Md Shahriar Jahan Hossain

Northwestern State University | NSU · Industrial Engineering Technology

This paper is an extension of a detailed research which is primarily conducted to make an overall improvement of a steel pipe manufacturing system. In order to achieve that goal, four distinct problems namely, buffer capacity, tool magazine size and reload timing, pipe sizing, and inspection and rework problems, in the system are solved optimally....

The performance of a continuous steel pipe manufacturing system can be improved by solving different operational problems in the system. One of the important problems involves determination of buffer capacity of the coil accumulator which acts as an inter-stage buffer storage of steel strip that slowly feeds into the rolling benders to form the ste...

The paper develops a mathematical model for integrated production and maintenance scheduling to optimize backorder quantity. It is assumed that at the end of each uptime, deterministic preventive maintenance is scheduled to incur backlog to reduce inventory carrying cost. The overall incurred cost of the proposed mathematical model is derived and u...

In a vendor-buyer cooperative inventory system several factors including planned shortage, controlled sales price, shipment size and frequency affect the total profit. Though a larger order size reduces the number of shipments, it conversely increases the lead time and transportation cost. On the other hand, planned shortage of items reduces the bu...

In die manufacturing industries surface roughness is considered as a vital quality characteristic in order to retain the consumers' satisfaction. On the other hand, manufacturers want to minimize the machining time which eventually reduces their cost. This research deals with an optimization problem to minimize the machining time (T) for end millin...

A multistage flexible flowline is considered in this research to make optimal decisions on inspection and rework stations assignment. The defective items detected at the inspection station(s) are either scrapped or reworked on/off-line. The number and location(s) of inspection station(s) affect the throughput rate and defect detection horizon. Thes...

In a continuous metal pipe production system, various type of production defects are found to occur. In general, the defects occur randomly following Poisson distributions. The defective spots can be reworked or the defective portions can be scrapped based on their relevant cost. However, these two alternatives add extra costs to production. Beside...

This paper presents an integrated inventory model for a single-vendor and single-buyer where lead-time is a stochastic variable with general distribution function. The vendor delivers goods at a fixed lot size to the buyer who has a constant demand rate. Storage is permitted on both parties, but a penalty cost is assessed when the vendor delivers t...

The research presents an integrated inventory model for a single-vendor-single-buyer consignment stock policy where demand rate and lead-time are constant. The vendor controls the buyer’s warehouse, whereas the stock of all finished goods is owned by the vendor. The vendor delivers finished goods to the buyer at a fixed lot size. Shortage is no...

Measuring the Overall Equipment Effectiveness (OEE) of an engineering production system is essential for numerous purposes including scheduling, capacity estimation, and budgeting. During last few decades, several performance measurement techniques are developed from the basic OEE structure and are being implemented in different manufacturing indus...

In a manufacturing system the defective items detected at the inspection station, are generally scrapped or repaired at regular defect-creating workstation or at a dedicated repair station off the line. In this research a sewing line with an inspection station located at the end, is considered to make decisions concerning these issues. A unit cost...

The production rate and product quality are two vital concerns for any manufacturing industry. Number of defective items reduces production rate and increases unit production cost. Moreover, if nonconforming items reach to the customers then manufacturer’s goodwill may drastically go down. Thus, quality inspection is treated as an inherent part of...

Anthropometry is one of the most important parts of Ergonomics. It is necessary to consider the anthropometric measurements as well as to follow the ergonomic guidelines in designing any furniture in which people perform their regular activities. The purpose of this research was to develop a methodology in designing ergonomic furniture used by the...

Surface roughness is a quality index for machined surfaces. In this study an algorithm has been developed to determine the feasible solutions for cutting parameters in order to obtain desired surface roughness for three dimensional dies. Here the average surface roughness values for a commercial die material EN24 after ball end milling operation ha...

Surface roughness of dies is considered as a vital quality characteristic. In this study, average surface roughness for a die material H13 has been measured after ball end milling operation. A design of experiment was prepared with response surface methodology (RSM). Forty-nine experiments have been conducted varying six different cutting parameter...

Environmental awareness continues to rise, and customers of all types are realizing the importance of eco-friendly products which are essential to protect our planet. Eco-designer creates designs that are demanded by markets. Green design rules are needed to support the implementation of environmental features in the practical design situation. Gre...

Surface roughness is an index which determines the quality of machined products and is influenced by the cutting parameters. In this study the average surface roughness R a (value) for Aluminum after ball end milling operation has been measured. 84 experiments have been conducted varying cutter axis inclination angle (φ degree), spindle speed (S rp...

Surface roughness is an index which determines the quality of machined products. In this study the average surface roughness value (R a) for Aluminum after ball end milling operation has been measured. 84 experiments have been conducted varying cutter axis inclination angle (φ degree), spindle speed (S rpm), feed rate (f y mm/min), radial depth of...

Inventories in a factory acts like a buffer to avoid disruption in the production or assembly lines. In this work a fuzzy interface based system is developed to take inventory decisions like inventory level, reorder point, reorder quantity etc. Input variables were demand, stock quantity-on-hand, lead time and the price of the raw material. Here ou...

Surface roughness is an index which determines the quality of machined products and is influenced by the cutting parameters. In this study, the average surface roughness Ra (value) for aluminum after ball end milling operation has been measured. 84 experiments have been conducted using varying cutter axis inclination angle (φ degree), spindle speed...

High performance composites are currently being used in the marine, automotive, aerospace and defense industries. These industries demand materials with properties that are similar or better than conventional metals at fraction of the weight. Among different properties of materials required for designing products, effective material constant (Ez) i...

Environmental awareness continues to rise, and customers of all types are realizing the importance of eco-friendly products which are essential to protect our planet. Green design rules are needed to support the implementation of environmental features in the practical design situation. Green design or Design for Environment (DfE) is a field of pro...

A supply chain is an integrated manufacturing process wherein raw materials are converted into final products, then delivered to customers. Due to the complexity of supply chain nature, it is very difficult to measure its performance. In this study Supply Chain Operation Reference (SCOR) model has been used to measure supply chain performance of a...