The Effect of Short and Long Fiber on Impact Strength in High Density Polyethylene-Fiberglass Composite

This study aims to investigate the HDPE (High Density Polyethylene) reinforced with fiberglass increase strength and toughness into a composite that has potential replace ABS (Acronitrile Butadiene Styrene). The composites were made variations in composition based on volume fraction. as matrix reinforcement through mixing method, molded heating machine (T=140°C), pressed pressing time of ±45 minutes. Then, specimens cut according ASTM D6110 standard, Charpy impact test was performed. long fiber for 70%vol 30%vol, average 176.838 Joule/mm². 80%vol 20%vol, 208.08 short 72.858 33.394 Based research mixture at 40%/60%vol variation, 24.8 Joule/mm2 20%/80%vol 18 In conclusion, lower than HDPE-Fiberglass composite. Therefore, can be used substitute car bumpers.