Testing of the Structure of Carbon Fiber Reinforce Polymer Composite Panels Due to Blast Explosion Using C-Scan Ultrasonic Test Aid

Ultrasonic testing (ultrasonic testing) utilizes high-frequency sound waves to detect damage to a material, composite or workpiece. This test is commonly used to inspect materials made of metal or plastic, as long as the material is not absorbent. In its application, ultrasonic testing uses a workpiece vibrating device called a probe. Ultrasonic waves emitted by the probe will vibrate the atoms in the test material or workpiece. The most ideal method for inspecting defects in composites is the immersion method. The size of the immersion tank must be considered as well as possible in order to accommodate the test object of the required size. C-Scan provides data about the location, size, and shape of the defects that occur, besides C-Scan with very high resolution can produce very detailed images. The specimen tested was a laminated composite made of C-glass/epoxy with material properties. The specimen is in the form of a square with a size of 150mmx100mm (referring to ASTM-D7136-12), the test specimen has a thickness of 2.5 mm and is given an impact load with an energy of 11.3 Joules. Stacking sequence of the test specimen, marking and representing the orientation of the fibers in a single layer (layer) of woven composite. After being given an impact load, there is damage in the form of delamination on the plate. plate damage can be detected by back light and numerical simulation.