On the tribological behavior of retrieved hip femoral heads affected by metallic debris. A comparative investigation by stylus and optical profilometer for a new roughness measurement protocol

Editorial: Biotribology and Biotribocorrosion Properties of Implantable Biomaterials

“…Considering the above, to date, in-silico wear prediction models of artificial human implants attract the attentions of researchers to obtain complete tribological theoretical and numerical models useful for the in-silico testing (O'Brien et al, 2015;Mattei et al, 2016;Affatato et al, 2018), which could avoid the standard in-vitro time-consuming investigation procedures (simulators) and could contribute as tool for a more and more accurate tribological design of human prostheses. Obviously, the accurate wear prediction of artificial joints requires to develop detailed tribological models accounting for the complexity and the multiscale of wear phenomenon (Vakis et al, 2018) which requires scientific knowledge in many fields, such as contact mechanics (Popov, 2010), topographic contact surfaces characterization (Merola et al, 2016), new materials formulations (Affatato et al, 2015), stress-strain analysis and FEM/BEM simulations (Ruggiero et al, 2018;Ruggiero and D'Amato R, 2019), musculoskeletal multibody modeling (Zhang et al, 2017), unsteady synovial lubrication modeling (boundary/mixed, hydro-dynamic and EHD) (Ruggiero and Sicilia, 2020), tribo-corrosion (Tan et al, 2016), metal transfer phenomena (Affatato et al, 2017), biomaterials characterizations (Ruggiero et al, 2016), etc. Moreover, innovative biomaterials and manufacturing procedures (e.g., 3D printing), novel surface modification (coatings) constitute new and exciting research areas (Ten Kate et al, 2017).…”

Tribology and Dentistry: A Commentary

“…From a tribological point of view, the superficial asperities come into contact undergoing plastic deformation and adhering locally (micro junctions). In these cases, different amounts of material should be transferred from one surface to another in relation to the distance that separates the contact bodies, their mechanical and chemical properties, their surface topography [32,33], contact pressure, temperature and environment. The mass of material transferred should break during the motion increasing, but not necessarily along the original melting line.…”

Characterization of Friction Surfaced Coatings of AISI 316 Tool over High-Speed-Steel Substrate

“…In connection with this, Ruggiero et al [27,28] investigated both the mechanical and the tribological behaviour of glass fibre and carbon fibre-reinforced epoxy, taking into account the influence of the production parameters on the content of laminate voids. Also, Merola et al [29] validated a new protocol to measure surface roughness on retrieved femoral heads by using the aforementioned two different acquisition techniques. According to them all femoral components of their investigation showed remarkable differences in roughness values.…”