Tribology and Wear Analysis

This study utilizes an ASTM G99 pin-on-disc tribometer to examine how rotational speed affects the wear behaviour and surface temperature of aluminum alloy 319 (A319) and brass under dry sliding circumstances. The studies are done at room temperature with 0.5 kg of load and 1000–1400 rpm rotating speeds. Materials' tr…

Öz: Kompozit malzemeler, yüksek mukavemete sahip olması ve özelleştirilebilir mekanik özellikleri sayesinde özellikle otomotiv, havacılık ve savunma sanayi gibi farklı alanlarda sıklıkla kullanılmaktadır. Eklemeli imalat teknolojisinin kompozit malzeme üretiminde, şekilsel esneklik, düşük üretim maliyetleri ve kişisel…

As the tribological behaviour of a commercialized, fully synthetic 5W40 engine oil upon the incorporation of reduced graphene oxide in sample (0.02 wt.%) like (5W40 engine oil+ 0.02 wt.% Reduced Graphene Oxide) called rGO6 presented superior tribological properties by exhibiting the lowest COF value in our previous wo…

ABSTRACT This study focuses on the additive manufacturing of pure polylactic acid (PLA) specimens and milled glass fiber (GF)‐filled PLA composites under thermal cycling aging and wear tests. Wear tracks have been analyzed via 3D optical profiling and SEM imaging. DSC was used to characterize the material changes caus…

ABSTRACT This research work investigated the effect of the cyclic thermo‐hygrometric aging regime between −20°C and +40°C with 0–400 cycles on the reciprocating tribological properties of fused deposition modeling (FDM) printed polylactic acid (PLA) and the same material reinforced with 10 wt.% and 15 wt.% of glass fi…

This study evaluates 10 bar water aging effects on reciprocating tribology of FDM-printed PLA and PLA with 10 and 15 wt.% glass fiber (GF). Water uptake was Fickian, and saturation mass rose from 0.0845 g (PLA) to 0.1625 g and 0.295 g (10 and 15 wt.% GF). Reciprocating tests at 40 N over 100 m at 0.5 and 1 Hz showed i…

Polyetheretherketone (PEEK) is a high-performance thermoplastic valued for its biocompatibility and mechanical properties, especially when reinforced with carbon fibre (CFR-PEEK), making it suitable for load-bearing implants. However, its bioinert, hydrophobic surface limits osseointegration. To address this, titanium…

Abstract Polyetheretherketone (PEEK) is a leading high-performance polymer for orthopedic applications due to its favorable biomechanical properties; however, its inherent bioinertness and low surface energy often lead to poor osseointegration. While titanium coatings are used to overcome these limitations, the existi…

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Bu çalışmada, Al7075-WC kompozitleri toz metalürjisi ve sıcak presleme yöntemleri kullanılarak üretilmiştir. Al7075 matrisine ağırlıkça %1, %3, %6, %9, %12, %15, %18, %25, %30 oranlarında WC takviyesi yapılmıştır. Katkı oranlarının ve uygulanan ısıl işlem türlerinin (sinterleme, sıcak presleme) kompozitlerin mikro yap…

In this study, the effects of different mineral filler (CaCO3, talc) mixtures on the dispersion and thermal properties of polymer (PE, PP) were examined. In the compound production carried out in a laboratory-scale twin-screw extruder, granular products were obtained by feeding talc and coated calcite (c-CaCO3) with l…

ABSTRACT High performance thermoplastics like polyether ether ketone (PEEK) are becoming more significant in aerospace and advanced engineering applications since they are stable at high temperatures, resistant to chemicals, and have a good strength to weight ratio. However, next generation lightweight structural part…