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Open research questions in Tribology and Wear Analysis

51 unresolved questions extracted from the limitations and future-work sections of 250 Tribology and Wear Analysis papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The current methods for wear measurement do not provide detailed information about the wear process. The use of functional thermoplastics for material-integrated wear measurement is a novel approach that can address this gap.

    Theoretical study of functional thermoplastics for material-integrated wear measurement in plain bearings and guide rails · 2026 · DOI

  • The need to improve the performance of polypropylene (PP) for use in various industrial applications. The challenge of achieving uniform dispersion and reproducible tribological performance of WC nanoparticles in the PP matrix.

    Insights into Wear analysis and Decomposition Kinetics of Polypropylene/Tungsten Carbide Nanocomposites · 2026 · DOI

  • Further studies are needed to evaluate the long-term performance of the developed nanocomposites in various industrial applications. The effects of different WC nanoparticle sizes and concentrations on the properties of the nanocomposites need to be investigated.

    Insights into Wear analysis and Decomposition Kinetics of Polypropylene/Tungsten Carbide Nanocomposites · 2026 · DOI

  • Future research could focus on optimizing the liquid-phase deposition process and exploring the potential of other chemical precursors. Further studies could investigate the long-term durability and stability of the formed tribopolymeric films.

    Liquid-Phase Deposition of Carbonaceous Polymeric Films from Cycloalkane Additives on Steel Surfaces · 2026 · DOI

  • The study identifies a gap in the traditional approaches to controlling friction and wear at solid-solid contacts. The gap is addressed by exploring a hybrid approach of in-situ formation of protective tribochemical layers that function as replenishable carbon coatings.

    Liquid-Phase Deposition of Carbonaceous Polymeric Films from Cycloalkane Additives on Steel Surfaces · 2026 · DOI

  • The high stress on the contact surface between the balls and the rails. The severe wear of the material. The need for improved lubrication properties.

    Auxiliary Lubrication Effects of Polyolefin Resin and Porous Polymer Materials Used in the Linear Slide Rails · 2026 · DOI

  • Environmental concerns associated with mineral oils. Limited wettability and interfacial behaviour of polyalphaolefin lubricants. Need for biodegradable lubricants.

    TEMPERATURE-DEPENDENT SURFACE ENERGY AND WETTABILITY OF POLYALPHAOLEFIN WITH ORGANIC FRICTION MODIFIERS · 2026 · DOI

  • Frictional resistance at the bracket-archwire interface - Loss of applied force due to friction - Need for efficient and effective orthodontic treatment

    Comparison of frictional resistance of graphene - and tungsten disulfide-coated orthodontic <span style="font-size: 1rem;">archwires with ceramic self-ligating brackets under dry and wet conditions: An in-vitro </span><span style="font-size: 1rem;">study</span> · 2026 · DOI

  • Cross-shear motion is a common loading pattern in daily joint activities, yet its effects on cartilage and counterpart materials remain insufficiently investigated.

    Wear behavior and material performance optimization of articular cartilage under cross-shear motion · 2026 · DOI

  • In particular, the relationship between frictional response and deformation mode transitions in rubber remains insufficiently established.

    Scratch-induced deformation modes in rubber compounds · 2026 · DOI

  • Abstract Transitions in tribologically induced deformation and wear are well established for metals and polymers, through scratch-based deformation maps, yet a comparable framework for elastomeric materials is still lacking.

    Scratch-induced deformation modes in rubber compounds · 2026 · DOI

  • The paper demonstrates that interfacial adhesion depends on surface coverage packing density (Figure 7f), but only for OFMs with identical tail groups (palmitic acid and pentadecylamine both have long hydrocarbon chains). The generalizability of this packing density-adhesion relationship to organic friction modifiers with structurally diverse tail groups (e.g., branched chains, unsaturated chains, or polar tails) remains unexplored.

    A Multi-scale Interfacial Investigation of Organic Friction Modifiers in Hydrocarbon · 2026 · DOI

  • Figure 7d introduces an arbitrary parameter (interfacial adhesion force divided by molecular binding force) that successfully predicts dynamic COF, but this composite metric lacks physical justification or theoretical grounding. The dimensionless parameter requires validation with additional OFM molecules having different chemical structures beyond the carboxylic acid and primary amine headgroups tested here.

