PD ISO/TR 19972-1:2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Units of measurement and symbols
5 Reliability concept
6 Means for determining reliability
7 Procedures for analysing a design concept
8 Procedures for laboratory testing to failure or
   suspension
9 Procedures for collecting field data
10 Procedure for a substantiation test
Annex A (informative) - Example calculation for analysing
        a design concept
Annex B (informative) - Calculation examples for laboratory
        test to failure data analysis
Annex C (informative) - Example calculation for collecting
        field data
Annex D (informative) - Equation development and example
        calculations for substantiation testing
Annex E (informative) - Reference material
Bibliography

Specifies a means for determining the reliability of hydraulic fluid power components using: a) estimates from a design analysis; b) analysis of laboratory testing to failure or suspension; c) analysis of field data; d) analysis of a substantiation test.

Thispart of ISO/TR19972 provides a means for determining the reliability of hydraulic fluid power components using: estimates from a design analysis; analysis of laboratory testing to failure or suspension; analysis of field data; analysis of a substantiation test. These methods apply to the first failures without repairs, but exclude certain infant mortality failures. Specific component test procedures and exclusions will be provided in subsequent parts of ISO/TR19972. This part of ISO/TR19972 also provides calculation methods, reporting descriptions and examples of reliability calculations.