Two-layer structure composite material for detecting cracks
US6240786A · kind A · utility
2Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1996 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Aug 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0629
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A two-layer structure composite material, by which it is possible to easily detect the occurrence of the cracks occurred in the structural material and to predict the possible destruction of the structural material before it actually occurs. To a structural material, a voltage generating material consisting of a ferroelectric material, a pyroelectric material or a piezoelectric material, is bonded to produce a two-layer structure material, and an electrode is provided for detecting voltage, which is generated owing to impact force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.