Small punch test of ferritic-martensitic steel P92 at constant deflection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00449791" target="_blank" >RIV/68081723:_____/15:00449791 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Small punch test of ferritic-martensitic steel P92 at constant deflection
Original language description
New application of the Small Punch Test (SPT) [1] can be employed as the stress relaxation testing at elevated temperatures. The disc specimen has to be loaded at a given deflection rate to a specific central deflection that conforms to conditions of themembrane-stretching regime. The deflection of the disc is then held constant and the force relaxes as the elastic strain is replaced with inelastic creep strain. This test at constant deflection can be marked as SPT-CD. The force vs. time response during relaxation can be recalculated to stress vs. time response, differentiated and divided by elastic modulus to obtain the creep rate and finally its dependence on the stress. The process of the disc deformation and the stress relaxation is possible to model using the Finite Element Method (FEM). Two basic SPT setups were already modeled: i) SPT at constant force (SPT-CF), i.e. certain analogy to the creep test [2] and ii) SPT at constant deflection rate (SPT-CDR), i.e. an analogy to tens
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
<a href="/en/project/ED1.1.00%2F02.0068" target="_blank" >ED1.1.00/02.0068: Central european institute of technology</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů