Sensing Crack Nucleation and Growth in Hard Alpha Defects Embedded in Ti-6A1-4V Alloy / P. C. McKeighan, A. E. Nicholls, L. C. Perocchi, R. C. McClung
- Conference Author:
- Nontraditional Methods of Sensing Stress, Strain, and Damage in Materials and Structures (1999 : Kansas City, Missouri)
- Physical Description:
- 1 online resource (21 pages) : illustrations, figures, tables
- Additional Creators:
- Perocchi, L. C., McClung, R. C., McKeighan, P. C., Nicholls, A. E., American Society for Testing and Materials, and ASTM International
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- The cracking behavior of nitrogen-rich hard alpha anomalies in Ti-6A1-4V is examined for partially validating predictive approaches used in life management of high energy rotors. Both synthetic and naturally occurring anomalies were subjected to static and fatigue loading. An internal defect, completely surrounded by Ti-6-4 material, was much more resistant to cracking when contrasted to a surface-connected defect. Furthermore, acoustic emission and electric potential drop methods were effective indicators of cracking, especially progression from the defect and into the base metal. Consistent signals were observed for each type of transducer, although the acoustic emission signals were more robust from an interpretative standpoint. Analysis of the acoustic emission data provided good quantitative estimates of crack size.
- Dates of Publication and/or Sequential Designation:
- Volume 2001, Issue 1323 (January 2001)
- Other Subject(s):
- 9780803162112 (e-ISBN)
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 13.
- Other Forms:
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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- Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 2001. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details:
- Mode of access: World Wide Web.
- Source of Acquisition:
- ASTM International PDF Purchase price USD25.
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