Page 15 - Automotive2-Railroad Industry
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DIC Analysis and High-Time Resolution System   — CFRP Break Behavior Monitoring —


                    Using the high-time resolution measurement system, jointly developed with the Advanced Composites Group, Aerospace Research and Development
                    Directorate, Japan Aerospace Exploration Agency, breaks are detected using a load amplifier. The transmission of a trigger signal to a high-speed video
                    camera makes possible synchronization between the testing machine and the high-speed video camera. This has facilitated clarification of the material
                    breakage process from observations of the high-time resolution area, as well as the non-contact measurement of displacement and in-plane distortion.




                                                                 Trigger Signal












                                                                   Light
                                          HyperVision HPV-X                        Autograph AG-X plus
                                                                  source
                                        High-Speed Video Camera             Shimadzu Precision Universal Testing Machine
                                High-speed video camera with highest     Universal testing machine equipped with the latest
                                specifications in class                  measurement and control functions
                                Max. Recording Speed   : 10 million frames/sec  Test Force Range  : 10 N to 300 kN
                                Max. No. of Stored Images : 256          Test Speed Range  : 0.0005 to 1,000 mm/min
                                Max. Resolution   : 100,000 pixels       Sampling Function : Max. 0.2 msec












                                             CFRP Static Breakage Monitoring (Recording speed 300,000 frames/sec, 3 μs between images)









                                     Minus                       Distortion                  Plus
                                                  DIC Analysis Results (Distortion concentrated not only at 45° but also at -45°)


                    DIC analysis stands for the testing method known as digital image correlation. In this method, random patterns on the surface of the object are compared
                    pre- and post-deformation, and the extent to which the pattern has moved is investigated. It can also be used for distortion analysis of members and large
                    structures under high temperatures, and of minute members under a microscope. Furthermore, when acquiring DIC analysis data, the use of our high-time
                    resolution measurement system, comprising a high-speed video camera and an Autograph testing system, facilitates clarification of the materials breakage
                    process from observations of the high-time resolution area, and the non-contact measurement of displacement and in-plane distortion.



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