Split Spectrum Processing of Backscattered Rayleigh Wave Signals to Improve Detectability of Fatigue Microcracks / MT. Resch, P. Karpur
- Conference Author:
- Cyclic Deformation, Fracture, and Nondestructive Evaluation of Advanced Materials (1990 : San Antonio, Texas)
- Physical Description:
- 1 online resource (11 pages) : illustrations, figures, tables
- Additional Creators:
- Karpur, P., Resch, MT., American Society for Testing and Materials, and ASTM International
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- A surface acoustic wave nondestructive evaluation technique was used to detect the initiation of surface microcracks in highly stressed regions of hourglass shaped 2024-T6 alloy aluminum specimens during fatigue cycling. Contacting wedge transducers were used to excite the incident waves and to detect the reflected wave signals. The effectiveness of a split spectrum processing algorithm to separate specular reflections of isolated cracks from nonspecular reflections of microstructural features in the scattering field was demonstrated.
- Dates of Publication and/or Sequential Designation:
- Volume 1992, Issue 1157 (January 1992)
- Composite materials¿̐ư—Fatigue¿̐ư—Congresses
- Nondestructive testing¿̐ư—Congresses
- Automated crack size measurement
- Automated testing technique
- Crack initiation detection
- Fatigue microcrack initiation
- Minimum detectable crack size
- Nondestructive testing
- Rayleigh wave
- Split spectrum processing
- Surface acoustic wave
- Ultrasonic scattering
- 9780803152120 (e-ISBN)
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 27.
- 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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Also available in PDF edition.
- Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1992. 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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