Results 11 to 20 of about 2,878,311 (299)

Pressure-Enhanced Penetration with Shaped-Charge Perforators [PDF]

open access: yesSPE Eastern Regional Meeting, 1998
Abstract Computational analysis demonstrates that the penetration of a shaped charge jet can be enhanced by at least 25% by imploding the liner in a high pressure light gas atmosphere. The gas pressure helps confine the jet on the axis of penetration in the latter stages of formation.
Lewis A. Glenn, Glenn, L. A.
openaire   +3 more sources

Derivation of an Enhanced Pressure Differential Expression, for a Penetration Injection with Back Pressure

open access: yesInternational Journal of Engineering and Management Research, 2021
In real-world water injection applications, an in-line injection facilitates a pressure differential that boosts the current flow. A pressure differential created by the injection of a pressurized flow into the mainline of flow is derived from the momentum transfer equation.
Prashant Unnikrishnan Nair
openaire   +3 more sources

Arc pressure and weld metal fluid flow whilst using alternating shielding gases Part 1 : arc pressure measurement [PDF]

open access: yes, 2013
As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on gas shielded welding processes, a comparison between the arc pressures generated using argon, helium, alternating shielding gases and pulsed GTAW has ...
Campbell, Stuart   +2 more
core   +4 more sources

Derivation of forces acting on the liquid weld metal based on arc pressure measurements produced using alternating shielding gases in the GTAW process [PDF]

open access: yes, 2013
As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on the gas tungsten arc and gas metal arc welding processes, a comparison between arc pressures produced using argon, helium, alternating gases and GTAW-P ...
Campbell, Stuart   +2 more
core   +3 more sources

Simulation of CPT penetration in sensitive clay [PDF]

open access: yes, 2022
This paper presents the results from numerical simulations of CPTu penetration in a natural clay combining the SCLAY1S constitutive model with a large deformation Finite Element framework including a coupled deformation and porewater pressure formulation.
Dijkstra, Jelke,   +7 more
core   +1 more source

Melt Pool and Keyhole Behavior Analysis for Deep Penetration Laser Welding [PDF]

open access: yes, 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
core   +1 more source

Sealing Performance Analysis of an End Fitting for Marine Unbonded Flexible Pipes Based on Hydraulic-Thermal Finite Element Modeling

open access: yesEnergies, 2019
End fittings are essential components in marine flexible pipe systems, performing the two main functions of connecting and sealing. To investigate the sealing principle and the influence of the temperature on the sealing performance, a hydraulic-thermal ...
Liping Tang   +3 more
doaj   +1 more source

Liquid‐Assisted Single‐Layer Janus Membrane for Efficient Unidirectional Liquid Penetration

open access: yesAdvanced Science, 2022
Unidirectional liquid penetration plays an important role in many fields, such as microfluidic devices, biological medical, liquid printing, and oil/water separation.
Zhihong Zhao   +8 more
doaj   +1 more source

Intraocular Pressure Following Penetrating Keratoplasty

open access: yesAmerican Journal of Ophthalmology, 1969
American Journal of Ophthalmology 68 (1969) 835-844.
Department of Ophthalmology, University of Florida College of Medicine, Gainesville, FloridaDepartment of OphthalmologyUniversity of Florida College of MedicineGainesvilleFlorida ( host institution )   +2 more
openaire   +3 more sources

Penetration of a glass-faced transparent elastomeric resin by a lead-antimony-cored bullet [PDF]

open access: yes, 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

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