Kasem Bundit Engineering Journal

การวิเคราะห์การสั่นสะเทือนเชิงตัวเลขสำหรับคานเซลลูล่าร์ที่ใช้วัสดุเชิงประกอบแบบ FGM

ชนนฐ์ยวัส รัตนวิเชียร; กำธรเกียรติ มุสิเกต, บุญชัย ผึ้งไผ่งาม — Wed, 25 Dec 2024 00:00:00 +0700

This research performs a freeform numerical vibration analysis for a two-dimensional problem using the Finite Element Method of a cellular Euler-Bernoulli beam with mechanical material properties. BDFGM (Bi-Directional Functionally Graded Materials) is composed of two materials, Aluminum and Zirconia. A mixing law based on rule of mixtures is proposed to account for the variation in the volume fraction of materials. It is determined that the variation indices of elastic modulus and density vary with the exponentially along the axial direction and power law with the depth of the beam. The first three natural frequencies of the simple cellular beams obtained from the analysis are found to be inversely proportional to the variation index increasing in both directions with the variation index increasing with depth. It affects the rate of decrease of the natural frequency value more than the axial variation index. This proposed model can be applied to the analysis and design of bidirectional composites consisting of more than two materials with different properties in order to determine the appropriate natural frequency value for the desired problem.

การปรับปรุงการเก็บข้อมูลและควบคุมการผลิตบรรจุภัณฑ์โดยใช้อินเตอร์เน็ตออฟติงส์ตามแนวทางการบำรุงรักษาแบบทวีผลทุกคนมีส่วนร่วม

อนัญญา มะโนวงค์; ประจวบ กล่อมจิตร — Wed, 25 Dec 2024 00:00:00 +0700

This research focuses on studying the improvement of efficiency in data collection and process control in packaging production using the Internet of Things (IoT) combined with Total Productive Maintenance (TPM). The initial step involves addressing issues identified in the packaging production department that affect product quality, with the primary problem being packaging leakage. Techniques such as the 7 QC Tools and Why Why Analysis were employed to identify and analyze the root causes. The analysis revealed that the cooling water system using a chiller could not maintain the temperature according to standards due to lack of maintenance. Thus, the cooling water system was redesigned, and IoT devices were installed, including Arduino Uno and Raspberry Pi 4, to collect data and create a dashboard for controlling the cooling water temperature. Data was stored using Google Sheets. Post-installation, the system could log real-time chiller operations. The collected data was then analyzed to plan TPM implementation using three pillars: Equipment and Improvement, Autonomous Maintenance, and Planned Maintenance. The research results demonstrate significant success in reducing the number of packaging leakage cases from 40 incidents before improvement to just 2 incidents afterward, marking a 95% reduction. The enhancement of the cooling water system effectively addressed the issues, reducing production risks and increasing product efficiency. The integration of IoT with TPM in the chiller cooling water production process serves as a model for further improvements in other production process areas, enhancing overall efficiency.

SMART SECURITY SYSTEM ON RASPBERRY PI WITH FACE RECOGNITION AND OBJECT DETECTION

Sa-nga Songmuang — Wed, 25 Dec 2024 00:00:00 +0700

The smart Security System presented in this research harnesses the capabilities of Raspberry Pi to provide a comprehensive solution for home security and control. The system integrates three main functions aimed at enhancing user safety and convenience. The system employs a camera module to detect and recognize faces in its field of view. In the event of an unauthorized person attempting to enter the premises, the system captures the intruder’s face and promptly sends the image to the user’s mobile phone. This real-time notification ensures swift awareness and response to potential security threats. The camera is configured to detect and monitor various objects, such as vehicles or individuals, stationary for more than five minutes in front of the home. Upon detection, the system captures images of the objects and transmits them to the user’s mobile phone. The system provides users with the capability to remotely control electronic devices within the home. Through the application or system interface, users can turn on or off specified devices. The primary goals of the system include the development of a reliable application for smart home security and control and the evaluation of its performance in real-world scenarios.

