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Thermomechanical cyclic hardening behavior of hastelloy-x. m.s. thesis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bartolotta, P. A. |
| Copyright Year | 1985 |
| Description | Experimental evidence of thermomechanical history dependence on the cyclic hardening behavior of a representative combustor liner material Hastelloy-X is presented, along with a discussion about the relevant concept of thermomechanical path dependence. Based on the experimental results, a discussion is given on the inadequacy of formulating nonisothermal constitutive equations solely on the basis of isothermal testing. Finally, the essence of a mathematical representation of thermoviscoplasticity is presented that qualitatively accounts for the observed hereditary behavior. This is achieved by formulating the scaler evolutionary equation in an established viscoplastic theory to reflect thermomechanical path dependence. Although the necessary nonisothermal tests for further quantifying the thermoviscoplastic model have been identified, such data are not yet available. |
| File Size | 62386390 |
| Page Count | 55 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860007140 |
| Archival Resource Key | ark:/13960/t4jm74w3g |
| Language | English |
| Publisher Date | 1985-11-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Thermodynamics Thermoviscoelasticity Hardening Materials Cyclic Loads Linings Combustion Chambers Hastelloy Trademark Constitutive Equations Thermomechanical Treatment Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Thesis |
