Drop weight tower for crack initiation in fracture mechanics samples
US10107730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2016 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Jul 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0064
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Drop-weight tower (110) for reproducibly initiating a crack in a material sample for fracture mechanics testing comprising a base (120) with a top surface upon which a sample holder (124) is mounted to grip a material sample, an attachment column (140) having a linear rail (142), a carriage (162) attached to the linear rail (142) and a stage (164) is attached to the carriage. The stage (164) includes a vertical rod (184) and a razor-blade holder (178). A weight is slidably mounted to the vertical rod (184). The carriage is used to adjust the height of the stage (164) relative to the material sample. A hammer (180) slides up and down the vertical rod (184) to apply consistent and reproducible force on the razor (178) that then initiates the crack in the material sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.