angle of repose

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angle of repose

[′aŋ·gəl əv ri′pōz]
(engineering)
(mechanics)
The angle between the horizontal and the plane of contact between two bodies when the upper body is just about to slide over the lower. Also known as angle of friction.

angle of repose

The maximum angle with the horizontal at which a mass of material, as in a cut or embankment, will lie without sliding; the angle between the horizontal and the maximum slope that a soil assumes through natural processes.
References in periodicals archive ?
Angles of repose aren't the only characteristic affecting a truck body's design.
This loss of cohesion results in the formation of flatter slopes, i.e., with lower angles of repose. Lower angles of repose have a direct impact on handling, i.e.
Ultrasonic transducer design combined with patented echo processing techniques permits reliable level measurement of plastic powders and pellets where dust and high angles of repose are present.
Angles of repose under 30[degrees] point to powders with good flowability, 30[degrees]-45[degrees] show some cohesiveness, 45[degrees]-55[degrees] show true cohesiveness, and anything above 55[degrees] is considered as having very high cohesiveness and limited flowability [16].
"The TruPulse can be used to range any number of objects and has been routinely utilized to calculate overhang and utility heights, topographic heights, road grades, slopes, and angles of repose. With the TruPulse, you can determine the distance between two remote objects, the height of an object such as a telephone pole, or the top of a hill, the slope of a hill, the straight-line distance, direction or angle between any number of objects.
Finally, the sand piles with different slope angles were formed, and therefore the corresponding angles of reposes were determined.