期刊全稱 | Acousto-Ultrasonics | 期刊簡(jiǎn)稱 | Theory and Applicati | 影響因子2023 | John C. Duke | 視頻video | http://file.papertrans.cn/145/144047/144047.mp4 | 圖書封面 |  | 影響因子 | Finding and slzmg cracks and other crack-like discontinuities has been the center of attention for scientists and engineers developing and using nondestructive evaluation (NDE) technology. However, with advanced mate- rials being "engineered" and used in critical structural components, a new for NDE has emerged. Whereas many traditional engineering materi- challenge als fail due to the initiation and self-similar propagation of a crack, reinforced composite materials degrade and fail in a manner more analogously to the collapse of a structure. Consequently the NDE of such materials involves assessing the combined effect of the material‘s damaged condition rather than identifying and sizing single critical imperfection. In 1979 Alex Vary, seeking to address the challenge confronting the NDE of advanced fiber reinforced composite materials began work on a new method of materials characterization. Focusing on the problem of evaluating graphite fiber reinforcedl epoxy laminated plates; Vary used a piezoelectric transducer to excite a mechanical disturbance in a plate and, with a sensi- tive piezoelectric transducer monitored the disturbance on the same surface of the plate. (Placing th | Pindex | Book 1988 |
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