Results 21 to 30 of about 332,750 (308)

Characterizing the Dynamic Response of a Chassis Frame in a Heavy-Duty Dump Vehicle based on an Improved Stochastic System Identification [PDF]

open access: yes, 2015
This paper presents an online method for the assessment of the dynamic performance of the chassis frame in a heavy-duty dump truck based on a novel stochastic subspace identification (SSI) method. It introduces the use of an average correlation signal as
Chen, Zhi   +3 more
core   +2 more sources

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

Ultrasonically Assisted Hammer-Action Penetrators in Planetary Regolith [PDF]

open access: yes, 2018
This paper describes the effects of combining ultrasonic vibration with hammer-action style penetrators, such as the HP3 probe on the InSight mission. By synchronizing short pulses of vibration with the impact of the hammer, the number of hammer strikes ...
Firstbrook, David   +3 more
core   +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

How was the Hubble sequence 6 Gyrs ago? [PDF]

open access: yes, 2009
The way galaxies assemble their mass to form the well-defined Hubble sequence is amongst the most debated topic in modern cosmology. One difficulty is to link distant galaxies to those at present epoch. We aim at establishing how were the galaxies of the
Delgado-Serrano, R.   +5 more
core   +6 more sources

Premise Selection and External Provers for HOL4 [PDF]

open access: yes, 2015
Learning-assisted automated reasoning has recently gained popularity among the users of Isabelle/HOL, HOL Light, and Mizar. In this paper, we present an add-on to the HOL4 proof assistant and an adaptation of the HOLyHammer system that provides machine ...
Farmer W. M.   +7 more
core   +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

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

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

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