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The airflow that accompanies the tactile sensation provided by the Airborne Ultrasound Tactile Display is investigated. Due to it, some people report that they feel something like airflow although the display generates steady pressure in midair. There are two possible areas where it arises: The surface of the skin or the pathway along the ultrasound beam. In this paper, two experiments are conducted...
A new non-destructive testing (NDT) method for defect detection in concrete structures is presented. The method is based on the dynamic response of flawed concrete structures subjected to impact loading. Conversely to similar NDT techniques, such as the impact-echo method, the present method uses non-contacting devices for both impact generation (a shock tube producing shock waves) and response monitoring...
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