Profiles of Fatigue Damage in Graphite/Epoxy Composites from Ultrasonic Transmission Power Spectra / JH. Cantrell, WP. Winfree, JS. Heyman
- Conference Author
- Recent Advances in Composites in the United States and Japan (1983 : Hampton, Virginia)
- Physical Description
- 1 online resource (10 pages) : illustrations, figures, tables
- Additional Creators
- Cantrell, JH., Heyman, JS., Winfree, WP., American Society for Testing and Materials, and ASTM International
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- Subscription required for access to full text.
License restrictions may limit access. - Summary
- Early fatigue damage in non-unidirectional multi-ply graphite/epoxy composites is manifested by a distribution of cracks and disbonds through the bulk of the material. Such damage is subtle and is difficult to detect with conventional ultrasonic technology. Consequently, a new ultrasonic measurement technique called phase-insensitive tone-burst spectroscopy has been developed. The new technique eliminates problems associated with phase cancellation and pulse shape artifacts inherent to conventional broadband ultrasonic spectral measurement systems and produces clean spectral information irrespective of specimen inhomogeneity or irregularities in surface geometry. Application of the new technique to measurements of graphite/epoxy composites has yielded frequency-domain profiles that show distinct differences in ultrasonic attenuation, attenuation slope, and velocity for each specimen experiencing a different level of fatigue damage.
- Dates of Publication and/or Sequential Designation
- Volume 1985, Issue 864 (January 1985)
- Subject(s)
- Composite materials—United States—Congresses
- Composite materials
- Acoustoelectric transducer
- Damage mechanisms
- Fatigue
- Graphite/epoxy composites
- Nondestructive testing
- Phase cancellation
- Pulse shape artifacts
- Tone-burst spectroscopy
- Ultrasonic waves—Attenuation
- Ultrasonic frequency analysis
- Ultrasonic waves—Speed
- Ultrasonics
- Other Subject(s)
- ISBN
- 9780803149298 (e-ISBN)
9780803104365
0803104367 - Digital File Characteristics
- text file PDF
- Bibliography Note
- Includes bibliographical references 14.
- Other Forms
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Also available in PDF edition. - Reproduction Note
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1985. 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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