| タイトル | Multiaxial and thermomechanical fatigue considerations in damage tolerant design |
| 本文（外部サイト） | http://hdl.handle.net/2060/19850018653 |
| 著者（英） | Bill, R. C.; Leese, G. E. |
| 著者所属（英） | Army Research and Technology Labs.|NASA Lewis Research Center |
| 発行日 | 1985-01-01 |
| 言語 | eng |
| 内容記述 | In considering damage tolerant design concepts for gas turbine hot section components, several challenging concerns arise: Complex multiaxial loading situations are encountered; Thermomechanical fatigue loading involving very wide temperature ranges is imposed on components; Some hot section materials are extremely anisotropic; and coatings and environmental interactions play an important role in crack propagation. The effects of multiaxiality and thermomechanical fatigue are considered from the standpoint of their impact on damage tolerant design concepts. Recently obtained research results as well as results from the open literature are examined and their implications for damage tolerant design are discussed. Three important needs required to advance analytical capabilities in support of damage tolerant design become readily apparent: (1) a theoretical basis to account for the effect of nonproportional loading (mechanical and mechanical/thermal); (2) the development of practical crack growth parameters that are applicable to thermomechanical fatigue situations; and (3) the development of crack growth models that address multiple crack failures. |
| NASA分類 | METALLIC MATERIALS |
| レポートNO | 85N26964
NAS 1.15:87022
NASA-TM-87022
USAAVSCOM-TR-85-C-5
E-2514
AD-A157112 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/156385 |
