Results 71 to 80 of about 355,438 (294)

Usage of Fusible Sewing Threads to Improve the Waterproof Property of Seam

open access: yesMedžiagotyra, 2020
In classical stitching process, needle holes occur during the penetration of the needle through the fabric. If the waterproofness of the sewn product is important, the water leakage from these holes must be prevented.
Cansu MESEGUL, Gulseren KARABAY
doaj   +1 more source

Leakage performance of a novel turbomachinery shaft seal [PDF]

open access: yes, 2009
Advanced sealing systems are needed to control parasitic leakage flows to achieve high turbine engine efficiency and low emissions. Typical extreme turbomachinery engine operating conditions when combined rotor excursions do not lend simple sealing ...
Akcan, Caner   +3 more
core  

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

open access: yesAdvanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko   +2 more
wiley   +1 more source

Separate-layer balanced waterflooding development technology for thick and complex carbonate reservoirs in the Middle East

open access: yesPetroleum Exploration and Development
Based on the waterflooding development in carbonate reservoirs in the Middle East, in order to solve the problem of the poor development effects caused by commingled injection and production, taking the thick bioclastic limestone reservoirs of Cretaceous
Xinmin SONG   +8 more
doaj   +1 more source

Study on Energy Dissipation and Sealability of Sealing Surface of Premium Connection

open access: yesShiyou jixie, 2022
When premium connections are in service downhole,due to the constraints of wellhead device and bottom hole packer as wells the fluid change in the wellbore,axial vibration occurs at the connections when opening and closing the well,injecting fracturing ...
Li Fan   +5 more
doaj  

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi   +7 more
wiley   +1 more source

EXPERIMENTAL STAND AND METHODOLOGY FOR THE ROLLER’S WORKING BODY RESEARCH

open access: yesВестник СибАДИ, 2019
Introduction. The paper researches the sphere of paving with a roller. The authors describe the current situation in the asphalt concrete’s application as a road surface. Moreover, the authors conduct the excursion into the history of material. The paper
O. Y. Kazakov, G. V. Kustarev
doaj   +1 more source

FESEM and EIS Study of Sealed AA2024 T3 Anodized in Sulfuric Acid Electrolytes: Influence of Tartaric Acid [PDF]

open access: yes, 2008
The present study investigates the effect of tartaric acid on anodic film morphology and on corrosion resistance of hydrothermally sealed anodized AA2024.
Boisier, Grégory   +4 more
core   +3 more sources

On‐Demand Activation of Thin Alginate Shell Encapsulated Volatile Liquid for Untethered Pneumatic Soft Actuation

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan   +3 more
wiley   +1 more source

Estimation method for axial tension of various bolted joints using hydraulic tensioner

open access: yesNihon Kikai Gakkai ronbunshu, 2020
In this paper, a new method for estimating the axial tension of each bolt after the hydraulic tightening, and an appropriate structure for the hydraulic tightening have been proposed.
Yohei TANNO
doaj   +1 more source

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