Investigation into Damaged Gear of Off-Road Motorcycles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F20%3A43960565" target="_blank" >RIV/49777513:23210/20:43960565 - isvavai.cz</a>
Result on the web
<a href="https://journalmt.com/pdfs/mft/2020/04/15.pdf" target="_blank" >https://journalmt.com/pdfs/mft/2020/04/15.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21062/mft.2020.076" target="_blank" >10.21062/mft.2020.076</a>
Alternative languages
Result language
angličtina
Original language name
Investigation into Damaged Gear of Off-Road Motorcycles
Original language description
If failure occurs in gear wheels in a racer motorcycle gearbox, the possible causes are manifold: inadequate material, improper care (poor lubrication, incorrect assembly) or inadequate thermochemical treatment procedure. This investigation focused on spur wheels of chromium-nickel Czech Standard (ČSN) 16720 steel containing 0.18 % C, 0.4 % Mn, 1.5 % Cr, 4.25 % Ni and 1 % W. The steel had been quenched to 60-62 HRC and the case hardening depth was 0.8 mm. The client requested that these wheels have a life of 100 hours. The failure occurred while the wheels were in operation. The fracture surfaces in the wheels were examined in a scanning electron microscope (SEM). The fracture surfaces were prominent in the failure locations. EDS point analysis in the SEM revealed spots with higher chromium levels on the fracture surfaces. The average size of these spots was several dozen micrometres. The spots were suspected to have caused or contributed to the failure. A hardness profile across one tooth was measured using a microhardness tester. In addition, the thickness of the carburized layer was determined. Quality of the surface was assessed using macrophoto-graphs taken with a low-power stereomicroscope. In addition, metallographic sections were prepared and observed in a scanning electron microscope (SEM) and light microscope.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/LO1502" target="_blank" >LO1502: Development of Regional Technological Institute</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Manufacturing Technology
ISSN
1213-2489
e-ISSN
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Volume of the periodical
20
Issue of the periodical within the volume
4
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
6
Pages from-to
417-422
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85098693350