การเพิ่มสมบัติเชิงกลและการต้านทานรังสียูวีของวัสดุเชิงประกอบยางธรรมชาติผสมนาโนไทเทเนียมไดออกไซด์

พีรวัส คงสง; มาหามะสูไฮมี มะแซ — Wed, 25 Dec 2024 00:00:00 +0700

The purpose of this research was to study the influence of adding titanium dioxide nanoparticles on the mechanical properties of natural rubber under UV radiation. The composite was prepared by mixing natural rubber with titanium dioxide nanoparticles at quantities 0, 1, 2, 3, and 4 phr in a two-roll rubber mill. The composites were molded using a compression molding machine, and tensile strength tests were conducted along with morphological studies. The morphological properties observed using a scanning electron microscope revealed that the titanium dioxide nanoparticles were well dispersed, leading to improved mechanical properties with increasing amounts of titanium dioxide nanoparticles. Optical microscope showed the crack patterns of the composite material between titanium dioxide nanoparticles and natural rubber after UV exposure for 30 days at 0, 1, 2, 3, and 4 phr. The results indicated that the cracks on the natural rubber surface decreased as the amount of titanium dioxide nanoparticles increased.

การประยุกต์ใช้เทคนิควิศวกรรมคันเซสำหรับการออกแบบและพัฒนาผลิตภัณฑ์กระเป๋าสตางค์จากต้นคลุ้ม

อภิชล ทองมั่ง กำเนิดว้ำ; ธยา ภิรมย์, สุรสิทธิ์ ระวังวงศ์, ชัยวัฒนภัทร เลาสัตย์ — Wed, 25 Dec 2024 00:00:00 +0700

The objective of this research is to design and develop a wallet product from Donax canniformis basketry by applying Kansei engineering techniques. This research began with a survey and selection of words expressing feelings or Kansei of customers towards the product. Then, explore the emotions, feelings, and needs of customers in terms of feelings and product characteristics towards product representative images for use in product design. The questionnaire used in the data survey was a Likert type. The data used to create the third questionnaire, the main part include, the words section expressing the extent of feelings, the scope of product features, and product representative images. The data obtained from the survey was then analyzed using quantitative analysis. The results of the research found that the words expressing the feelings in designing a wallet product from Donax canniformis wicker were compact, outstanding, convenient to use, modern, and eye-catching. In addition, the requirements and features for designing a wallet from Donax canniformis include product size, texture, material for opening and closing the bag, product edge sewing material, and product shape. It is more consistent with the emotions, feelings, and needs of customers.

การศึกษาคุณสมบัติของแอสฟัลต์คอนกรีตเมื่อใช้วัสดุชั้นผิวทางเดิมที่ปรับปรุงคุณภาพด้วยเส้นลวดในยางรถยนต์

ธีรเดช เอียดยอด; ชลัท ทิพากรเกียรติ, ภาวัต ไชยชาณวาทิก — Wed, 25 Dec 2024 00:00:00 +0700

This research studied the properties of asphalt concrete that was mixed with the original pavement material and improved with wires in car tires, size approximately 10-20 millimeters. This research is designed to define the mixture as the percentage by weight of the aggregate. Rock dust, 3/8”, 1/2”, 3/4” are equal to 40 : 23 : 17 : 20. The amount of asphalt cement is equal to 5.0% by total weight of aggregate. This research tested the engineering properties, including stability, flow, and SEM. It was found that at a mix ratio of W0.1, the highest stability was 2,524.77 lbs, which is higher than HMA, which has a stability value of only 2,260 lbs. Every wire mixture in tires has a higher density than all HMA. Consistent with the presence of tire-derived steel, bonds will form within the asphalt aggregate, bonding together on the surface of the wires in tires, which are rough and adhere to the asphalt. It can be clearly seen from the photo of the SEM test results that it passed the criteria specified for the Binder Course class. It can be used in road with high traffic volumes (Heavy Traffic). It will reduce the mixing ratio of new aggregates and allow for recycling of materials. Adding RAP as an ingredient can reduce the use of new aggregate by up to 20 percent and reduce the cost of AC Binder Course by 5 percent per square meter. It can be reused and reduces the cost of destroying old tires that have already been used.

