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The realization method of electron beam surfi-sculpt on Ti-6Al-4V alloy was studied. Surfi-sculpt could be obtained by tailored scanning waveform based on the new scanning control system, and then the protrusions with no less than 2 mm in height were got on the metal surface. By the method, the different profiles of the protrusions were tried from different scanning waveforms and frequencies and the microstructure of protrusions was analyzed. The results show that six lines meeting waveform is the best way to get protrusions, while proper frequency is also a key factor to realize the surfi-sculpt process. The microstructure of the protrusion could be divided into four parts, which are edge zone, central zone, HAZ and base metal.

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The properties and homogeneity of a composite laminate are strongly dependent on structures and microstructures in it. The investigations have shown that the microstructures of carbon fiber-reinforced polymer composite laminates can be visualized by means of acoustic imaging techniques. The frequency of ultrasonic wave to be used is up to 50MHz. The composite laminates to be investigated include unidirectional carbon fiber-reinforced polymer composite laminates, bi-directional carbon fiber-reinforced polymer composite laminates and carbon fiber woven composite laminates. Very useful quantitative information about inside structures of the composites can be visualized in plan-section of the laminates in the depth directions by ultrasonic T-scan imaging technique. Typical results have been represented in this article.