Results 11 to 20 of about 166,367,160 (262)
Penetration of a glass-faced transparent elastomeric resin by a lead-antimony-cored bullet [PDF]
, 2008 The penetration of the lead antimony-cored 7.62 mm × 51 mm bullet into a glass- faced polyurethane elastomeric polymer resin has been studied. The resulting craters in the resin contained elongated bullet core material that had a significant amount of ...
Hazell, P.J. +5 more
core +1 more source
Application of the penetration theory for gas - Liquid mass transfer without liquid bulk: Differences with system with a bulk [PDF]
, 2006 Frequently applied micro models for gas-liquid mass transfer all assume the presence of a liquid bulk. However, some systems are characterized by the absence of a liquid bulk, a very thin layer of liquid flows over a solid surface.
Versteeg, G. F. +8 more
core +2 more sources
Measuring the strength of brittle materials by depth-of-penetration testing [PDF]
, 2010 Based on an energy conservation model, the strength offered by a number of brittle materials has been calculated from depth-of-penetration (DOP) test results. Each material was completely penetrated by a tungsten carbide cored projectile of known kinetic
Hazell, Paul J., P J Hazell
core +1 more source
Melt Pool and Keyhole Behavior Analysis for Deep Penetration Laser Welding [PDF]
, 2010 One usually defines the main characteristic of the welding performances of a given laser system by its “penetration curve” that corresponds to the welding depth as a function of the welding speed Vw for a given set of operating parameters.
R Fabbro, Fabbro, R, FABBRO, Rémy
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Prediction of penetration Rate and cost with Artificial Neural Network for Alhafaya Oil Field
Iraqi Journal of Chemical and Petroleum Engineering, 2018 Prediction of penetration rate (ROP) is important process in optimization of drilling due to its crucial role in lowering drilling operation costs. This process has complex nature due to too many interrelated factors that affected the rate of penetration,
Kadhim Hmood Mnati, Hassan Abdul Hadi
doaj +1 more source
Dominant rock properties affecting the penetration rate of percussive drills [PDF]
, 2003 Percussive blast hole drills were observed in eight rock types at an open pit mine and three motorway sites. The net penetration rates of the drills were calculated from the performance measurements.
Feridunoglu C., Bilgin N., Kahraman S.
core +2 more sources
Data Knowledge Dual-Driven Rate of Penetration Prediction Method for Horizontal Wells
Applied Sciences, 2023 The prediction and optimization of the rate of penetration (ROP) for horizontal wells are more complicated than for vertical wells, but most of the current ROP prediction studies are for vertical wells, which cannot be adapted to the complex drilling ...
Xiuwen Zhao, Hu Yin, Qian Li
doaj +1 more source
Energies, 2023 Prediction of the rate of penetration (ROP) is integral to drilling optimization. Many scholars have established intelligent prediction models of the ROP.
Jianxin Ding +7 more
doaj +1 more source
Enhanced chlorhexidine skin penetration with eucalyptus oil [PDF]
, 2010 Background Chlorhexidine digluconate (CHG) is a widely used skin antiseptic, however it poorly penetrates the skin, limiting its efficacy against microorganisms residing beneath the surface layers of skin. The aim of the current study was to improve the
Conway, Barbara R +26 more
core +2 more sources
Rudarsko-geološko-naftni Zbornik, 2021 Rock drilling is the process of penetrating and crushing rocks, which is characterized by the low rate of penetration (ROP) and drilling rate because of the amount of cuttings that remain in the drilling environment and the thermal stresses generated at ...
Shahrokh Khosravimanesh +3 more
doaj +1 more source