Abstract: Testing of ultra high performance fiber reinforced concrete under impact loading is described in this paper. In addition a design process of a novel impact measurement device is presented in this work. There are several ways how to test impact resistance of concrete and various groups throughout the world developed different testing devices. Most of such devices are based on a principle of a falling weight on the concrete specimen. This work however presents an impact machine that is based on a pendulum principle. Such test configuration has several advantages, such as elimination of double hits, easy access to the sample and high degree of device modulability. In addition, the placement of sensors and high speed camera is relatively easy. In this experimental work concrete beams were tested in the testing device, but the test setup can be rearranged to test slabs or joins. The calibration process of the machine is shown in this paper as well as the results from impact resistance measu

• Publication Date: 27-Aug-2014
• DOI: 10.15224/978-1-63248-025-5-66
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Abstract: The palmprint has been used for future prediction of human being. In the recent years the palmprint has been used for biometric applications as human verification. The palmprint has many lines of different sizes and directions. The lines are detected as edges using popular edge detecting algorithms such as Sobel, Prewitt, Roberts, Log, Zero-cross, and Canny. Thus, an analysis work has been performed on these popular edge detection algorithms to identify suitable edge detection algorithm which improves the palmprint matching process. The experiment results reveal that the canny edge detection algorithm identifies complete set of edges of various sizes compared with other popular edge detection algorithms. Moreover, the Sobel edge detection algorithm identifies the medium and as well as longer lines. Further, the Prewitt, Roberts, Log, and Zero-cross edge detection algorithms ignore the small lines and identifies only the main longer lines. Thus, the analysis work confirms the Canny and

• Publication Date: 27-Aug-2014
• DOI: 10.15224/978-1-63248-024-8-01
• Views: 0
• Downloads: 0