Temperature Effects on Friction and Elevated Temperature Behavior of Base Oil-Additive Combinations Under Boundary Lubricated Conditions

1991 ◽  
Author(s):  
T.C. Ovaert ◽  
H.S Cheng ◽  
M.C. Shen
Keyword(s):  
Elevated Temperature ◽  
Temperature Effects ◽  
Temperature Behavior ◽  
Base Oil

The Challenges of Wide Ranging Viscosity Fluids on Liquid Ultrasonic Flowmeters

2006 ◽  
Author(s):  
Jeffrey L. Walters
Keyword(s):  
Elevated Temperature ◽  
Temperature Effects ◽  
Flow Measurement ◽  
Field Testing ◽  
Signal Propagation ◽  
Oil Fields ◽  
Flow Profile ◽  
Fluid Temperature ◽  
Testing Data ◽  
Novel Approaches

Wide ranging viscosities in ultrasonic flow measurement for liquids is a common pipeline scenario. With ever maturing oil fields and the growth in oilsands production, the trend appears to be towards the higher end viscosities and/or novel approaches towards reducing the viscosities for transportation such as heating. The variable viscosities of the fluids provide some unique challenges to ultrasonic flowmeters not only in terms of flow profile modeling, but also in acoustic signal propagation and application to elevated temperature fluids which likewise affect the accuracy or performance of the measurement. The flow profile interrogation techniques will be discussed with an emphasis on a distributed chord model together with the use of a waveguide technology that minimizes acoustic and fluid temperature effects. A combination of R&D, calibration and field testing data will both demonstrate these challenges as well as show the increased performance that results from the application of these approaches.

Mechanical properties of steel fiber-reinforced UHPC mixtures exposed to elevated temperature: Effects of exposure duration and fiber content

2019 ◽  
Vol 168 ◽  
pp. 291-301 ◽  
Author(s):  
Shamsad Ahmad ◽  
Mehboob Rasul ◽  
Saheed Kolawole Adekunle ◽  
Salah U. Al-Dulaijan ◽  
Mohammed Maslehuddin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Temperature Effects ◽  
Exposure Duration ◽  
Steel Fiber ◽  
Fiber Content ◽  
Fiber Reinforced

Elevated temperature behavior of an iron-based shape memory alloy used for prestressed strengthening of civil structures

2019 ◽  
Vol 211 ◽  
pp. 437-452 ◽  
Author(s):  
Elyas Ghafoori ◽  
Martin Neuenschwander ◽  
Moslem Shahverdi ◽  
Christoph Czaderski ◽  
Mario Fontana
Keyword(s):  
Elevated Temperature ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Temperature Behavior ◽  
Civil Structures ◽  
Iron Based
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