| タイトル | Reduction of Thermal Residual Stresses in Advanced Metallic Composites Based upon a Compensating/Compliant Layer Concept |
| 著者（英） | Arya, V. K.; Melis, M. E.; Arnold, S. M. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1992-01-01 |
| 言語 | eng |
| 内容記述 | A detailed parametric study is carried out to investigate the viability of the recently proposed compensating/compliant layer concept (i.e., the insertion of an interface material between SiC fiber and metal matrix to reduce or eliminate the residual stress buildup during cooling of the composite). The study uses a finite-element concentric cylinder model with generalized plane strain end conditions and free boundary conditions, assuming the SiC fiber to be isotropic and linear elastic and the compliant layer cylinder and matrix (Ti3Al + Nb) cylinder to be isotropic and bilinear elastic-plastic. Results show that a compensating/compliant layer acts to reduce in-plane residual stresses within the fiber and the matrix and, therefore, reduces radial cracking. However, this decrease in in-plane stresses is accompanied by an increase of longitudinal stress, which may initiate longitudinal cracking. |
| NASA分類 | COMPOSITE MATERIALS |
| レポートNO | 92A47106
E-5720-1 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/268521 |
|
