Molybdenum disulfide (MoS2) and hexagonal boron nitride (hBN) are well-known two-dimensional (2D) materials with a wide range of potential uses in nanofluidics and water treatment. Their performance in these domains is critically influenced by their interactions with liquids, however. This study investigates the role of material orientation in determining the interfacial properties of 2D materials, focusing on wetting behavior and hydrodynamic friction. Using molecular dynamics simulations, this study analyzes the impact of crystallographic orientation on water contact angle and water slip length, aiming to guide the design of optimized 2D materials for nanofluidic and desalination applications. The results reveal that the basal plane of MoS2 demonstrates greater hydrophilicity than the basal plane of hBN. On the other hand, the zigzag plane of hBN exhibits higher hydrophilicity than the basal plane of MoS2 .
Carbon-based nanomaterials (carbon nanotubes, graphene, fullerenes, nanodiamonds, quantum dots, etc.) have excellent chemical, electrical, thermal, optical, and mechanical properties. Carbon nanotubes (CNTs) must be uniformly dispersed throughout the matrix to maximize their synergistic effects and improve the properties of composites. The clustering of CNTs causes poor physical and mechanical properties in nanocomposites. CNT is an excellent filler material in carbon fiber reinforced polymer (CFRP) for enhancing conductive properties of CFRP. Performance enhancement of CFRP depends upon the optimized nanofiller content and extent of its uniform distribution in composites. Selection of appropriate CNT distribution techniques plays an important role in the synthesis of nanocomposites. Current work emphasizes on comparison of different innovative CNT embedment methods (hand layup, spray method, and spray-vacuum-assisted infusion) for synthesis of nanocomposites in terms of ease of manufacturing. The impact of CNT embedment techniques on electrical and thermomechanical properties of CNT-CFRP nanocomposites is also compared in this research article, which ultimately provides guidelines for appropriate CNT embedment methods selection.
Adaptable mechanical components known as compensators are made of metal and are used to handle thermal expansion and relative motion in pipes. The primary function of this assembly is to allow the individual mating components to expand and contract more easily. Heat exchangers, gas turbine pipe systems, power stations, chemical plants, pressure vessels, automobile exhaust systems, refineries, and power vehicles all make use of expansion joints. Designing bellows and analyzing their structural integrity during thermal exposure are both made more difficult by the inherent conflicting material properties of flexibility and rigidity. The main objective of this study is to assess the structural integrity at room temperature and under the influence of internal fluid pressure, which causes the corrugations of the compensator joint to expand and contract. In order to understand the convolution stress behavior necessary to maintain the structural integrity of the compensator before it experiences permanent plasticity (yield) under different loads, this study uses design of experiments (DOE) analysis. It mainly examines the parametric influences on the QW and QDT factors. EJMA takes into consideration the input components' influences through the nondimensional parameters QW and QDT. These results help designers in figuring out the maximum size, type, and nature of stress in order to predict life cycles with more precision. This aids in estimating the fatigue life of the expansion joint, as the maximum stress is a function of the number of life cycles of the joint.
This study investigates the forced vibration analysis of a sandwich panel on a Winkler-Pasternak foundation, incorporating magneto-rheological (MR) fluid. Displacement and strain stress relations are derived through Hamilton's principle, considering high-shear deformation and modified coupled stress. The resulting equations of motion are then formulated, and the vibration equations are obtained using the Galerkin method. To validate the accuracy of the finite element formulation, a careful assessment is conducted by comparing it with results obtained from assumed modal formulations and data available in existing literature. This comprehensive examination also involves the use of various materials to evaluate the influence of the MR core. The outcomes of the study indicate that the thickness of the MR core has a significant impact on damping, whereas the piezoelectric layer has a lesser effect. In particular, PZT-7A emerges as the piezoelectric material with the most prominent effect on damping vibration forces. Additionally, the study considers the effect of nanoparticles.
