Defect characteristics using automated fiber plasement

Automated fiber placement (AFP) is an advanced manufacturing method for composites, which is especially suitable for large-scale composite components. However, some manufacturing defects inevitably appear in the AFP process, which can affect the mechanical properties of composites. These defects are the main limitation of the technology and can be hard to categorize or define in many situations. This paper provides a thorough definition and classification of all AFP defects. This effort constitutes a comprehensive and extensive library relevant to AFP defects. The defects selected and defined in this work are based on understanding and experience from the manufacture and research of advanced composite structure. Keywords: automated fiber placement, manufacturing defects, mechanical properties, composites, manufactur

Automated fiber placement technology overview

In this paper automatic fiber placement method is presented. This literature reviews the entire AFP process from the design of the structure through inspection of the manufactured part to generate an overall understanding of the lifecycle of AFP manufacturing. Also, typical materials dedicated for AFP technology are presented. The advantages and limitations of various system configurations in terms of parts size, parts shape and composite materials are discussed. Keywords: fiber, technology, composite

Simulation of toolpaths and program verification of a CNC lathe machine tool

This paper presents the simulation and verification of programs created for the CNC Hitachi Seiki Seicos LIII lathe machine tool. The main purpose of program simulation and verification is to ensure the quality and accuracy of the cutting process, which can significantly improve production efficiency. In addition to defining the toolpath, simulation can perform linear and circular interpolation according to specific programs based on G - codes. Therefore, all the motions of the moving parts of the real lathe machine tool can be clearly visualized. The use of simulation is a good solution not only to precise the toolpath, but also verify the program and detect any possible collision between cutting tools and mobile components, before loading the program into the lathe machine tool and starting cutting processes. Keywords: manufacturing, machining, programming, codes, softwar

Analysis of an inventory management model in a manufacturing process based on material requirements planning (MRP)

Optimal inventory management is crucial for the efficient operation of businesses, as it accounts for over 50% of the total invested capital. Inadequate inventory management can lead to high costs and large profits. Modern inventory management models focus on quantity and time, rather than costs, aiming for smaller and more frequent purchases within the economical quantity of purchase and national transport. The material requirement planning (MRP) model is one such model, focusing on quantity and time rather than costs. This approach is essential for businesses to make informed decisions regarding inventory decisions and maintain a competitive edge in the market. Keywords – Inventory Management, Operation, Time, Costs, Material Requirement Planning (MRP) Mode

Forecasting and prediction by mean of Analytic Hierarchy Process (AHP) in the field of supply chains

Supply chain management is a critical aspect of modern businesses, with companies striving to optimize their operations for efficiency and profitability. Accurate forecasting and prediction play a pivotal role in achieving these objectives. The study investigates the use of the Analytic Hierarchy Process (AHP) as a robust decision-making tool in supply chain forecasting and prediction. The core of this study involves the development of an AHP-based forecasting and prediction framework tailored to the supply chain domain. AHP is a systematic approach that enables decision-makers to evaluate various forecasting models using a hierarchy of criteria, sub-criteria, and alternatives. The framework also enables the incorporation of expert opinions, historical data, and real-time information, ensuring a comprehensive and adaptable approach to forecasting. Case studies and empirical evidence are presented to demonstrate the effectiveness of the AHP-based framework in improving supply chain forecasting accuracy and decision-making. These examples showcase how AHP can assist in demand forecasting, inventory management, supplier selection, and other critical supply chain activities

Analysis of an inventory management model in a manufacturing process based on material requirements planning (MRP)

Optimal inventory management is crucial for the efficient operation of businesses, as it accounts for over 50% of the total invested capital. Inadequate inventory management can lead to high costs and large profits. Modern inventory management models focus on quantity and time, rather than costs, aiming for smaller and more frequent purchases within the economical quantity of purchase and national transport. The material requirement planning (MRP) model is one such model, focusing on quantity and time rather than costs. This approach is essential for businesses to make informed decisions regarding inventory decisions and maintain a competitive edge in the market. Keywords – Inventory Management, Operation, Time, Costs, Material Requirement Planning (MRP) Mode

Finete element analysis of stress of vehicles friction clutch diaphragm spring

A friction clutch is mechanical assemblies built between the engine and transmission, that with friction transfers torque from the driving part to the driven (working) part (engine gearbox and other transmission). A diaphragm spring is one of the key component of a clutch assembly. A diaphragm spring is piece to high stress concentration in driving condition, this is often the cause of cracks and crashes spring. The stress of a diaphragm spring is analyzed by finite element method, measurement of stress and performed compare to stress obtained by expressions on Almen-Laszlo

Finite element analysis of stress of vehicles friction cluch diaphragm

A friction clutch is mechanical assemblies built between the engine and transmission, that with friction transfers torque from the driving part to the driven (working) part (engine gearbox and other transmission). A diaphragm spring is one of the key component of a clutch assembly. A diaphragm spring is piece to high stress concentration in driving condition, this is often the cause of cracks and crashes spring. The stress of a diaphragm spring is analyzed by finite element method, measurement of stress and performed compare to stress obtained by expressions on Almen-Laszlo

Application of Sensors in Real Time Systems for Optimizing Industrial Processes in Chemical Facilities

An overview of automated industrial plant and its architecture has been discussed briefly in this paper. The content herein is very educative at introductory stage to concept of Industrial Automation and Informative about latest trends in Industrial Automation. Mineral processing and Chemical producers are building new plants need technologies that help them get the most from their assets, while also helping them minimize safety and quality risks. The ability to accurately measure valuable elements and minerals is critical for optimizing processes. Our emerging sensor technologies provide real-time results, opening up opportunities to make significant cost savings and increase mineral recovery rates

Experimental and numerical study of a flat-plate solar energy collector performance

The objective of the present work is to conduct a comparative analysis of fixed and moving flat-plate solar collectors’ performance. An experimental set-up installed on a location in Shtip (Republic of Macedonia), latitude 41o 45’ and longitude 22o 12’, consists of two flat plate solar collectors, the first one with a fixed surface tilted at 30о towards the South, and the other one equipped with dual-axis rotation system. An experimental programme is performed to investigate the effect of the sun tracking system implementation on the collector efficiency. The study also includes development of a 3-D mathematical model of the collectors system and extensive numerical simulation, based on the computational fluid dynamics (CFD) approach. The efficiency of the implemented system was confirmed by experimental verification, showing significant energy efficiency increase, compared to the immobile collector unit. The comparative analysis shows that there is a good agreement between the experimental and numerically predicted results for different running conditions, and the presented modelling approach can be used for further investigations, including more complex problems