The study assesses the mechanical performance of composites that contain a mixture of glass fiber (G) and waste flex banners (F) at different proportions and orientations relative to the polyester matrix testing. The mechanical properties of the composite were investigated through impact strength, flexural strength and elastic modulus testing of the samples, while researchers studied fiber composition and orientation effects. Sample C7 (00/flex/00/00/flex/00) represented the optimum impact strength outcome, where it achieved 19.2 J energy absorption and 0.406 J/mm2 impact strength range because appropriate fiber alignment enhances material impact performance. C7 also produced the strong flexural strength of 431.199 MPa and elastic modulus of 21.638 GPa, establishing it as the premier composite for bending capacity. C10 (Polyester) sample demonstrates inferior flexural strength (81.99 MPa) together with the lowest elastic modulus (4.382 GPa) because using plain matrix material does not supply adequate structural integrity. Fiber type and its arrangement pattern control how well a composite material performs as a result of this research. The research enables quantitative assessments for optimal composite material designs that exhibit exceptional bending strength, stiffness, and impact tolerance. This significant increase confirms the potential of using flex banner waste as a reinforcement in environmentally friendly composite materials.
The objective of this study was to statistically analyze the effects of plasma nitriding using response surface methodology(RSM). The RSM, which is dependent on a core composite construction, was used to study the effects of variables like percentage nitrogen / hydrogen flow, deposition time, deposition temperature, and CNT concentration, on wear and corrosion behavior for electroless (Nickel-Boron-CNT)coating for low steel alloy. The results for plasma samples with different CNT concentration (0%, 0.35%, 0.7%) showed the effects of deposition temperature and time as well as percent hydrogen/nitrogen ratio on the corrosion rate. The results of microhardness showed that the highest microhardness value of (1200 HV) was achieved for the Ni-B coating containing 0.35 g/L CNT after plasma nitriding. The optimum design point for plasma nitriding (low wear rate, low friction coefficient, and extreme hardness) was achieved with a desirability of 0.95 at a temperature of 413.03 degrees C for 4h with H2/N2 percentage ratio of %54.17/%45.83 and a concentration of 0.35% CNT, whereas the lowest corrosion rate was achieved at a temperature of 387.78 degrees C for 2.53 h, with H2/N2 percentage ratio of 52.74/47.26 and at a concentration of 0.35g/l CNT. This effect was amplified by raising the deposition temperature between 400 0C and 450 0C. Excellent corrosion resistance is exhibited by the Ni-B-CNT composite coating, and this resistance greatly increases as the concentration of CNTs increases. Excessive CNT deposition leads to agglomeration, harming the coating and reducing its corrosion resistance.
Heavy fuel oil is a complicated amalgamation typically formulated with saline water to produce stable emulsions. The coproduced water is emulsified as it traverses pipelines and choke valves, resulting in emulsions (termed water-in-oil emulsions) that can be stabilized by naturally occurring substances in heavy oil, including asphaltenes, resins, wax, and particulates. The presence of water in heavy fuel oil might result in pipe damage and elevate transportation expenses. A fuel oil emulsion consisting of 40% water and 60% oil was exposed to low-frequency ultrasonic waves (28 KHz) for 10 minutes to evaluate its effectiveness in emulsion separation. To improve separation performance, natural particles derived from date pit (approximately 10-100 mu m) were included at concentrations of 3000, 5000, 10000, and 15000 ppm. Tests were performed at 85 degrees C with ultrasonication power levels of 100, 400, 600, and 800 W, with treatment durations of 2, 4, 6, 8, and 10 minutes. Date pit powder effectively separates oil and water within 24 hours, demonstrating its utility in the rapid destabilization of water-in-oil emulsions due to its distinctive wettability and surface structure. Demulsification efficiency may attain 83% with a dosage of 10000 mg/L and a settling duration of 10 minutes at 85 degrees C. The amalgamation of date pit particles and ultrasonic waves demonstrated a cost-effective, efficient, rapid, and ecologically friendly method for the separation of water-in-oil emulsions. (c) 2025 Jordan Journal of Mechanical and Industrial Engineering. All rights reserved
This study investigates the potential of incorporating olive waste ash (OWA), derived from the combustion of agricultural by-products in Jordan, as a supplementary cementitious material (SCM) in concrete and mortar mixes. In addition to OWA, medical waste ash was also evaluated to explore sustainable alternatives to Ordinary Portland Cement (OPC), a major contributor to global CO2 emissions. The effects of different ash sources and replacement percentages (5%, 10%, 15%) on workability, pozzolanic activity, mechanical strength, and thermal conductivity were analyzed. Furthermore, the influence of natural (Date Palm Fibers) and synthetic (Polypropylene) fibers on the mechanical and thermal performance of the cementitious composites was examined. Results of mortar samples demonstrated that while higher ash content generally reduced compressive strength and workability, certain mixes-particularly those with 10% OWA-maintained competitive strength and exhibited improved thermal insulation. However, the addition of fibers in combination with OWA in a concrete mix showed no effect on the mechanical properties and thermal conductivity. This work highlights the viability of utilizing locally sourced agricultural and industrial waste materials to develop environmentally friendly and thermally efficient construction materials. (c) 2025 Jordan Journal of Mechanical and Industrial Engineering. All rights reserved
This work studied a new advancement in solar distillation that combines altered modified stepped solar stills (STSSs) with 3 novel features: STSS with vertical corrugated wick SS (MSTSS-VCWSS), MSTSS with finned wick absorber (MSTSS-FWA) and paraffin wax containing silver nanoparticles (PCM-Ag-NPs). The rising water issue caused by population increase and loss of freshwater resources was the driving force behind the research. According to experimental data, the highest freshwater production was obtained for MSTSS-FWA with VCWSS and PCMs-Ag, where the combined productivity of the MSTSS-FWA+VCWSS+ PCMs-Ag reached 11950 ml/m2/d, representing a substantial 273% increase over conventional SS. Water costs $0.028 per lire for CSS and $0.011 per liter for MSTSS-FWA+VCWSS+ PCMs-Ag. (c) 2025 Jordan Journal of Mechanical and Industrial Engineering. All rights reserved
