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Academic enquiry into the product lifetimes of electrical and electronic equipment was undertaken in 2000 by Cooper and Mayers [21] who conducted household interviews and focus groups to establish the age at discard (actual product lifetime) and expected lifetimes for 17 products. Since this study, work has been undertaken by other academics ...
In economics and industrial design, planned obsolescence (also called built-in obsolescence or premature obsolescence) is the concept of policies planning or designing a product with an artificially limited useful life or a purposely frail design, so that it becomes obsolete after a certain predetermined period of time upon which it ...
Given a component database calibrated with field failure data that is reasonably accurate, [1] the method can predict device level failure rate per failure mode, useful life, automatic diagnostic effectiveness, and latent fault test effectiveness for a given application.
A decreasing failure rate describes cases where early-life failures are common [7] and corresponds to the situation where () is a decreasing function. This can describe, for example, the period of infant mortality in humans, or the early failure of a transistors due to manufacturing defects.
Capital expenditures are the funds used to acquire or upgrade a company's fixed assets, such as expenditures towards property, plant, or equipment (PP&E). [3] In the case when a capital expenditure constitutes a major financial decision for a company, the expenditure must be formalized at an annual shareholders meeting or a special meeting of the Board of Directors.
The difference between service life and predicted life is most clear when considering mission time and reliability in comparison to MTBF and service life. For example, a missile system can have a mission time of less than one minute, service life of 20 years, active MTBF of 20 minutes, dormant MTBF of 50 years, and reliability of 99.9999%.
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