การประยุกต์ใช้หลักการซิกซ์ ซิกม่าเพื่อลดสินค้าที่ไม่เป็นไปตามข้อกำหนดในกระบวนการบรรจุเครื่องดื่ม

เกวลิน สำเภาทอง; กวินธร สัยเจริญ, สิทธิชัย แซ่เหล่ม — Wed, 25 Dec 2024 00:00:00 +0700

The objective of this paper was to reduce non-conforming product from filling the beverages process. The DMAIC method from Sig Sigma was applied as a research methodology to reduce variability in the beverage filling process, which consists of five phases including define, measure, analyze, improve, and control. In the analyze phase, Design of Experiment (DOE) with the 2^k Factorial Design method at two levels was used for identifying factors that affect with non-conforming product. The experimental results showed that when the machine was configured with the following optimal settings: increasing the length of the vent tube by 3 millimeters, increasing the pressure in the ring bowl by 0.1 bar, and raising the water level in the ring bowl by 20 millimeters from the original settings, the waste from overfill was reduced from 16.31% to 0%, and Process Capability (C_pk) increased from 0.33 to 0.68.

การประมาณประสิทธิภาพของปูนซีเมนต์ไฮดรอลิกในการพัฒนากำลังและความแข็งแกร่งของดินทรายสำหรับการปรับปรุงคุณภาพดิน

Wed, 25 Dec 2024 00:00:00 +0700

This research aims to investigate the effectiveness of hydraulic cement (HC) in improving the strength and stiffness properties of sandy soil, specifically focusing on unconfined compressive strength (q_u) and the secant modulus (E₅₀), derived from the stress-strain relationship of unconfined compression tests. The soil samples used were sandy soil obtained from the construction site of a water pumping station at Ratchamnong Temple in Nong-Khai Province. These samples were mixed with HC at varying proportions of 10%, 15%, 20%, 25%, and 30% by dry weight. The curing periods employed were 3, 7, 14, and 28 days, with a water/cement ratio of 1:1. To evaluate HC as an environmentally friendly admixture for ground improvement, the test results using HC were compared with those using ordinary Portland cement (OPC) under identical cement content and curing periods. The results indicated that increasing the cement content and curing period enhanced both q_u and E₅₀ for both HC and OPC, showing similar trends for both types of cement. However, the results for HC were slightly lower than those for OPC, likely due to differences in oxide composition. Scanning Electron Microscope analysis reveals that the development of Ettringite formation, resulting from the cement hydration reaction, shows significant similarity between HC and OPC as the curing period increases. Despite this, the linearly correlation between q_u and E₅₀ for HC admixture was nearly identical to that for OPC admixture. From the overall results, the relationship between q_u and E₅₀ can be expressed as E₅₀ = 78.165q_u. Therefore, HC admixture can be effectively used in sustainable ground improvement, particularly in deep mixing methods, as an environmentally friendly alternative to OPC admixture.

สมบัติการทนต่อแรงกระแทกและสัณฐานวิทยาของวัสดุเชิงประกอบพอลิเอทิลีนผสมเส้นใยธรรมชาติด้วยกระบวนการขึ้นรูปแบบหมุนเหวี่ยง

Wed, 25 Dec 2024 00:00:00 +0700

Research on impact strength and morphology of natural fiber-reinforced composite materials from the rotational molding process aimed to determine the appropriate ratio of banana fibers to polyethylene for process formation. Additionally, the impact resistance and morphological characteristics of polyethylene products reinforced with banana fibers were examined. The percentage of banana peel fibers by weight at 0%, 10%, 20%, 30%, 40%, and 50% was examined, including the combination of untreated banana fibers and treated fibers with a silane coupling agent. The results showed that the impact strength of polyethylene composite reinforced with untreated banana fibers was not modified. The values were as follows: 3.96, 5.33, 4.18, 3.74, 2.11, and 1.03 kJ/m², and the silane coupling agent-modified polyethylene composite reinforced with banana fibers. The values were as follows: 3.96, 5.57, 4.87, 3.74, 2.90, and 1.20 kJ/m², the optimal ratio is 10% by weight. Composites based on fibers modified with silane have higher impact resistance values than composites using unmodified fibers in all ratios. Morphological tests revealed that the beam emission of electrons has demonstrated that adding silane dual agents to the fiber surface can enhance adhesion at the polyethylene-banana leaf fiber interface, improving the mechanical characteristics of the composite material.

