Journal ArticleDOI
Optical In Situ Micro Tribometer for Analysis of Real Contact Area for Contact Mechanics, Adhesion, and Sliding Experiments
TLDR
In this article, an instrument was developed that allows in situ optical analysis and tribological measurements for contacts between solid bodies; an interferometric optical analysis can be used to measure and observe contact size, contact geometry, near contact topography, tribofilm formation, and wear debris morphology.Abstract:
An instrument has been developed that allows in situ optical analysis and tribological measurements for contacts between solid bodies; an interferometric optical analysis can be used to measure and observe contact size, contact geometry, near contact topography, tribofilm formation, tribofilm motion, tribofilm thickness, wear debris formation, and wear debris morphology. The optical arrangement is in such a way that a 0th order interference fringe highlights the real contact area of contact, while near contact regions are height-mapped with higher order Newton’s rings interference fringes. Images synchronized with force and position measurements allow for the potential to test and validate models for contact mechanics, adhesion, and sliding. The contact and friction measurement between a rough rubber sphere and a polished glass counterface were studied over a range of loads from 1 to 50 mN.read more
Citations
More filters
Journal ArticleDOI
Hypertension-Linked Pathophysiological Alterations in the Gut.
Monica M Santisteban,Yanfei Qi,Jasenka Zubcevic,Seungbum Kim,Tao Yang,Vinayak Shenoy,Colleen T. Cole-Jeffrey,Gilberto O Lobaton,Daniel C. Stewart,Andres Rubiano,Chelsey S. Simmons,Fernando L Garcia-Pereira,Richard D. Johnson,Carl J. Pepine,Mohan K. Raizada +14 more
TL;DR: Targeting of gut microbiota by innovative probiotics, antibiotics, and fecal transplant, in combination with the current pharmacotherapy, may be a novel strategy for hypertension treatment.
Journal ArticleDOI
Hard coatings with high temperature adaptive lubrication and contact thermal management: review
TL;DR: In this article, a review of advances in the design and exploration of hard coatings with high temperature adaptive behavior in tribological contacts is reviewed, where advances with ab initio modeling of intrinsically layered solids point to new compositions for thermally stable, easy to shear ceramic coatings, load and temperature-adaptive surfaces with arrays of compliant carbon and boron nitride nanotubes as well as low friction two-dimensional structures.
Journal ArticleDOI
Wire and arc additive manufactured steel: Tensile and wear properties
TL;DR: In this paper, the authors investigated the mechanical properties of wire-based (wire and arc additive manufacturing, known as WAAM) deposition of steel metals, both stainless steel 304 and mild steel ER70S.
Journal ArticleDOI
Theory of adhesion: role of surface roughness.
TL;DR: In this article, surface roughness influences the adhesion between elastic solids and a Tabor number which depends on the length scale or magnification is introduced to give information about the nature of adhesion at different length scales.
References
More filters
Journal ArticleDOI
Surface energy and the contact of elastic solids
TL;DR: In this paper, the influence of surface energy on the contact between elastic solids is discussed and an analytical model for its effect upon the contact size and the force of adhesion between two lightly loaded spherical solid surfaces is presented.
Book
The friction and lubrication of solids
Frank Philip Bowden,David Tabor +1 more
TL;DR: Tabor and Bowden as mentioned in this paper reviewed the many advances made in this field during the past 36 years and outlined the achievements of Frank Philip Bowden, and reviewed the behavior of non-metals, especially elastomers; elastohydrodynamic lubrication; and the wear of sliding surfaces.
Journal ArticleDOI
Contact of Nominally Flat Surfaces
TL;DR: In this article, the authors proposed a new theory of elastic contact, which is more closely related to real surfaces than earlier theories, and showed how the contact deformation depends on the topography of the surface, and established the criterion for distinguishing surfaces which touch elastically from those which touch plastically.
Journal ArticleDOI
Effect of contact deformations on the adhesion of particles
TL;DR: In this article, it was shown that despite the van der Waals' forces being capable of increasing the elastic contact area between the ball and the plane, the force that is required to overcome the molecular forces arising when the contact is broken does not increase thereby.
Journal ArticleDOI
Adhesion of spheres : the JKR-DMT transition using a dugdale model
TL;DR: In this article, the energy release rate G is computed by the J-integral and the equilibrium is given by G = w. To avoid self consistent numerical calculations based on a specific interaction model (Lennard-Jones potential for example) we have used a Dugdale model, which allows analytical solutions.