Dynamic analysis of pineapple leaf fiber reinforced polyester composite pipes

This research shows composite pineapple leaf fibers which is made manually to form hollow cylinder with structure variant and fibers orientation of 1 layer 45 degrees, 1 layer 90 degrees and 2 layers 45 degrees and 2 layers 90 degrees. This pipe composite was analyzed through Experimental Modal Analysis (EMA) and Autodesk Inventor in order to identify the crack position. The mechanical properties of pipe composite which gotten from tensile test was used as the input to get natural frequencies mode shapes. The result of this research is pipe composite has low natural frequencies in crack condition and the changing of mode shapes curve can be applied in order to identify pipe composite crack position.