Multimaterial fully isotropic laminates and multimaterial quasi-homogeneous anisotropic laminates
US5532040A · kind A · utility
Inventors
Key dates
| Filing date | Apr 15, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Apr 15, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention discovers the layup of PA1 i. a multimaterial fully isotropic laminate that exhibits a concomitant stiffness isotropy in extension, shear, bending, and twisting; and PA1 ii. a multimaterial quasi-homogeneous anisotropic laminate that has identical stiffness anisotropy in extension and bending as well as in shear and twisting. In addition, layups of the multimaterial fully isotropic laminate lead to a substantially new category of the single-material fully isotropic laminate. Although these laminate layups have distinctive applications as load-carrying structures, the approaches and models that generate these layups are closely related.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.