Weibull++ Warranty Folio Data DateFailed

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Reliability Web Notes

Warranty Folio Data Dates of Failure
Weibull++

Another common way for reporting field information is to enter a date and quantity of sales or shipments, Quantity In-Service Data, and the date and quantity of returns, Quantity Returned Data, as illustrated in the following tables.

Quality In-Service Data
Quantitychart.png
Quantity Returned Data
Quantitydates.png


Note that in order to identify which lot the unit comes from, a failure is identified by a return date and the date of when it was put in service. The date that the unit went into service is then associated with the lot going into service during that time period. Lots can be used with the optional ID column

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