Results 11 to 20 of about 145,679 (305)

Experimental study on dynamic response of hammer in underwater tube dynamic compaction stone column

open access: yesYantu gongcheng xuebao, 2023
A series of model tests on underwater tube dynamic compaction gravel pile are conducted. The effects of hammer shape, tamping energy, single filling amount and soil strength on the installation and performance of the stone column are studied. The changes
WANG Xin 1, REN Yuxiao 1, 2, GUO Wei 1, 2, XU Hao 1, KANG Yifei 1
doaj   +1 more source

Plastic Response and Failure of the Cruciform Structure under In-Plane Load

open access: yesJournal of Marine Science and Engineering, 2023
In this study, a common cruciform structure in ship hulls was designed and experimented with in order to analyze its deformation characteristics under planar collision and quasi-static loading.
Xiufei Wang   +3 more
doaj   +1 more source

Hammer impact test applied for fouling detection in pipelines [PDF]

open access: yesSba: Controle & Automação Sociedade Brasileira de Automatica, 2011
The fouling detection in duct systems is a persistent problem and remains a relevant demand for the chemical, oil, food and pharmaceutical industries. The fouling is a deposition process of heavy organic and other dissolved solid materials in the transported fluids or suspensions onto inner wall surfaces in fluid transport systems.
Silva, Jaidilson Jó da   +3 more
openaire   +3 more sources

Experimental Characterization of the Torsional Damping in CFRP Disks by Impact Hammer Modal Testing [PDF]

open access: yesPolymers, 2020
Composite materials are widely used for their peculiar combination of excellent structural, mechanical, and damping properties. This work presents an experimental study on the dissipation properties of disk-shaped composite specimens exploiting vibration tests.
Cosco F.   +4 more
openaire   +2 more sources

Simulation Methods for MEMS S&A Devices for 2D Fuze Overload Loading

open access: yesMicromachines, 2023
An experimental testing system for the two-dimensional (2D) fuze overload loading process was designed to address the loading issues of recoil overload and centrifugal overload in fuze safety and arming (S&A) device.
Zhibo Wu   +5 more
doaj   +1 more source

Experimental investigation of torsional vibration isolation using Magneto Rheological Elastomer

open access: yesMATEC Web of Conferences, 2018
Rotating systems suffer from lateral and torsional vibrations which have detrimental effect on the roto-dynamic performance. Many available technologies such as vibration isolators and vibration absorbers deal with the torsional vibrations to a certain ...
Praveen Shenoy K   +3 more
doaj   +2 more sources

Response of a Tensegrity Simplex in Experimental Tests of a Modal Hammer at Different Self-Stress Levels

open access: yesApplied Sciences, 2020
The natural frequencies and eigenmodes of the tensegrity simplex are determined experimentally in impact hammer tests. To study an effect of prestressing, the tests are carried out on a physical model 1.2 m high and 0.5 m diameter with build-in ...
Leszek Małyszko, Andrzej Rutkiewicz
doaj   +1 more source

Experiment and Simulation Study on the Dynamic Response of RC Slab under Impact Loading

open access: yesShock and Vibration, 2021
Reinforced concrete (RC) slab is an important component in civil construction and protection engineering, and its dynamic response under impact loading is a complex mechanical problem, especially for two or multiple continuous impact loads. In this paper,
Yue Wang   +4 more
doaj   +1 more source

Automated soil hardness testing machine [PDF]

open access: yes, 2007
This paper describes the design and performance of a mechatronic system for controlling a standard drop-hammer mechanism that is commonly used in performing outdoor soil or ground hardness tests. A low-cost microcontroller is used to control a hydraulic
Cubero, Samuel N.   +1 more
core   +2 more sources

The use of titanium alloys for details of downhole hammers [PDF]

open access: yes, 2016
The influence of cementation technology of titanium alloy Ti-Al-Mn on its wear resistance is studied. It is established that after lubrication a friction pair with mineral oil the wear resistance of the cemented titanium alloy is comparable to wear ...
Alekseev, S. E.   +4 more
core   +1 more source

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