![]() ![]() I prefer to send installed base and field reliability data to describe it, and ask questions, at least to see whether nonparametric, age-specific field reliability and failure rate function estimates, without life data, (from data required by GAAP) are good enough. ![]() Or would you like a constant failure rate = 1/MTBF? Ships and returns counts are statistically sufficient to make nonparametric estimates of age-specific field reliability and failure rate functions for products and their parts.įor parts, you need BoMs to convert product installed base into part installed base using the gozinto matrix of parts per product or next assembly.ĭo I want to buy a mainframe computer or a cloud major service db, AI data-mining software, and reliability statistics programs, and employ many people tediously keeping records, making data entries, getting bored, and entering errors and learning field reliability only for tracked parts using possibly incorrect assumptions built into the reliability software?ĭo you need help justifying assumptions built into reliability statistical software? See How to Make Data Fit Weibull? "Verification and Validation of Alternative Facts." At least 3 Oracle-based service dbs do it by part name, although they don't distinguish whether multiple failures of same part name were first failure of second part or second failure of first part. The NIH and CDC require "Universal Device Identifier" for all lFDA act 201(h) medical devices.Īutomotive OEMs track using under warranty. ![]() The FAA requires tracking of ~75 safety-critical system by tail number and serial number. Yes, field reliability is fundamental to our business and to our suppliers' and our customers' businesses.ĭo I have to track products and parts by name and serial number to get their ages-at-failures and survivors' age? This a pseudo-program that implements a flowchart.ĭo I want to know my products' and parts' age-specific field reliability? ![]()
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