AE behavior and fractography during fatigue crack propagation in SWS 490B steel
- 1. Korea Research Institute of Standards and Science, Taejon (Korea, Republic of)
Description
The objective of this study was to investigate the effect of AE activities during fatigue test. Laboratory experiment was carried out to identify AE characteristics of fatigue cracks for compact tension specimen. The relationship between a stress intensity factor and AE signals activity was discussed. From the experimental results, the features of specific parameters such as the length of crack growth, the AE energy and the AE peak amplitude, showed similar trend in their increase as the stress intensity factor increased. The fracture surface of test specimens revealed both intergranular fracture and transgranular fracture. Size and density of slip band were varied as the stress intensity factor increased and AE activities were different according to the slip band shape
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Institute of Metals and Materials
- Journal Volume
- 40
- Journal Issue
- 8
- Series
- 11 refs, 9 figs, 1 tab
- Journal Page Range
- p. 853-860
- ISSN
- 0253-3847
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 36053838
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ACOUSTIC EMISSION TESTING; CRACK PROPAGATION; CRACKS; FATIGUE; FRACTOGRAPHY; FRACTURES; INTERGRANULAR CORROSION; SLIP; STEELS
- Descriptors DEC
- ACOUSTIC TESTING; ALLOYS; CARBON ADDITIONS; CHEMICAL REACTIONS; CORROSION; FAILURES; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS TESTING; MECHANICAL PROPERTIES; NONDESTRUCTIVE TESTING; TESTING; TRANSITION ELEMENT ALLOYS