By Harry Schwab Bryan Dodson
The appliance of sped up checking out concept is a tough proposition, but one who can lead to huge time and price reductions, in addition to expanding a product's priceless lifestyles. during this ebook, readers are uncovered to the most recent, such a lot useful wisdom to be had during this dynamic and significant self-discipline. The authors draw on their substantial adventure within the box to provide entire, insightful perspectives during this booklet. Contents contain: creation and evaluate of speeded up and reliability checking out; basics, versions and kit required for speeded up checking out; a variety of trying out equipment and real-world examples.
desk of Contents
2. chance basics
four. Parameter Estimation
five. speeded up try out Plans
6. speeded up trying out versions
7. Environmental rigidity Screening
eight. try apparatus equipment and functions
in regards to the Authors
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Extra info for Accelerated Testing - A Practitioner's Guide to Accelerated and Reliability Testing
What percentage of extrusions has a strength between 295 and 310? 7 The standard normal probability density function. 8 represents the probability of an extrusion being greater than 310. 8 represents the area under the standard normal distribution to the right of z = 2, which is the same as the probability of an extrusion being greater than 310. 0228. 0228. 9 represents the probability of an extrusion being less than 295. 9 represents the area under the standard normal distribution to the left of z = -1, which is the same as the probability of an extrusion being less than 295.
5) The mean of the Weibull distribution is equal to the characteristic life if the shape parameter is equal to 1. 5 shows the mean as a function of the shape parameter. 6. ( ( )) * The gamma function is available in Microsoft® Excel. The function is =EXP GAMMALN x . The function () () GAMMALN x returns the natural logarithm of the gamma function; the function EXP x transforms the expression into the gamma function. 5 The Weibull mean. 6 The Weibull variance. –38– D The reliability measure of many components is the mean time to fail.
4 demonstrates how the probability density function is used to compute probabilities. The area of the shaded region represents the probability of a single ﬁsh, drawn randomly from the population, having a length less than 185. 9%. 5 demonstrates the probability of the length of one randomly selected ﬁsh having a length greater than 220. 6 demonstrates the probability of the length of one randomly selected ﬁsh having a length greater than 205 and less than 215. Note that as the width of the interval decreases, the area, and thus the probability of the length falling in the interval, decreases.
Accelerated Testing - A Practitioner's Guide to Accelerated and Reliability Testing by Harry Schwab Bryan Dodson