Estimation of Penetration Depth Using Acceleration Signal Analysis for Underwater Free Fall Cone Penetration Tester
| Autor: | Jung-min Seo, Changjoo Shin, OSoon Kwon, In Sung Jang, Hyoun Kang, Sung Gyu Won |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | 한국해양공학회지, Vol 34, Iss 3, Pp 202-207 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1225-0767 2287-6715 |
| DOI: | 10.26748/KSOE.2019.076 |
| Popis: | A track-type underwater construction robot (URI-R) was developed by the Korea Institute of Ocean Science & Technology. Because URI-R uses tracks to move on the seabed, insufficient ground strength may hinder its movement. For smooth operation of URI-R on the seabed, it is important to determine the geotechnical properties of the seabed.To determine these properties, standard penetration test (SPT), cone penetration test (CPT), and sampling are used on land. However, these tests cannot be applied on the seabed due to a high cost owing to the vessel, crane, sampler, and analysis time. To overcome these problems, a free fall cone penetration tester (FFCPT) is being developed.The FFCPT is a device that acquires the geotechnical properties during impact/penetration/finish phases by free fall in water. Depth information is crucial during soil data acquisition. As the FFCPT cannot measure the penetration depth directly, it is estimated indirectly using acceleration. The estimated penetration depth was verified by results of real tests conducted on land. |
| Databáze: | Directory of Open Access Journals |
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