| 发明名称 | Systems and methods for detecting crack growth | ||
| 摘要 | A system and method for detecting crack propagation in a material test specimen may include color contrasting a surface of a test specimen, acquiring a plurality of photographic images of the specimen during application of a stress load, processing the plurality of images to detect characteristics of pixels that are outside a baseline range of pixel characteristics indicative of a contrast between a crack in the test specimen and the color contrasted surface of the test specimen, and generating an output of a strain energy release rate based on changes in detected crack length over time. | ||
| 申请公布号 | US9528945(B2) | 申请公布日期 | 2016.12.27 |
| 申请号 | US201414472300 | 申请日期 | 2014.08.28 |
| 申请人 | The Boeing Company | 发明人 | Handler Jordan Jerome |
| 分类号 | G01N3/06;G01N21/95;G01N21/25 | 主分类号 | G01N3/06 |
| 代理机构 | Kolisch Hartwell, P.C. | 代理人 | Kolisch Hartwell, P.C. |
| 主权项 | 1. A method of detecting crack propagation in a material test specimen, comprising: color contrasting a surface of a test specimen with the surface color of a background; supporting the test specimen over the background; acquiring a plurality of photographic images of the specimen during application of a stress load; processing the plurality of images to detect characteristics of pixels that are outside a baseline range of pixel characteristics indicative of a contrast between the background revealed through a crack in the test specimen and the color contrasted surface of the test specimen; and generating an output of a strain energy release rate based on changes in detected crack length over time. | ||
| 地址 | Chicago IL US | ||