การแก้ปัญหาการจ่ายโหลดอย่างประหยัดร่วมกับการปล่อยก๊าซเรือนกระจกที่มีฟังก์ชันราคาเชื้อเพลิงแบบไม่เรียบด้วยการผสมผสานวิธีการหาคำตอบที่เหมาะสมที่สุดเชิงการจัดและวิธีเชิงแจกแจง

จิรพนธ์ ทาแกง; วันไชย คำเสน, ทวินันท์ จันทะวัง, เพลิน จันทร์สุยะ — Wed, 25 Dec 2024 00:00:00 +0700

This research is a combination of finding the optimal solution by combinatorial optimization and exhaustive enumeration methods. To solve the problem of economical load distribution combined with greenhouse gas emissions with a non-smooth function. The method is to use the answer obtained from the optimal arrangement method, which is the SA method, as the initial answer. It then redefines the search boundary around the initial answer and uses the distributional optimal solution, BCO. Use a case study consisting of a large system with 40 generator units with demand 10500 MW and a system with a non-smooth cost function. The results were compared with SA and BCO in terms of the quality of the answers and the speed of convergence to the answers. The proposed method provides the best quality of answers and converge on the answer as quickly as possible. In addition, to test the efficiency, the results were compared with the GSA and CFLBO methods. The results of the comparison of the proposed methods yielded the answer in terms of the lowest production cost. Therefore, it can be concluded that the proposed method can be used to efficiently find solutions to the economical load distribution problem with a non-smooth fuel price function.

DISCRETE PARTICLE SWARM OPTIMIZATION ALGORITHM BASED ON INFORMATION SHARING MECHANISM

Qinghe Xu; Noppadol Amdee, Adisak Sangsongfa — Wed, 25 Dec 2024 00:00:00 +0700

To better solve NP-complete problems, this paper proposes a Discrete Particle Swarm Optimization algorithm based on an Information Sharing Mechanism (ISM-DPSO). The algorithm uses a mechanism of sharing the pheromone of the ant colony algorithm to update particles; the particle swarm threshold function application is initialized. At the same time, to enhance the algorithm's global search ability, a particle swarm is initialized at a certain probability, and on this basis, using a nonlinear dynamic adjusting pheromone persistent rate strategy to guide the information memory. The proposed algorithm is applied to the knapsack problem with single constraints and the vehicle cargo loading problem with multiple constraints, and the optimization results are compared with the basic discrete particle swarm optimization algorithm (DPSO). The experimental results show that the ISM-DPSO algorithm outperforms the DPSO algorithm in terms of both the optimal value and the algorithm's fitted value, and the search results are superior to those of the DPSO algorithm.

การศึกษาเปรียบเทียบสมรรถนะระบบส่งกำลังในยานยนต์ไฟฟ้าดัดแปลง

ภักดี สิทธิฤทธิ์กวิน; กาจ อิ่มบุญอาบ — Wed, 25 Dec 2024 00:00:00 +0700

The objective of this research was to study the design of a powertrain system for electric vehicles using two different configurations of electric motors: the first configuration directly connects the electric motor to the rear differential without a gearbox, while the second configuration uses a gearbox between the electric motor and the rear differential. Subsequently, the study aimed to compare the driving performance of vehicles with both powertrain systems in terms of speed, acceleration rate, energy efficiency, payload weight, and hill climbing capability. Tests were conducted both on and off-campus under loaded conditions. After designing and calculations, it was found that the vehicle could effectively utilize an electric motor rated at 10 kW with an electrical voltage of 72 V. It employed a 72 V lithium iron phosphate (LiFePO4) battery with a capacity of 100 Ah. During operational tests with the gearbox-equipped powertrain system under full load (1,800 kg), the cycle driving type 1 (within the institute) better driving performance compared to the direct-drive system. Specifically, it achieved a driving range of 20.4 km, a speed of 37 km/hr, and consumed 5.4 kWh of energy.

