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Traditionally, reliability assessment of devices has been based on (accelerated) life tests. However, for highly reliable products, little information about reliability is provided by life tests in which few or no failures are typically observed. Since most failures arise from a degradation mechanism at work for which there are characteristics that degrade(More)
Sensory evaluations to determine the shelf life of food products are routinely conducted in food experimentation. In such experiments, trainned pan-elists are asked to judge food attributes by reference to a scale of numbers (scores varying from 0 to 6 for example). The " failure time " associated to a product unit under test is usually defined as the time(More)
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