IJPAM: Volume 71, No. 1 (2011)
FOR PRODUCT LIFE CYCLE WITH GROWTH STAGE
AND DEFECTIVE ITEMS
Research Scholar
Bharathiar University
KGiSL Institute of Technology
Coimbatore, Tamil Nadu, 641 035, INDIA
Abstract. A product life cycle is the life span of a product which the period begins
with the initial product specification and ends with the withdrawal from the
market of both the product and its support. A product's life cycle can be
divided into several stages characterized by the revenue generated by the
product. This paper investigates the effect of quality cost on inventory
control policies in a manufacturing system during the product life cycle
which consists of introduction, growth and decline stages. The defective
rate is considered as a variable of known proportions. An inventory model in
order to minimize the total cost of inventory and integrated with cost of
quality is developed. The relevant model is built, solved. Necessary and
sufficient conditions for a unique and global optimal solution are derived.
An illustrative example is provided and numerically verified. This
seems to be the first time where such a inventory model for product life
cycle is mathematically treated and numerically verified. The validation of
result in this model was coded in Microsoft Visual Basic 6.0.
Received: March 18, 2011
AMS Subject Classification: --???--
Key Words and Phrases: inventory, product life cycle, cost of quality, defective items and production and demand
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Source: International Journal of Pure and Applied Mathematics
ISSN printed version: 1311-8080
ISSN on-line version: 1314-3395
Year: 2011
Volume: 71
Issue: 1