ULTRASONICS AND CERAMIC COATINGS. Quarterly Progress Report No. 2 for July 1 to September 30, 1960

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The objectives of the program are to develop ultrasonic methods of determining ceramic-metal bond strength and uniformity. Promising results were obtained using simple scanning and display systems to detect simulated defects. Two different methods were tried, one using solid specimens with the crystals directly attached and the other using specimens immersed in a liquid couplant with the crystals held in precise parallelism with the specimen surfaces. Equally good results were obtained in either case. Further experiments using surface waves and coatings with lower ultrasonic absorption have indicated that the proposed surface wave technique might be useful for vaper-deposited coatings. The ... continued below

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Pages: 23

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Lawrie, W.E. October 31, 1961.

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Description

The objectives of the program are to develop ultrasonic methods of determining ceramic-metal bond strength and uniformity. Promising results were obtained using simple scanning and display systems to detect simulated defects. Two different methods were tried, one using solid specimens with the crystals directly attached and the other using specimens immersed in a liquid couplant with the crystals held in precise parallelism with the specimen surfaces. Equally good results were obtained in either case. Further experiments using surface waves and coatings with lower ultrasonic absorption have indicated that the proposed surface wave technique might be useful for vaper-deposited coatings. The experiments showed that the absorption of ultrasonic energy by ZrO/sub 2/ coating prevents the use of surface wave methods. Two simple systems were used to investigate the correlation between logarithmic decrement and bond condition. (W.L.H.)

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Pages: 23

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  • Other Information: Orig. Receipt Date: 31-DEC-61

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  • Report No.: ARF-6043-11
  • Grant Number: AF33(616)-6396
  • DOI: 10.2172/4107923 | External Link
  • Office of Scientific & Technical Information Report Number: 4107923
  • Archival Resource Key: ark:/67531/metadc865707

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  • October 31, 1961

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  • Sept. 16, 2016, 12:32 a.m.

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Lawrie, W.E. ULTRASONICS AND CERAMIC COATINGS. Quarterly Progress Report No. 2 for July 1 to September 30, 1960, report, October 31, 1961; United States. (digital.library.unt.edu/ark:/67531/metadc865707/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.