    A Multi-scale Interfacial Investigation of Organic Friction Modifiers in Hydrocarbon · 2026 · DOI

  • Extreme loads and boundary lubrication conditions in wind turbine main bearings. Limited understanding of the wear mitigation mechanisms of self-lubricating coatings. Difficulty in forming effective lubrication films on contact surfaces.

    Numerical analysis of wear characteristics of wind turbine main bearings with self-lubricating coating · 2026 · DOI

  • There is a lack of understanding of the wear mitigation mechanisms of self-lubricating coatings in wind turbine main bearings. There is a need for a comprehensive study of the effect of self-lubricating coatings on the friction and wear performance of spherical roller main bearings.

    Numerical analysis of wear characteristics of wind turbine main bearings with self-lubricating coating · 2026 · DOI

  • Conventional fillers have limitations in simultaneously optimizing multiple properties. There is a need for alternative fillers that can enhance the properties of elastomeric composites.

    Enhancing wear resistance of styrene-butadiene rubber composites through graphene nanoplatelets reinforcement · 2026 · DOI

  • Further studies could investigate the effect of TiO2 incorporation on the properties of other types of geopolymer composites. The optimal TiO2 concentration for improved tribological performance could be explored in more detail. The use of TiO2-reinforced geopolymer composites in construction applications could be investigated.

    Assessment of tribological performance and thermal stability of metakaolin-based geopolymer composites reinforced with high TiO2 concentration · 2026 · DOI

  • The effect of TiO2 incorporation on the properties of metakaolin-based geopolymer composites is not well understood. There is a need for further research into the potential of TiO2 as a reinforcing filler for geopolymer composites.

    Assessment of tribological performance and thermal stability of metakaolin-based geopolymer composites reinforced with high TiO2 concentration · 2026 · DOI

  • Lubricant additive optimisation, such as using an Organic Friction Modifier (OFM), often relies on empirical methods because the role of interfacial energetics in boundary lubrication remains uncertain.

    Interfacial Energy Tuning for Shear-Resilient Boundary Films in Organic Friction Modifier Systems · 2026 · DOI

  • The tribological performance of glass fiber-reinforced polyphenylene sulfide composites is a major concern. The use of carbon nanofibers as reinforcement can potentially improve their mechanical properties and tribological performance.

    Parametric analysis of carbon nanofiber effects on mechanical properties and abrasion resistance of GF/PPS hybrid composites · 2026 · DOI

  • The need for improved lubrication properties in linear slides. The limited understanding of the effectiveness of polyolefin resin and porous polymers on auxiliary lubrication.

    Auxiliary Lubrication Effects of Polyolefin Resin and Porous Polymer Materials Used in the Linear Slide Rails · 2026 · DOI

  • The study identifies a gap in the existing research on the tribological properties of TC4 material. The study identifies a need for lightweight self-lubricating titanium alloy materials.

    Research on Tribological Properties and Synergistic Lubrication Mechanism of TC4-SnAgCu Composites with Face-Centered Cubic Lattice Structure · 2026 · DOI

  • The lack of development of polymer composites based on aromatic polyamide and silver. The need to improve the tribological properties of polymer composites.

    Polymer composites based on aromatic polyamide and silver for highly loaded friction elements of agro-food equipment · 2026 · DOI

  • The study identifies a gap in the understanding of the tribological behavior of Al-based automotive alloy under different levels of used motor oil. The paper aims to fill this gap by investigating the impact of used motor oil on the wear rate and friction coefficient of the alloy.

    Tribological degradation forecast of Al-based automotive alloy under different levels of used motor oil · 2026 · DOI

  • There is a need to develop biodegradable lubricants, or bio-lubricants, which are derived from renewable resources. The wettability and interfacial behaviour of polyalphaolefin lubricants need to be improved.

    TEMPERATURE-DEPENDENT SURFACE ENERGY AND WETTABILITY OF POLYALPHAOLEFIN WITH ORGANIC FRICTION MODIFIERS · 2026 · DOI

Most-cited papers in Tribology and Wear Analysis

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51 open questions have been extracted from the limitations and future-work passages of 250 Tribology and Wear Analysis papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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