Results 21 to 30 of about 33,613 (263)

Calculation Method and Prediction Simulation of Transient Flow in Viscoelastic Pipeline [PDF]

open access: yes长江科学院院报
[Objective] The water hammer pressure in pipeline systems is a key factor that endangers the safe and stable operation of the system. Especially for the viscoelastic pipes, their time-dependent mechanical behavior makes the analysis and calculation of ...
ZHANG Xiao-ying, LEI Ling-tong, WANG Yi-song, WANG Chao
doaj   +1 more source

Experimental modal analysis for the plate structures with roving inertial shaker method approach

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
In this article, a new roving inertial shaker method approach, using an inertial shaker, is presented to obtain a steel plate’s modal parameters with bolt connections on four sides.
Erdi Gülbahçe, Mehmet Çelik
doaj   +1 more source

Testing Hammer and Stanton's Reengineering Success Diagnostic

open access: yesAustralasian Journal of Information Systems, 2000
Business Process Reengineering (BPR) is no longer referenced in academic literature with the regularity that it was in the heady days of the mid-nineties but it is still in use in Australian organisations. We are also changing processes radically as new software is implemented or new electronic markets are embraced and the lessons of reengineering can ...
Felicity Murphy   +2 more
openaire   +3 more sources

Gas reverse circulation drilling technology for large-diameter DTH hammer

open access: yesMeikuang Anquan, 2023
Large diameter DTH hammer is a drilling tool which has been proved by a lot of engineering practice and can improve the construction efficiency of large diameter drilling on mine surface. However, after drilling into the aquifer, the penetration rate of
ZHAO Jiangpeng
doaj   +1 more source

Experimental Research on the Formation of the Third Body on the Friction Surface of Coal Cake Tamper Hammer Lifting Mechanism

open access: yesMachines, 2023
A tamping machine is the key equipment of large coking coal cake forming in the steelmaking industry, where the loose coal is compacted into a coal cake by the reciprocating movement of its tamping hammer.
Lin Huang   +4 more
doaj   +1 more source

Impact performance optimization of a YDC valve-type double action hydraulic hammer

open access: yesNatural Gas Industry B, 2018
A YDC type hydraulic hammer is a new valve-type double action hydraulic hammer suitable for oil and gas well drilling. It is hard to find out the optimal matching relationship among various factors based on experience and experiments, for the matching ...
Xueqin Huang   +3 more
doaj   +1 more source

RELAP5 application for water hammer analysis in different thermal-hydraulic systems

open access: yesInternational Journal of Thermofluids, 2022
The water hammer phenomenon investigations employing RELAP5 code with one-dimensional two-fluid six-equation models of water and steam flow were performed and the main results shared in this paper.
Algirdas Kaliatka   +3 more
doaj   +1 more source

Design, Fabrication and Testing of Hammer Thresher

open access: yesAsian Journal of Applied Science and Engineering, 2020
Mini combine harvester needs a thresher that paddy and straw inserted into the thresher room. We design Hammer thresher as a part of the mini combine harvester. The research seeks to make a motorized rice thresher that paddy and straw are inserted into the thresher room.
Tamrin Ajis, Budianto Lanya
openaire   +1 more source

Analysis and Structural Optimization Test on the Collision Mechanical Model of Blade Jun-Cao Grinding Hammer

open access: yesAgriculture
Aiming at the problems found in grinding Jun-Cao, such as poor grinding effect and high grinding power of mill, this study proposes a blade Jun-Cao grinding hammer based on the traditional hammer mill.
Shuhe Zheng, Chongcheng Chen, Yuming Guo
doaj   +1 more source

Analysis of fracture energy in drop weight tear testing of API X65 gas pipeline steel

open access: yesJournal of Pipeline Science and Engineering, 2021
In this research, the effect of low velocity impact (LVI) on different components of fracture energy of API X65 gas pipeline steel is investigated using drop weight tear test (DWTT) specimens.
E. Fathi, S.H. Hashemi
doaj   +1 more source

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