Journal of Engineering Technology Access (JETA) (Online)

Study of factors in reducing dust in the process of burning clay bricks using the repeated firing technique with an open kiln system

Apisit Kaewchaloon — 2023-12-28

This study focuses on reducing PM2.5 dust pollution in clay brick burning by using the technique of extracting smoke by installing a scrubber, studying the appropriate factors in adjusting the settings, including wind power and scrubber distance that affect the amount of PM2.5 dust, as well as checking the amount of gas after re-incineration. From the experiment, it was found that data were collected from incineration that did not use the smoke extraction technique with a scrubber for 24 hours. The data collection results from dust measurement with a sensor that measured PM2.5 dust values where the average amount reached 694.3 μg/m³ in 24 hours, which is 13.87 times higher than the standard. When the Scrubber was installed and burned again, it was found that the amount of PM2.5 dust particles decreased to a minimum of 120 μg/m³ from the analysis. P-Value found that both factors, Wind power and Scrubber distance, did not significantly affect the amount of PM2.5 dust. With a statistical confidence level R-Sq = 81.87 %

Influence of wet and dry cycle on compressive strength and Modulus of elasticity of lateritic soil cement modified with polymer

Pradit Sangkiew — 2023-12-28

The pavement structure is one of the main structures affecting the power and durability of the road. This research studies the performance of lateritic soil-cement mixed with polymer to improve the long-term properties for use as base course. The influence of wet and dry cycle on compressive strength and elastic modulus was mainly investigated. The study showed that Polymer solution reduces water absorption at dry cycle for soil cement. Adding polymer solution could improve strength and elastic modulus, providing longer life-service for pavement.

The influence of welding processes on the microstructure and mechanical properties of hardfacing

Kriangkrai Intapo — 2023-12-28

Abstract

In this investigate welding hardfacing forms were assessed connected through three diverse welding forms: Gas Tangsten arc welding : (GTAW), Shielded metal arc welding (SMAW),and flux cored arc welding (FCAW). Affecting the mechanical properties of welding and microstructure of welding. The experiments showed that the GTAW welding process gave the highest hardness and wear rate. And from the microstructure investigation, the carbide formed in high volume welding with a mixture of molybdenum and tungsten gave the highest hardness for this experiment.

Optimization of the AA6061-T6 aluminum alloy Burnishing Process by response surface method

Panuwat Thosa — 2023-12-28

The influence of operational constraints, the burnishing procedure was conceived and formulated with the aim of enhancing the finalization of the workpiece, thereby mitigating production time. This investigation aimed to scrutinize the optimization potential of the burnishing process applied to AA6061-T6 aluminum alloy through CNC lathe operations, with a specific focus on its impact on tensile strength. The experimentation sought to identify the optimal parameters for the burnishing process, establishing a rotational speed of 200 revolutions per minute, a feed rate of 0.2571 meters per minute, and a feed depth of 0.09 millimeters. The resultant outcome exhibited a peak tensile strength of 370 megapascals. Subsequent microstructure analysis of the workpiece revealed that diverse factors exerted negligible influence on the structural integrity, particularly on the injection structure.