Results 81 to 90 of about 159,636 (381)

Experimental Study of Soil Texture and Cross River Structures on Depth of Undercutting Hole Induced by Seepage Erosion in River Banks [PDF]

open access: yesعلوم و مهندسی آبیاری, 2012
Despite of many researches on bank erosion mechanism, there exists an incomplete understanding of one of the basic mechanisms governing sediment loading to streams which is namely erosion by concentrated lateral, subsurface flow which causes river bank ...
Hediyeh Salamatravandi   +3 more
doaj  

Modeling and analysis of water-hammer in coaxial pipes [PDF]

open access: yesarXiv, 2015
The fluid-structure interaction is studied for a system composed of two coaxial pipes in an annular geometry, for both homogeneous isotropic metal pipes and fiber-reinforced (anisotropic) pipes. Multiple waves, traveling at different speeds and amplitudes, result when a projectile impacts on the water filling the annular space between the pipes. In the
arxiv  

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

open access: yesAdvanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat   +6 more
wiley   +1 more source

Investigation on ultimate strength of thin wall tee pipe for sodium cooled fast reactor under seismic loading

open access: yesMechanical Engineering Journal, 2016
It is important to investigate the failure mode and ultimate strength of piping components in order to evaluate the seismic integrity of piping. Many failure tests of thick wall and high pressure piping for Light Water Reactors (LWRs) have been ...
Tomoyoshi WATAKABE   +4 more
doaj   +1 more source

Piping in newsprint rolls [PDF]

open access: yes, 1988
The problem is concerned with the formation of 'piping' or 'moisture welts' on rolls of newsprint; The goal was to develop a mathematical model which would explain why and how these defects occurred, and what might be done to alleviate ...
=, =
core  

On collapse of the inner pipe of a pipe-in-pipe system under external pressure [PDF]

open access: yesEngineering Structures, 2018
Abstract Collapse of the inner pipe of a pipe-in-pipe (PIP) system under external pressure is studied experimentally and numerically herein. Hyperbaric chamber test results of three PIP systems with identical inner pipes and different outer pipes are presented.
Mahmoud Alrsai   +2 more
openaire   +3 more sources

Effects of Creep in Titanium at Room Temperature during Tensile and Profilometry‐Based Indentation Plastometry Testing

open access: yesAdvanced Engineering Materials, EarlyView.
This article concerns room temperature tensile testing, with a range of (nominal) strain rates, of three titanium alloys. Stress–strain curves are analyzed to obtain creep characteristics. Profilometry‐based indentation plastometry testing is also covered, using different penetration velocities, and correlations established with tensile data.
Philip John McKeown   +2 more
wiley   +1 more source

Longitudinal friction forces in piping design [PDF]

open access: yes, 1972
Scheme measures sliding support friction forces and incorporates them into software programs which are used to analyze piping ...
Parker, C. S.
core   +1 more source

Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the effect of a NiAl coating on additively manufactured (AM) IN939 to improve its cyclic oxidation resistance at 1050 °C. The coating promotes protective α‐Al2O3 formation, allowing durability for up to 240 cycles, while uncoated AM‐IN939 experiences spallation and weight loss due to nonprotective oxides.
Fatih Guler   +5 more
wiley   +1 more source

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