American Journal of Engineering , Mechanics and Architecture (2993-2637)

Study, Design and Improve Production Line Layout using Material Flows

Amenah Hamzah Abdulhussein, Hadeel Abdul Hassan Rahayf, Hadeel Raheem Jasim — Thu, 07 Nov 2024 00:00:00 -0500

Companies search for production bottlenecks in an effort to get a competitive edge in the market. Automated production lines must be introduced and innovated for reasons related to productivity, quality, and manpower shortages. A production line is essentially defined as a system of accuracy, fluidity, and speed. New technologies have also prompted manufacturing lines to continually innovate and speed up, this article discusses innovation and addresses the challenge of creating a whole new layout for a new manufacturing line in the food business. This research aimed to develop the best possible production line arrangement in pre-selected manufacturing regions. Making the best possible use of the area allotted for production is crucial for every modern business.

Improving Power System Performance by Speed Regulation and PID Controller

Hayder H. Enawi, Abeer Abd Alhameed Mahmood, Ali Talib Jawad — Mon, 11 Nov 2024 00:00:00 -0500

There are many techniques can be adopted for improving power system performance. This is because the difference between generated and required powers. In general, this difference causes frequency deviation in all electrical network. Therefore, most of the scientists invented some techniques which help in controlling frequency of electrical models. Changing speed regulation method and applying PID controller are some these techniques. Therefore, this paper highlights these two mechanisms. First technique is speed regulation which will be changed in four values. These values are lower, equal, and higher than critical speed regulation (Rcr). Speed regulation changes tested model from unstable situation to stable with suitable response. However, steady state frequency deviation and power losses remain continuously. Therefore, second technique is added. It is applying PID controller. Similarly, the gains PID controller are varied three times. Practical characteristics of the model are demonstrated. They show a clear enhancing in different features such as rising time, settling time, peak time, and peak value. PID controller helps largely in melting continuous frequency drop and power losses gradually. In fact, the model of suggested system is designed by MATLAB program. In brief, speed regulation, PID controller are main techniques in keeping frequency of power systems in normal values. This supports efficiently in avoiding numerous electrical disturbances.

An Intelligent Device With A Neural Network That Controls The Moisture Content of Bulk Materials

Shohrux Narzullayev — Mon, 04 Nov 2024 00:00:00 -0500

The article uses neural network technology for an intelligent measurement device that includes a database, knowledge base, and other blocks. The working principle, functional scheme and training algorithm of the intelligent measuring device have been developed based on neural networks. Temperature, density, and other uncertain parameters that affect the accuracy of the measuring device and the moisture content of the scattering materials are taken as control objects.

3D Printed Wearable Apparel Products and Consumer Perceptions

Mon, 11 Nov 2024 00:00:00 -0500

In this article, consumer requirements for clothes printed on a 3D printer are studied. n this, the philosophies of the clothes created by 3D printers of different designers were compared and the theory of offering them to consumers was developed.

Retrofitting of a Deteriorated Bridge Girder using CFRP Laminates

Safa Myayad Naji — Tue, 12 Nov 2024 00:00:00 -0500

In this study, the use of Carbon Fiber Reinforced Polymer (CFRP) laminates is investigated to strengthen old bridge girders. These girders weaken over time due to wear and environmental effects. CFRP offers a lightweight, strong reinforcement solution. The research investigates various bonding methods and laminate arrangements, testing the mechanical performance post-retrofitting effects. The results highlight the practical benefits of using CFRP, such as its ability to enhance stiffness and load capacity. Moreover, it is a cost-effective choice that minimizes traffic disruptions for older bridge systems.

Development of a Secure Blockchain-Based System for Medical Certificate Generation and Verification

R. Regin, S. Suman Rajest, Shynu T — Wed, 13 Nov 2024 00:00:00 -0500

The healthcare industry’s growing reliance on electronic medical records (EMRs) brings challenges like fraud, tampering, and unauthorized access. Blockchain technology, with its security and immutability, offers a robust solution to these issues. This project introduces a blockchain-based medical certificate generator to securely store and verify medical certificates. The system enables authorized healthcare providers to issue tamper-proof certificates that can be easily verified by patients, insurance companies, and other stakeholders. Additionally, it offers a transparent audit trail for all certificate transactions, ensuring trust and accountability. The proposed system has three core components: a smart contract, a dedicated blockchain network, and a web application. The smart contract manages the storage, issuance, and verification of certificates on the blockchain. The dedicated blockchain network guarantees the security and immutability of these records, preventing unauthorized changes. The web application offers a user-friendly interface for both healthcare providers and patients, facilitating seamless interaction with the system. This approach not only strengthens the security of medical certificates but also simplifies the verification process, reducing the risk of fraudulent documents and enhancing the integrity of digital health data.

Product Characteristics and Qualities

Fri, 15 Nov 2024 00:00:00 -0500

In this article, special attention is paid to the concept of product quality, as well as its characteristics. Classification of quality indicators is given. Conclusions are made about the need to classify and study these indicators. Man comes into "possession of quality" in practical activity, consuming or using the corresponding products or services. For this reason, it is accepted that the starting point in the definition of quality is the value in use, which is the set of attributes that make a specific product useful to man.

Selection of Hydro Power Plant (Micro HPP) Drives for Natural Water Flows

Khakimov O'tkirbek Akramovich, Oktamov Sardor Makhmudjonovich — Fri, 15 Nov 2024 00:00:00 -0500

Currently, there is a growing demand worldwide for the use of hydro units with simple designs, compact sizes, high efficiency, and minimal environmental impact in electricity production. As with all types of machines, mechanical transmissions play a crucial role in ensuring high efficiency in the design of hydro units. This article presents several calculation schemes for selecting drives for hydromachines designed for natural water flows and recommends a rational drive design.

Analysis of Regulatory Parameters of Fuel Consumption by Gasoline Engines

Toxirjon Jalolov, Shuxratjon Imomkulov — Wed, 20 Nov 2024 00:00:00 -0500

All known automotive concerns and institutes specialized in ICE problems have worked to identify the relationship between the compression ratio of ICE and its efficiency and to investigate the nature of thermodynamic processes taking place in ICE.

Numerous experiments have also been carried out to increase the compression ratio of ICE. But these works had a negative result. Building on this negative result, ICE theory adopted, as axioms, claims that the compression ratio of a gasoline engine cannot be higher than 14. That the most effective compression ratio of the diesel internal combustion engine is in the region 17-23, and at the compression ratio 40 it becomes zero. Experts and theorists were so established in the correctness of these provisions that at this stage the slightest attempt to question them caused a sharp reaction.

Compression Pressure Measurements, Starting and Stopping of an Ultra-High Compression Ratio Gasoline Engine

Toxirjon Jalolov, Shuxratjon Imomkulov — Wed, 20 Nov 2024 00:00:00 -0500

As the As the automobile industry develops and the population increases, the demand for it increases. Therefore, reducing the fuel problem and environmental pollution remains one of the pressing issues. All known automobile concerns and institutions specializing in ICE problems are trying to solve them by means of a turbo device to improve the ICE. This makes the design structure of the car engine complex. It is necessary to simplify the car engine for long-term high-quality operation and increased fuel efficiency. The solution to these problems can be found by increasing the compression ratio of the engine. Currently, some research is being conducted to increase the compression ratio of internal combustion engines.