Maintainability is the ability of an item to be retained in or restored to specified conditions when maintenance action is performed by personnel having specified skill levels and using prescribed procedures and resources at each prescribed level of maintenance and repair.
These charts make use of the T 2 statistic to combine information from the dispersion and mean of several variables.
Existence of an interaction effect means that the factors can not be changed independently of each other.
Inserting formulas: the advantage with this software is the fact that it also supports importing or inserting predefined formulas.
If the primary unit were to fail, a sensor could detect the failure and a standby unit could be switched in to allow the system to continue to perform the function.
Define and use basic probability concepts such as independence, mutually exclusive, complementary and conditional probability, joint occurrence of events, etc.
Some of these stress levels may exceed the limits set by the customer requirements and stress the product beyond the levels expected in normal use.
Reliability tests could be classified according to the way the tests are conducted and the type of results that are recorded.
The null hypothesis can never be proved true, but it can be shown (with specified risks of error) to be untrue; that is, that a difference exists between the populations.
In the context of experimental design, resolution refers to the level of confounding in a fractional factorial design.
If the experiment is testing the effect of various agricultural factors on crop production, a plot of ground is divided into the required number of subplots and all runs and replicates can be conducted simultaneously.
This indicates that the reliability engineer's responsibilities are not limited to crunching numbers and producing good analyses but include the promotion of product reliability and safety.
Here, you are provided with the formula that is to be used in area calculator, volume calculator, and surface area calculator.
G1100 is furnished with a committed onboard image taking care of chip, making it efficient in maintaining high scanning levels although numerous picture handling abilities are allowed.
Note: although the useful life stage is sometimes referred to as the random causes stage, random causes are generally present during all three stages.
If a set of failure modes is grouped in the upper right corner, those should be attacked with highest priority.
Reliability engineers are interested in process control because the reliability of a product is dependent on the process that produced it.
Receiving inspection of a sample of 1000 items indicates that nine of the items do not conform to a given specification.
Sequential testing results in a decision to accept compliance, reject compliance, or to continue testing at every value of cumulative test time.
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