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1 de jun. de 2020 · Free Fall Penetrometer (FFP) testing consist of a torpedo-shaped body freefalling into a soil target. The use of this type of device is becoming popular for the characterization of shallow sediments in near-shore and off-shore environments because it is a fast, versatile, and non-expensive test capable of recording acceleration and ...
15 de jul. de 2023 · A free-fall cone penetrometer (FFcP) and an instrumented free-fall sphere (IFFS) were developed for offshore SI. •. Their field performance in measuring the shear strength of soft sediments was compared. •. The FFcP has higher embedment potential than the IFFS, but IFFS has a simpler interpretation. Abstract.
15 de feb. de 2024 · To perform in-situ testing of deep-sea sediment undrained shear strength, a novel free-fall penetrometer has been developed. This penetrometer is released from above the seabed and penetrates the sediments under gravity, resulting in intense interaction with the sediment.
12 de mar. de 2024 · Underwater free fall penetrometers (FFP) are increasingly used in nearshore and offshore geotechnical site investigations [4, 55, 83, 103, 104]. In recent decades, a variety of FFPs with different sizes, shapes, and instrumentation have been developed and tested in the field and laboratory [ 46 , 97 ].
Abstract. This paper presents the results of a series of laboratory model free-falling penetrometer (FFP) tests in kaolin clay. A thin-shafted FFP has been allowed to free fall and has also been pushed at a relatively slow constant rate into clay beds.
Free Fall Penetrometer (FFP) tests provide an efficient way to determine the penetration resistance at shallow depths in sandy soils, and are being used increasingly in geotechnical, geomorphological and coastal engineering applications.
Numerical modeling of free-falling spherical penetrometer–clay–water interactions. Yaotian Gu1,2 • Guo Hui Lei1 • Xiaogang Qin3,4. Received: 26 July 2023/Accepted: 3 February 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024. Abstract.
