Development of advanced accessible radar technique for construction and maintenance of civil engineering structure

2016 Fiscal Year Final Research Report

• Project/Area Number: 26282092
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Social systems engineering/Safety system
• Research Institution: Gunma University
• Principal Investigator: Miwa Takashi 群馬大学, 理工学研究科, 准教授 (30313414)
• Co-Investigator(Kenkyū-buntansha): 羽賀 望 群馬大学, 大学院理工学府, 助教 (50638476) ; 小澤 満津雄 群馬大学, 大学院理工学府, 准教授 (80313906)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: レーダ / アンテナ / 前方探査 / 鉄筋腐食 / 加振 / ドップラ変位計

Outline of Final Research Achievements

In the construction and maintenance of infrastructure, it has been required to more accurately measure around the radar. We developed antennas mounted on the bucket of the back-how and on the core drill for concrete in this research. Through the experimental approach, we show that the developed antenna is useful for detection of the forward of the antenna. This technique is expected to play a roll of an automotive radar in concrete or underground. Moreover, we developed a vibro-radar method in order to evaluate the corrosion of re-bar in the concrete. In this technique, the re-bar is forced to vibrate by an excitation coil on the surface. Then, the vibration displacement of the re-bar is measured by a Doppler radar method. Experimental results show that the vibration displacement of the corroded re-bar is 5 times larger than the healthy re-bar.

Free Research Field

計測工学