ผลกระทบของเครื่องหมายจราจรบนพื้นทางไม่ชัดเจนต่อพฤติกรรมการขับขี่ กรณีศึกษา: งานก่อสร้างบนทางหลวงหมายเลข 35

พรณรงค์ เลื่อนเพ็ชร; อาทิตยา นิ่มอนงค์, สุหฤท มาศเมฆ, ภาวัต ไชยชาณวาทิก — Wed, 25 Dec 2024 00:00:00 +0700

The construction of the elevated motorway no.82 (M82) between Bang Khun Thian and Ban Paeo is currently underway, utilizing the existing central median of Rama II Road as a construction zone. While traffic marking modifications have been implemented to mitigate driver confusion, some areas are still under improvement, which has led to disruptions in traffic flow and altered driver behavior. The purpose of this study was to assess how driving behavior is affected by unclear road markings, especially in areas under construction. The study investigated the influence on traffic flow rate, vehicle speed, and lateral position by contrasting driving behavior in work zones on Highway 35 between the section with unclear road markings (km 32+700 Bangkok-bound) and a section with typical road markings (km 15+500 Bangkok-bound). Traffic flow rates were examined, and it was found that sections with typical road markings provided more significant traffic flow rates than sections with unclear road markings. Vehicle speed assessments revealed that vehicles in sections with typical road markings might travel at higher speeds, especially during off-peak periods. On the other hand, both sections' vehicle speed behavior was consistent during peak periods when traffic was heavy. In regards to the lane-changing behavior, the study demonstrated that there was a comparatively high rate of lane-changing in the section with unclear road markings during periods of low traffic density. The sections with unclear road markings also exhibited greater rates of lane crossing compared to the typical road markings section. The study's findings demonstrate how road markings influence drivers' behaviors once traveling in construction areas. The outcomes can be utilized to provide recommendations to coordinate construction activities in compliance with standards, facilitate efficient traffic control during construction, and reduce the risk of accidents.

ผลกระทบของแถบเส้นชะลอความเร็วรูปแบบต่าง ๆ ต่อการตื่นรู้ของผู้ขับขี่สำหรับประยุกต์ใช้บริเวณจุดตัดทางรถไฟ

อาทิตยา นิ่มอนงค์; พรณรงค์ เลื่อนเพ็ชร — Wed, 25 Dec 2024 00:00:00 +0700

The aim of this study is to evaluate the noise and vibration level in the vehicle cockpit, while moving through the designed rumble strip. The motorcycle, passenger car, pick-up truck and heavy truck are selected as test vehicles. In order to assess the impact of driver awareness, it is considered the difference in noise and vibrations level within the cockpit while moving through the rumble strip. The results concluded that the noise level inside a cockpit, while the vehicle is moving through a rumble strip, increases according to the speed of the vehicle. On the other hand, the vibration level inside a cockpit tends to decrease, corresponding to the movement velocity. Taking into account the appropriate design for the rumble strip, each vehicle type is inconsistent. We found that the most appropriate rumble strip design for motorcycles is 10 cm wide and 0.3 cm thick, with 25 cm spacing between the stripes. Passenger cars are also 10 cm wide but 0.6 cm thick, and the spacing between the stripes remains 25 cm. The appropriate rumble strip design for pick-up trucks is the same as for passenger cars, but the spacing between the stripes is 50 cm. In the case of heavy trucks, the design is higher than others, with a width of 20 cm, a thickness of 0.6 cm, and a spacing of 50 cm between the stripes. The outcome enhances the advancement of knowledge in order to improve design requirements for ensuring safety at railway crossings, mitigating the likelihood of accidents, and optimizing the efficiency of the railway system.