| 作成年度 | 2023 年度 |
|---|---|
| 論文名 | Investigation of the Mechanical Degradation of Corroded Weathering Steel Using Digital Image Correction (DIC) Method |
| 論文名（和訳） | デジタル画像補正（DIC）法を用いた腐食耐候性鋼の機械的劣化の調査 |
| 論文副題 | weathering steel, mechanical degradation, surface roughness, DIC method |
| 発表会 | The 15th Taiwan-Japan Workshop on Structural and Bridge Engineering |
| 誌名 | |
| 巻・号・回 | |
| 発表年月日 | 2024/03/28 ～ 2024/03/30 |
| 所属研究室／機関名 | 著者名（英名） |
|---|---|
| iMaRRC | Wint Thandar（Wint Thandar） |
| 抄録 |
|---|
| The purpose of this study is to investigate the mechanical degradation of weathering steel with a naturally simulated rust layer by exposing it in a severe corrosive environment in Okinawa (Japan). Surface roughness of steel caused by corrosion on weathering steel varies with exposure time and rust thickness development. The effect of time-variant roughness on steel surface caused by corrosion on the strength and deformation of corroded weathering steel is identified by using the Digital Image Correction (DIC) method while conducting uniaxial tensile testing. The initiation and propagation of a local crack at the critical pit indicates the loss of load bearing area of steel surface causes the degradation of mechanical properties of steel. Fracture elongations of steel after corrosion at different exposure periods represent the reduction in ductility of weathering steel after corrosion. |
