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| Description
| - Estimation of structures life and ensure their safety and integrity is an essential part of the design of equipment for transport, engineering and other industries. Usually, fatal accident occurs often under varying loads without causing changes shape. Application of fracture mechanics and testing is possible to describe the propagation of cracks but the kinetics of damage in the early stages has not yet been expressed. The paper deals with identifying the causes of surface failure of a shaft made of material 42CrMoS4. On the basis of microstructural analysis completed by hardness testing, the occurrence of undesirable phases, such as non-metallic inclusions in the structure of the shaft, can be demonstrated. In the presence of various heterogeneous phases in the material structure, plucking of particles can occur during chip machining which leads to surface damage. In the conclusion, the authors recommend checking the starting material, which can eliminate problems that cause the degradation of the surface of the shaft. The failure of the surface causes the notch effect which initiates further failures of the material. Using highly sensitive methods for observing the surface such as scanning electron mikroskopy etc., unique data on mechanism of crack initiation were obtained. The authors present selected partial results of longitudinal studies that deal with failure mechanisms and surface materials and the formation of cracks.
- Estimation of structures life and ensure their safety and integrity is an essential part of the design of equipment for transport, engineering and other industries. Usually, fatal accident occurs often under varying loads without causing changes shape. Application of fracture mechanics and testing is possible to describe the propagation of cracks but the kinetics of damage in the early stages has not yet been expressed. The paper deals with identifying the causes of surface failure of a shaft made of material 42CrMoS4. On the basis of microstructural analysis completed by hardness testing, the occurrence of undesirable phases, such as non-metallic inclusions in the structure of the shaft, can be demonstrated. In the presence of various heterogeneous phases in the material structure, plucking of particles can occur during chip machining which leads to surface damage. In the conclusion, the authors recommend checking the starting material, which can eliminate problems that cause the degradation of the surface of the shaft. The failure of the surface causes the notch effect which initiates further failures of the material. Using highly sensitive methods for observing the surface such as scanning electron mikroskopy etc., unique data on mechanism of crack initiation were obtained. The authors present selected partial results of longitudinal studies that deal with failure mechanisms and surface materials and the formation of cracks. (en)
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| Title
| - Degradation of the Shaft Surface During Machninig Technology
- Degradation of the Shaft Surface During Machninig Technology (en)
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| skos:prefLabel
| - Degradation of the Shaft Surface During Machninig Technology
- Degradation of the Shaft Surface During Machninig Technology (en)
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| skos:notation
| - RIV/68407700:21220/14:00225289!RIV15-MSM-21220___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21220/14:00225289
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - chip machining; surface defects; non-metallic inclusions; microstructure; hardness; cracks (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Proceedings in Manufacturing Systems
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Pešlová, Františka
- Hajduchová, L.
- Stodola, J.
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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