نتایج جستجو برای: warranty cost

تعداد نتایج: 390694  

Journal: :Communications for Statistical Applications and Methods 2005

2013
M. S. Kadyan Jitender Kumar A. K. Lal S. S. Bhatia Xiaoning Jin Lin Li

In this paper a stochastic model for a single unit repairable system with Preventive Maintenance (PM) under warranty is analyzed in details by using supplementary variable technique. The cost of repair during warranty is born by the manufacturers, but warranty does not apply to product failure due to user-induced damage such as cracked screen or cracked casing, accident, misuse, physical damage...

Journal: :مدیریت صنعتی 0
مهدی نصراللهی دانشجوی دکتری مدیریت تحقیق در عملیات، دانشگاه تهران، تهران، ایران عزت ا... اصغری زاده دانشیار دانشکدۀ مدیریت دانشگاه تهران تهران، ایران احمد جعفر نژاد استاد دانشکدۀ مدیریت دانشگاه تهران تهران، ایران محمد علی صنیعی منفرد دانشیار دانشگاه الزهرا، تهران، ایران

in today’s fiercely competitive products market, product warranty has started playing an important role. currently, a large number of products are being sold with warranty policies in the form of free replacement warranty, pro-rata warranty, and combined warranty policies. pro-rata warranties are relatively a complex concept. the modeling of failures during the warranty period and the costs for...

Journal: :Rel. Eng. & Sys. Safety 2007
Shaomin Wu Derek Clements-Croome

Many systems might have a long time dormant period, during which the systems are not operated. For example, most building services products are installed while a building is constructed, but they are not operated until the building is commissioned. Warranty terms for such products may cover the time starting from their installation times to the end of their warranty periods. Prior to the commis...

2013

Amongst the many approaches in modelling deteriorating systems with product warranty, renewing warranty has found favor in designing such systems. In this chapter our attention is focused on renewing warranty policy modelled using quasi-renewal inter repair times. With the basic classification of warranty policies viewed in the previous chapters, the warranties are further categorized as renewi...

2002
A. Kleyner P. Sandborn

This paper addresses the effect of twodimensional warranty policies on the procedure for forecasting the cost of unreliability. Automotive warranties are characterized by age or time in service and vehicle usage mileage. This paper presents a model where the usage time is a primary variable and the mileage accumulation is estimated from field return data. At each time interval the probability o...

Journal: :Management Science 2008
Wei Huang Vidyadhar G. Kulkarni Jayashankar M. Swaminathan

I this paper, we study a firm that faces demand from two sources: demand for new items and demand to replace failed items under warranty. We model this setting as a multiperiod single-product inventory problem where the demands for new items in different periods are independent and the demands for replacing failed items depend on the number and ages of the items under warranty. We consider back...

2005
Peter S. Buczkowski Mark E. Hartmann Vidyadhar G. Kulkarni

We consider the problem of outsourcing warranty repairs to outside vendors when items have priorities in service. The manufacturer has a contract with a fixed number of repair vendors. The manufacturer pays a fixed fee for each repair done by a vendor which is independent of the repair type and priority class but depends on the vendor. There are a fixed number of items under warranty, and each ...

Ammar Y. Alqahtani Surendra M. Gupta

In today’s global environment, technology is constantly evolving. Being able to stay up-to-date with the very latest technological advances can be extremely hard to accomplish. As a result of these changes and developments in technology, which often come unexpectedly, consumers are frequently tempted to update their devices to the very latest model. The result is that the life cycle of a produc...

2000
Nat Jack Frank Van der Duyn Schouten

When a repairable product is sold with a free replacement warranty, the manufacturer has the option of rectifying a failure by either repairing the failed item or replacing it with a new one. In this paper, repairs are assumed to be minimal in the sense that they leave the product in exactly the same condition it was in prior to failure. We discuss the form of the optimal repair}replace strateg...

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