The Effect of Manufacture Process on Mechanical Properties and Burning Behavior of Epoxy-Based Hybrid Composites

The production of hybrid layered composites allows comprehensive modification of their properties and adaptation to the final expectations. Different methods, such as hand lay-up, vacuum bagging, and resin infusion were applied to manufacture the hybrid composites. In turn, fabrics used for manufacturing composites were made of glass (G), aramid (A), carbon (C), basalt (B), and flax (F) fibers. Flexural, puncture impact behavior, and cone calorimetry tests were applied to establish the effect of the manufacturing method and the fabrics layout on the mechanical and fire behavior of epoxy-based laminates. The lowest flammability and smoke emission were noted for composites made by vacuum bagging (approximately 40% lower values of total smoke release compared with composites made by the hand lay-up method). It was demonstrated that multi-layer hybrid composites made by vacuum bagging might enhance the fire safety levels and simultaneously maintain high mechanical properties designed for, e.g., the railway and automotive industries.

The Impact of Various Fuels on Particulate Emissions for a Compression Ignition Engine Equipped with a Diesel Particulate Filter

The aim of this research was to highlight the impact of using different types of fuels on particulate emissions and also on the operation on particulate filters on diesel engines. For all the results obtained from the experimental tests, comparative studies were performed to find the optimal fuel mixture that can be used in order to obtain the optimal performance of the particle filter, without affecting the engine performance. Following the initial tests performed without DPF, the case with the highest smoke emission value (2000 1/min) was identified. For this case, continuous measurement tests were then performed. For this reason, a more detailed analysis was made only for this case.

UPIN DAN IPIN: JEREBU DALAM ANIMASI (Upin and Ipin: Haze In Animation)

Unmanageable anthropogenic activity able to cause haze. It is known that haze happened naturally. However, uncontrollable of these anthropogenic activities somehow may lead to the occurrence. Air pollution, farming, forest exploration and motor vehicle’s smoke emission are among the causes and factors for severe haze. This writing analyses the factors, impacts and ways to overcome the effect of haze that is included in the animation series of Upin dan Ipin. The selected series from Upin dan Ipin is in Season 7 Episode 10 entitled ‘Bahaya Jerebu’. This research is using text analysis method and research method that includes reference materials such as articles, journals, thesis and different writing articles. The findings of this research conclude that among the factors that lead to the occurrence of haze in Upin dan Ipin series are open burning and the smoke emission from motor vehicles. Haze manages to give impacts to health, psychology, economy and social matters. There are few suggestions and ways to overcome that has been suggested through this animation to minimize the hazardous haze such as wearing face masks, less outdoor activities and bury waste to avoid open burning. In conclusion, this children animation Upin dan Ipin manage to conveys countless significant messages and good results for the audience in general. Keywords: Upin dan Ipin animation; haze; open burning; haze effect; disadvantages of haze

Performance and Emission analysis of Multi-Cylinder Common Rail Direct Injection Diesel Engine Powered with Blends of Tyre Pyrolysis Oil-Ethanol-Diesel

This paper mainly focuses on optimal replacement of diesel by Tyre Pyrolysis oil-Ethanol blends to run a common rail direct injection (CRDI) multi cylinder engine and to compare the results with neat diesel fuel operation results at 1500 rpm. The engine was operated at different loads and speeds. From the experimental study, decrease in brake thermal efficiency (BTE) and oxides of nitrogen (NOx) emission with increase in carbon monoxide (CO), hydrocarbon (HC), and smoke emission was observed for blends as compared to diesel fuel. Further, it was also observed that increase in speed from 1200 rpm to 1800 rpm yielded higher BTE with decrease in CO, HC and smoke emission. But slightly increase in NOx, peak pressure (PP) and heat release rate (HRR) was reported at higher speed as compared to lower speeds. Beyond engine speed of 1800 rpm, knocking was observed.

