Results 41 to 50 of about 23,414 (253)

Experimental Measurements of Wax Precipitation Using a Modified Method of Simultaneous Centrifugation and High-Temperature Gas Chromatography

Energies, 2021
Wax precipitation and deposition are serious flow assurance problems. Wax precipitation is investigated simultaneously using centrifugation and high-temperature gas chromatography (C-HTGC) to obtain the amount and component distribution of precipitated ...
Huishu Liu, Jimiao Duan, Jiang Li, Hao Yan, Jian Wang, Keyu Lin, Liang Guan, Changjun Li   +7 more
doaj   +1 more source

N-Oleoyl Sarcosine as an Engine Oil Friction Modifier, Part 2: Elucidation of Friction-Reducing Mechanism at Room Temperature Focusing on Contribution of NOS in NOS+ZDDP Mixture

Tribology Online, 2022
The tribological properties of a mixture of a commercial organic friction modifier, N-oleoyl sarcosine (NOS), and a commercial anti-wear additive, zinc dialkyldithiophosphate (ZDDP), were investigated.
Weiqi Shen, Dongjiang Han, Tomoko Hirayama, Naoki Yamashita, Tadashi Oshio, Hideo Tsuneoka, Kazuo Tagawa, Kazuhiro Yagishita   +7 more
doaj   +1 more source

Flow Characteristics of Oil-Carrying by Water in Downward-Inclined and Horizontal Mobile Pipeline

Energies
After transporting oil with a mobile pipeline, it is necessary to empty the oil within the pipeline. A common method is to inject water into the inlet to push the oil out.
Gang Fang, Guang Li, Zhi Kou, Huishu Liu, Jimiao Duan, Yan Chen   +5 more
doaj   +1 more source

Basic Study of Grease Rheology and Correlation with Grease Properties

Tribology Online, 2013
Comprehensive interpretations of grease properties are presented. Dropping point, penetration and rheological properties are examined for a wide variety of greases involving both lithium soap greases and diurea greases.
Yoshiyuki Suetsugu, Hiroki Sekiguchi, Yusuke Nakanishi, Yukitoshi Fujinami, Takuya Ohno   +4 more
doaj   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

Advanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba, Sang‐Hyeok Lee, Christina Gasper, Martina Freund, Sandra Korte‐Kerzel, Ulrich Kerzel   +5 more
wiley   +1 more source

The Hydrodynamic Radii of Viscosity Index Improvers for Lubricant Oils

Tribology Online, 2019
Viscosity index improvers are polymeric additives that are commonly used to control the viscometrics of lubricants. Nevertheless, there have been few studies on the molecular size of these additives, which is the origin of their viscosity-increasing ...
Kazushi Tamura, Taeko Nakano
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Effect of HFO Refrigerants on Lubrication Characteristics (Part 2)

Tribology Online, 2023
Following the previous paper focusing on tribological properties of hydrofluoroolefin (HFO) refrigerant, the adsorption behavior of refrigerants on the nascent iron surface was investigated experimentally and the adsorption structure, adsorption energy ...
Yuji Shitara, Tasuku Onodera, Shigeyuki Mori   +2 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Effect of Formulation of Li Greases on Their Flow and Ball Bearing Torque

Tribology Online, 2016
This paper describes a study on the effect of base oil type and thickener type on bearing torques with Li type greases. Using a ball bearing tribometer equipped with a torque sensor, friction torque behaviors were determined for model Li greases with ...
Kazumi Sakai, Yasuha Tokumo, Yusuke Ayame, Yuji Shitara, Hiroyoshi Tanaka, Joichi Sugimura   +5 more
doaj   +1 more source