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13 Result(s)

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  1. No Access

    Article

    Evaluation of diffusion bonds formed between superplastic sheet materials

    Diffusion bonds produced in microduplex titanium and stainless steel sheet materials for various bonding conditions have been evaluated using a range of techniques. These include light and scanning electron mi...

    Z. C. Wang, N. Ridley, G. W. Lorimer, D. Knauss… in Journal of Materials Science (1996)

  2. No Access

    Article

    Quantitative acoustic microscopy of anodized and coated aluminium at frequencies up to 1 GHz

    Quantitative acoustic microscopy (QAM) has been used to measure surface wave velocities on polished, anodized and coated aluminium substrates, these materials being representative of those used for adhesive bo...

    Z. Sklar, G. A. D. Briggs, P. Cawley, A. J. Kinloch in Journal of Materials Science (1995)

  3. No Access

    Article

    Depth measurement of short cracks with an acoustic microscope

    The depth of short cracks (70–200 μm surface length) has been measured with an acoustic microscope by utilizing the nondestructive time-of-flight diffraction technique (TOFD). The depth measurements were first...

    D. Knauss, D. D. Bennink, T. Zhai, G. A. D. Briggs… in Journal of Materials Science (1993)

  4. No Access

    Article

    Acoustic microscopy of ceramic-fibre composites

    Scanning acoustic microscopy (SAM) has been used to study metal matrix composites (MMCs) reinforced with silicon-carbide monofilaments. For most of the specimens the matrix was Ti-6Al-4V, but Ti3Al and 6061 Al ma...

    C. W. Lawrence, G. A. D. Briggs, C. B. Scruby in Journal of Materials Science (1993)

  5. No Access

    Article

    Acoustic microscopy of ceramic-fibre composites

    Two silicon-carbide-fibre composites, one with a magnesium-aluminosilicate matrix and the other with a calcium-aluminosilicate matrix, were studied using acoustic microscopy. Contrast was found between the fib...

    C. W. Lawrence, G. A. D. Briggs, C. B. Scruby in Journal of Materials Science (1993)

  6. No Access

    Article

    Acoustic microscopy of ceramic-fibre composites

    The microstructure of Nicalon-reinforced borosilicate glass was studied using scanning acoustic microscopy (SAM) and scanning electron microscopy (SEM), Acoustic micrographs exhibited high contrast, and the fo...

    C. W. Lawrence, G. A. D. Briggs, C. B. Scruby… in Journal of Materials Science (1993)

  7. No Access

    Article

    Microstructural observations of two deformed partially stabilized zirconia ceramics using acoustic microscopy

    Ceramics containing zirconia exhibit increased fracture toughness because of the transformation mechanism. Because the acoustic microscope yields contrast at regions of differing elastic properties, it is poss...

    A. F. Fagan, G. A. D. Briggs, J. T. Czernuszka… in Journal of Materials Science (1992)

  8. No Access

    Article

    Acoustic microscopy of low-ductility materials

    Acoustic microscopy offers materials scientists not only high resolution, but also the ability to image sub-surface and surface features by its unique elastic contrast mechanisms. It is a particularly powerful...

    D. G. P. Fatkin, C. B. Scruby, G. A. D. Briggs in Journal of Materials Science (1989)

  9. No Access

    Chapter and Conference Paper

    Acoustic Microscopy of Surface Cracks: Theory and Practice

    Recent developments in acoustic microscopy of surface cracks are briefly reviewed. Particular attention is devoted to the dominant role which is played by the excitation of Rayleigh waves on the surface of the...

    G. A. D. Briggs, M. G. Somekh in Solid mechanics research for quantitative … (1987)

  10. No Access

    Article

    The elastic properties of ion-implanted silicon

    The elastic properties of silicon implanted with As+ and Si+ in the dose range 1014 to 1015 ion cm−2 has been investigated. Reflection scanning acoustic microscopy techniques have been used to determine changes i...

    P. J. Burnett, G. A. D. Briggs in Journal of Materials Science (1986)

  11. No Access

    Article

    Non-destructive testing and acoustic microscopy of diffusion bonds

    Despite successful applications of diffusion bonding, there is a lack of good quality assessment methods. A survey of published results shows non-destructive testing techniques (NDT) developed for fusion welds...

    B. Derby, G. A. D. Briggs, E. R. Wallach in Journal of Materials Science (1983)

  12. No Access

    Article

    The potential drop across an imperfect diffusion bond

    In the non-destructive evaluation of diffusion bonds, a possible technique is to measure the potential drop for a given current flow. Using evidence from optical and acoustic microscopy, the geometrical detail...

    K. W. Lodge, G. A. D. Briggs in Journal of Materials Science (1983)

  13. No Access

    Article

    Acoustic microscopy of ferroelectric ceramics

    Ferroelectric ceramics have been observed in an acoustic microscope. The images demonstrate the ability of the microscope to image elastic properties and to penetrate opaque layers.

    Q. R. Yin, C. Ilett, G. A. D. Briggs in Journal of Materials Science (1982)