Wittayasara: Integration Apply Engineering and Industrial Technology

Improving Efficiency in the Garment Production Process: Case Study of a Garment Factory

Chalalai Wongwian, Alongkorn Chatmuangpak; Suparat Kangsantia — Sat, 29 Jun 2024 00:00:00 +0700

The objectives of this research article were: 1) to analyze the problems in the garment production process within the textile industry; and 2) to reduce the production processes and time in order to be more efficient. This study focused on the polo shirt production process. It used the fishbone diagram to analyze and find the causes of the problems relating to the 7 wastes, and the process flow chart to analyze the value of activities within the production process. Lean manufacturing concepts and ECRS principles were used to improve the production process by eliminating unnecessary processes and combining some processes. Comparative results of the production process before and after the improvement found that the cycle time in the production process was reduced from 5 hours 46 minutes to 4 hours 48 minutes, with the production process reduced by 8 steps, resulting in a more efficient production process (16.76%).

Plywood Cutting Layout Design for DIY Furniture Manufacturing by Heuristic Method

Sarayut Malai, Thachon Kaosomboon, Pincha Torkittikul, Haruthai Thaisuchat — Sat, 29 Jun 2024 00:00:00 +0700

This research aims to compare the efficiency of plywood cutting layout creation using heuristic methods, between non-rotating and 90-degree rotating piece approaches for DIY furniture production. The CutLogic 2D program was utilized to plan and create guillotine cutting layouts. The study employed 11 DIY furniture designs, each consisting of 1-10 sets, with pieces of various rectangular and square shapes. Plywood sheets measuring 1,219x2,438x15 millimeters were used to minimize material waste.

The results showed that the 90-degree rotating piece heuristic method yielded an average total yield percentage of 83.28%, while the non-rotating method averaged 82.75%. This demonstrates that the rotating piece method can increase the total yield by an average of 0.53%. Additionally, it helped reduce wood dust by an average of 0.104 kilograms. These findings indicate simultaneous improvements in material utilization efficiency and reduction of environmental impact.

Comparison of Gray Oyster Mushroom Production in a Smart Farm and Traditional Farm

Sat, 29 Jun 2024 00:00:00 +0700

This study, comparing gray oyster mushroom production in a smart farm and a traditional farm had two objectives: 1. To compare the mushroom production in a smart farm and a traditional farm; and 2. To compare the mushroom production from different arrangements of mushroom lumps. For this research, Internet of Things technology and measurement equipment were installed to control 4 factors of oyster mushroom production: 1. Relative humidity 70 - 90%; 2. Temperature 28 - 32°C; 3. CO₂ content less than 2,000 ppm; and 4. Light 100 lux. The research design divided the smart farm into 4 zones to record the results of mushroom production in each zone. In zones 1A and 1B, the mushroom cultures were arranged in 2 layers vertically, with a gap of 1 layer, and in zones 2A and 2B, the mushroom clusters were arranged in the traditional way, by placing the mushroom clusters on top of each other vertically.

The mushroom production in the smart farm was higher than the traditional farm (24.18-26.51%). When adjusting the arrangement, 2 layers vertically, with a gap of 1 layer, it was found that production in the smart farm was higher than the traditional farm (33.81 - 35.86%). This shows that production in the smart farm was higher than the traditional farm and the arrangement of 2 layers, with a gap of 1 layer, gives better results than the traditional arrangement.

A study of Ethanol Production Using Agricultural Waste from Pineapples

Sat, 29 Jun 2024 00:00:00 +0700

This research studied ethanol production from core and peel of pineapple using natural and baker yeast fermentation. Both fermentations were studied at room temperature for 3, 5, 7 and 15 days. Then, the ethanol content was determined using the UV-Visible spectroscopy technique. The Brix value of the core and peel of pineapple after cellulose digestion using cellulase enzyme was then measured. The amount of ethanol showed that ethanol production from baker yeast was higher than that of natural yeast from both the peel and the core of pineapple. The baker’s yeast produced the highest ethanol content (18.92% after 15 days of pineapple peel fermentation). Ethanol content was measured using the Brix percentage with that of pineapple peel being higher than of pineapple core. All results suggested that pineapple peel and core can be used for ethanol production, and the combination with natural and baker yeast can produce ethanol content higher than that of natural yeast. The ethanol contents from core and peel of pineapple were significantly different (p < 0.05), and the ethanol contents from natural and baker yeast were also significantly different (p < 0.05). Additionally, the basic economic value calculation shows that the profit on ethanol production from 10 kg of pineapple peel is 32.90 baht.

Development of a Basic Digital Mobile Application for Computer Technology Students

Samart Yuenyongphanit, Phakphum Tarmjai — Sat, 29 Jun 2024 00:00:00 +0700

The objectives of this study were: 1) to develop and investigate the efficiency of a Basic Digital mobile application for Computer Technology students to attain the criteria of 80/80; and 2) to assess the learning achievement of Computer Technology students before and after using the mobile application. The sample population was ten first year Computer Technology students at Kamphaengphet Rajabhat University, Maesot, studying in the academic year 2022. The research instruments used were: 1) the Basic Digital Glide mobile application; 2) the evaluation form of components for application; and 3) the student learning achievement form. Results showed that the development and efficiency investigation of the Basic Digital mobile application for Computer Technology students attained the criteria of 81.13/82.96, and the learning achievement assessment of Computer Technology students after using the Basic Digital mobile application was significantly higher than before (p < 0.05).