Related Experiment Video
Updated: May 12, 2025

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
Published on: September 28, 2015
Tribological behaviors of stator rubber with hexagonal micro-texture and enclosed groove of bionic honeycomb
Xin-Fu Liu1, Chun-Hua Liu2, Guang-Xin Hou3
1Discipline Innovation and Wisdom Introduction Base of High-end Laser Intelligent Manufacturing Technology and Equipment, Qingdao University of Technology, Qingdao 266520, China.
Abstract:
The model of hydrodynamic lubrication in the flow field was developed by coupling of hexagonal micro-texture and enclosed groove with a bionic honeycomb structure. The lubrication performance and friction characteristics of the friction pair between the stator and rotor of a screw pump were evaluated on the simulated and experimental results of high acrylonitrile rubber. As the groove depth increased, the cavitation effect and increasing vortex energy losses weakened the friction reduction and wear resistance. An additional bucket-shaped vortex flow was formed beneath the original vortex in the double wedge-shaped overlapping groove, while a new dustpan-shaped divergent flow was formed in the single wedge-shaped boundary groove. Tiny erosion pits were present at the outer edges of the groove bottom after immersion. Slight wear marks were observed on the rubber surface, with fatigue peeling in the texture chamfers, thereby deepening wear marks in some parts of the extended texture region.
More Related Videos
08:02Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
Published on: February 11, 2020
10:52Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
Published on: March 29, 2018
Related Concept Videos
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular...
Design of Transmission Shafts
Thin-Walled Hollow Shafts
Characteristics of Dry Friction
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
Mechanical Characteristics of Steel
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
Residual Stresses in Circular Shafts