BS ISO 21153:2018
$142.49
Corrosion of metals and alloys. Measurement of environmentally assisted small crack growth rate
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 28 |
This document specifies a method for determining the growth rate of small surface cracks in an aqueous environment (including atmospheric exposure) based on measurement of the change in size of the crack with exposure time.
The methodology can be applied to stress corrosion and corrosion fatigue crack propagation.
It also describes the varied methodologies for the generation of crack precursors including accelerated generation of single pits.
Industries for whom this document is relevant include power generation (including nuclear), oil and gas, aerospace and automotive.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Principle 5 Specimen type and preparation |
| 11 | 6 Crack precursor generation 6.1 Corrosion pits |
| 13 | 6.2 Mechanical notching 6.3 FIB milling |
| 14 | 6.4 Laser ablation 6.5 Electric discharge machining 7 Crack-size monitoring 7.1 Optical |
| 15 | 7.2 Electrical resistance techniques |
| 17 | 7.3 Calibration of crack measurement method 8 Precracking |
| 18 | 9 Test apparatus 10 Environmental considerations 11 Test procedure |
| 19 | 12 Data analysis 12.1 Estimating the crack depth 12.1.1 General |
| 20 | 12.1.2 Surface breaking crack with depth at least that of the precursor 12.1.3 Surface breaking crack with depth less than that of the precursor |
| 21 | 12.1.4 Crack emerging at base of precursor but not surface-breaking 12.2 Calculating the small crack growth rate |
| 22 | 13 Mechanical driving force |
| 23 | 14 Test report |
| 25 | Annex A (informative) Potential drop technique for crack monitoring |
| 26 | Bibliography |
