; Piekło, JarosławThis paper discusses the possibility of assessing the quality of materials in terms of their mechanical properties as determined by a modified low-cycle fatigue test applied in these studies. The developed computer program adapted to the needs of an MTS universal testing machine is described, as are the details of an algorithm used by this program. The compatibility of test results obtained by the two methods (i.e., the standard low-cycle fatigue test [LCF] and its modified original version [MLCF]) has been demonstrated on the samples of selected non-ferrous metals alloys.Item type:Article, Access status: Open Access , Allowable strain as an indicator of fatigue life(2011) Maj, MariaFatigue life, allowable strain and different data on the fatigue resistance of metals and alloys are of great importance for the designer. Knowledge of this subject is very important, given the complicated nature of its impact on many factors, starting with the specific properties of different alloys and in the conditions of their operation ending. This is the reason why, in many cases, the aforementioned complex nature of the effect may remain unknown, which can result in too high values of the safety factors adopted in calculations and, conseąuently, in excessive enlargement of the weight of individual parts of the machinery and equipment, especially as regards the cast elements. In this publication to evaluate the effort (fatigue life), the equivalent strain calculated by the aforementioned method directly from the results of the strain measurements was compared with the permissible strain limit, determined from the results of an MLCF fatigue test. Detailed analysis of the obtained results enables us to claim that permissible strain limit can be regarded as an indicator of the fatigue life.Item type:Thesis, Access status: Restricted , Aspekty technologiczne wzbogacania rud miedzi w kopalni Sierra Gorda SCM w Chile(Data obrony: 2016-01-25) Kowalik, Patrycja
Wydział OdlewnictwaItem type:Article, Access status: Open Access , Monitorowanie zmian naprężeń w żeliwnych tubingach metodą elastooptyczną(Wydawnictwa AGH, 2005) Skopiak, Lech; Stachurski, Wacław; Maj, Maria; Piekło, JarosławIn the article the problem of the measurement and determination of the stresses existing in the tubbing lining of the shaft was raised. The investigations were carried out in the P-III and P-V shafts conditions in O/ZG 'Polkowice-Sieroszowice' (KGHM Polska Miedź SA - KGHM Polish Copper in Lubin). Rock mass movements, created by deposit exploitation and dehydration of the water-bearing layers, result in occurring of high forces affecting the shaft lining, especially in picotage tubbing area. It, more often, results in cracking of those and in consequence of that fact causes the partial loss of the load capacity and leakproofness in the sensitive places of the shaft. In connection with that the frequent monitoring of stress changes in chosen picotage rings is necessary. This article presents the investigation method depending on numerical determination of dangerous areas of stress concentration as well as using the photo-elastic strain measurement to periodical observation of those.Item type:Thesis, Access status: Restricted , Problemy związane z usuwaniem nadlewów(Data obrony: 2010-06-08) Komperda, Grzegorz
Wydział OdlewnictwaItem type:Thesis, Access status: Restricted , Prognozowanie właściwości odlewów ze stopów metali nieżelaznych na podstawie wyników wybranych metod badawczych.(Data obrony: 2019-09-27) Dunikowski, Dawid
Wydział OdlewnictwaItem type:Patent, Access status: Open Access , Wlewnica hutnicza opis patentowy nr 158282(Urząd Patentowy Rzeczypospolitej Polskiej, 1992-08-31) Stachurski, Wacław; Dańko, Józef; Maj, Maria; Urbanik, Eugeniusz; Salwa, Jerzy; Chudoba, Szczepan; Rybka, Tadeusz; Boniecki, Romuald; Akademia Górniczo-Hutnicza im. Stanisława Staszica (Kraków)Item type:Thesis, Access status: Restricted , Wpływ kształtu wydzieleń grafitu w żeliwie ferrytycznym niestopowym na jego odporność na zmęczenie cieplne(Data obrony: 2014-07-15) Kudala, Kamila Dorota
Wydział OdlewnictwaItem type:Thesis, Access status: Restricted , Wpływ niewielkich ilości dodatków bizmutu i cyny na odporność na zmęczenie cieplne żeliwa szarego(Data obrony: 2013-02-01) Kudala, Kamila Dorota
Wydział OdlewnictwaItem type:Thesis, Access status: Restricted , Wpływ pierwiastków desferoidyzujących na strukturę i właściwości żeliwa sferoidalnego wytwarzanego w Odlewni Żeliwa "ŚREM" S.A.(Data obrony: 2010-07-21) Kołakowski, Jakub
Wydział OdlewnictwaItem type:Thesis, Access status: Restricted , Wpływ powłoki ochronnej na grubość warstwy odwęglonej wybranych gatunków staliwa(Data obrony: 2020-05-26) Tokarski, Grzegorz
Wydział OdlewnictwaItem type:Thesis, Access status: Restricted , Zastosowanie techniki ultradźwiękowej do wykrywania wad wewnętrznych w wybranych odlewach(Data obrony: 2016-10-27) Kosman, Jakub
Wydział Odlewnictwa