Plasticized Poly(vinyl chloride) Modified with Developed Fire Retardant System Based on Nanoclay and L-histidinium Dihydrogen Phosphate-Phosphoric Acid

The current work assessed the burning behavior of plasticized poly(vinyl chloride) (PVC-P) modified with a two-component composition, consisting of L-histidinium dihydrogen phosphate-phosphoric acid (LHP) and nanoclay (n). The thermal and thermodynamical properties of the PVC-P containing from 10 to 30 wt% of the fire retardant system (FRS) were determined by thermogravimetric analysis (TG) as well as by dynamic mechanical thermal analysis (DMTA). In contrast, fire behavior and smoke emission were studied with a cone calorimeter (CC) and smoke density chamber. The research was complemented by a microstructure analysis, using a scanning electron microscope, of the materials before and after burning CC tests. The effects were compared to those achieved for PVC-P, PVC-P with a commercially available fire retardant, the substrate used for the produced LHP, and the mixture of LHP and zinc borate, both of which contained the same share of nanoclay. Based on a notable improvement, especially in smoke suppression suggests that the n/LHP system may be a candidate fire retardant for decreasing the flammability of PVC-P.

Performance and Emissions Characteristics of a Direct Injection C.I Engine Fuelled with Waste Plastic Oil and Diesel Concoction

The oils extracted from the waste plastic can be an admirable alternate for the compression ignition engines nevertheless they capitulate upper smoke emissions along with deprived performance when compared with diesel. The extraction of waste plastic oil (WPO) is attained through pyrolysis. The impact of accumulating a constituent hexanol (H), a biologically available biofuel is assessed. Three ternary mixtures, DE50-WPO40-H10, DE50-WPO30-H20 and DE50-WPO20-H30 has been deliberately primed for utilizing mutually a cast-off element (WPO maximum of 40 percent) along with a non-conventional part (hexanol maximum of 30 percent). The performance characteristics and emission factors of C.I engine fuelled with the above mix were assessed. The output specifies that hexanol inclusion makes significant reduction in smoke emission in addition to privileged HC emission in contrast to diesel. Inclusion of 10 percent hexanol in volume with WPO and diesel mixture retards the NOx emission considerably whilst match up to WPO as well as diesel individually. In spite of this, NOx emission is superior than the subsequent WPO with increased degree of hexanol converges. Brake thermal efficiency of the engine increases by way of escalating the hexanol portion in the blend while comparing with WPO. The fuel spending of concoction has been established to be reduced while compared to WPO. DE50-WPO40-H10 concoction showed a reduced amount of NOx as well as smoke emission.

Synergistic effect of chitosan derivative and DOPO for simultaneous improvement of flame retardancy and mechanical property of epoxy resin

In this work, the effects of a chitosan-based derivative (CSA), DOPO and CSA-DOPO additives on the flammable properties of EP composites were systematically studied, where CSA was synthesized by a facile condensation between chitosan (CS) and 9-anthralaldehyde and. DOPO was 9, 10-dihydro-9-oxa-10- phosphaphenanthreene-10-oxide. The mass ratio of CS and 9-anthralaldehyde in CSA was determined by elemental analysis and theoretical calculation, which matched well with each other. Under the 8% addition in EP, EP/2.66%/5.34%DOPO sample was the only one, which passed the UL-94 rating and exhibited the highest LOI value of 36.4%. Compared with EP, the cone calorimeter test (CC) showed that the total smoke emission value and the peak heat release rate of the CSA and DOPO modified EP decreased 36.0% and 61.9%, respectively, and the residual char amount increased by 151%. The possible flame retardant mechanism of CSA/DOPO towards EP was proposed according to the results of the real time FTIR spectra at different pyrolysis temperatures, cone calorimeter and Py-GC/MS analysis for EP and EP/2.66%CSA/5.34%DOPO samples, and Raman spectra and XPS for their char residues. Moreover, the incorporation of CSA/DOPO effectively improved the mechanical properties, especially, the flexural strength was increased by 52.3%. It was proposed that CSA/DOPO plays roles in both vapor and condensed phases, and the synergistic effect of CSA and DOPO significantly improve the flame retardancy and mechanical strength of EP.

Development of Excessive-Smoke-Emitting-Car Fault Diagnostic System (ESECFDS) based on Case-Base Reasoning (CBR) Methodology

This paper proposes a diagnostic system, ESECFDS, to solve the problem of excessive smoke emission from a faulty car, based on Case-Based Reasoning (CBR) Methodology that accepts a user query as a new case, compares it with several stored cases in a Case-Base (CB) based on a similarity score using Jaccard Similarity method and provides feedback result to the user. The CBR cycle R4 Model of Aamodt and Plaza has been modified to R5 Model to improve the time complexity of the proposed algorithm of the system over the popular R4 Model.