Downloaded from https://www.everyspec.com AMCP 7040910 The techniques of mathematical statistics mit the printing of reliability status output are used extensively in rliability testing. reports. These techniques provide the tools that relate sample size, test duration, s-confidence levels, 4. Develop and standardize procedures for stress levels, and other factors, They are data accumulation and reduction. These discussed in Chapters 2 and 3, and in Part standard procedures must provide for the Six, Mathematical Appendix and Glossary.
collection of data, the recording of identify- in& information, environmental conditions, Chapter 4 will describe techniques and pro- operating hours or cycles, and hardware cedures which can be applied to reliability failures on each test performed. test planning and management to ensure a more efficient test program. 5. Be structured to make use of data recorded on failures that occur at times other than the reliability tests. 1.3 INTEGRATED DATA SYSTEM 6. Handle, process, and integrate all data An integrated data system can be used to obtained from testing, inspection, and failure provide project managers and engineers with trouble reporting.
These data can be used the data that they need in order to monitor for reliability analysis and reporting, assesa- the reliability achieved by the system and its ment of equipment readiness, and a variety component parts, If provided in a timely of other purposes. manner, this information can be used for effective planning, review, and control of 7. Maintain and update a computer data actions related to system reliability. The bank of accumulated reliability data, These data system ought to encompass the follow- data can be processed to produce reliability Ing characteristics:
status reports that present a summary of failure rates and reliability parameters for I, He a closed-loop system for collecting, components, equipments, and subsystems. analyzing, and recording all failures that These reports can be structured to list the occur during system development, troublesome items that are causing the most serious reliability difficulties. They can be 2. Provide data that can be used to esti- distributed to cognizant Army and contractor mate reliability and to indicate needed cor- engineers and managers. rective action.
All hardware failures should be recorded with information about the A detailed description of an integrated failed component, time of failure, cause of data system is presented In Chapter 5. failure, and other pertinent information, Chapters 6, 7, and 8 describe environmental testing, accelerated testing, and nondestructive 3. Develop computer programs that per- testing, respectively. REFERENCES I. MIL-STDI785, Reliability Program for 3. AR 702-3, Product Assurance: Army Systems and Equipment Development Materiel Reliability, Availability, and and Production. Maintainability (RAM). 2. AMCR 11-1, Research and Develop- 4. TR-7, Factors and Procedtres for Apply- ment, Systems Analysis.
ing MIL-STD-IOD Sampling Plans to i