Results 271 to 280 of about 1,504,335 (301)
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Maximizing Drill Rates with Real-Time Surveillance of Mechanical Specific Energy
SPE/IADC Drilling Conference, 2005Abstract The concept of Mechanical Specific Energy (MSE) has been used effectively in lab environments to evaluate the drilling efficiency of bits. MSE analysis has also been used in a limited manner to investigate specific inefficiencies in field operations.3,4 In early 2004, the operator initiated a pilot to determine whether the ...
Fred E. Dupriest, William L. Koederitz
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Materials Science, 2015
The results of experimental investigations and the method of digital image correlation are used to investigate the variations of the mechanical characteristics of the material of thermally hardened steel reinforcement across the thickness of a bar. The conventional and true stress–strain diagrams of the solid reinforcement and standard specimens made ...
Q. Zhang +4 more
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The results of experimental investigations and the method of digital image correlation are used to investigate the variations of the mechanical characteristics of the material of thermally hardened steel reinforcement across the thickness of a bar. The conventional and true stress–strain diagrams of the solid reinforcement and standard specimens made ...
Q. Zhang +4 more
openaire +1 more source
Investigation on size effect of specific cutting energy in mechanical micro-cutting
The International Journal of Advanced Manufacturing Technology, 2017Mechanical micro-cutting is one of advanced processes to manufacture the miniature parts. The uncut chip thickness is one of the two important parameters in mechanical cutting. The uncut chip thickness and the cutting edge radius are at the same length scale, and the cutting tool extrudes and shears the workpiece with the round cutting edge during ...
Tao Zhang +3 more
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Modeling and Analyzing of Specific Mechanical Energy in Animal Feed Extrusion Process
Transactions of the ASABE, 2013Abstract. A new mathematical model was proposed to describe the specific mechanical energy (SME) in the animal feed extrusion process based on dimensional analysis methodology (DAM). The effects of feed moisture content (21.3% to 29.7%), screw speed (140 to 240 rpm), and extrusion temperature (133°C to 167°C) on SME were studied by response surface ...
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Mechanical specific energy and drilling efficiency
2022Rasool Khosravanian, Bernt S. Aadnøy
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Mechanical energy metamaterials in interstellar travel
Progress in Materials Science, 2023Pengcheng Jiao
exaly
SPE Journal
Summary As oil and gas exploration progresses to ultradeep and 10 000-m depths, insufficient energy supply during rock breaking by downhole polycrystalline diamond compact (PDC) bits presents a critical challenge. Quantifying the energy consumed in PDC cutter/rock interactions is therefore essential for enhancing bit efficiency and ...
Jiusen Wei +3 more
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Summary As oil and gas exploration progresses to ultradeep and 10 000-m depths, insufficient energy supply during rock breaking by downhole polycrystalline diamond compact (PDC) bits presents a critical challenge. Quantifying the energy consumed in PDC cutter/rock interactions is therefore essential for enhancing bit efficiency and ...
Jiusen Wei +3 more
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A brief review of dynamic mechanical metamaterials for mechanical energy manipulation
Materials Today, 2021Lingling Wu, Hanqing Jiang
exaly
Triboelectric Plasma CO2 Reduction Reaching a Mechanical Energy Conversion Efficiency of 2.3%
Advanced Science, 2022Sumin Li, Bao Zhang, Wenhe Zhang
exaly
A review of mechanical energy storage systems combined with wind and solar applications
Energy Conversion and Management, 2020Montaser Mahmoud +2 more
exaly