Study Of Helmet Toughness In Rafting Fiberglass And Talk Reinforced Epoxy Composite Materials With Impact-Free Fall Method

Fiberglass is an alloy or a mixture of several chemicals (composite materials) that react and harden within certain time. This material has advantages over metal materials, including: lighter, easier to shape, cheaper. Based on the static tensile test, average strength three-layer composite reinforced with woven, random, talc glass fiber in three test specimens was 50.7970 MPa for composition 1, 52.7684 2, 2. 3 53.6094 MPa. bending impact 1 39.4805 MPa, 2 33.3044 53.8329 compositions, better because it higher value than other two compositions. From simulation results, stress top 7.05 front 5.77 side 4.66 And from results comparing free fall experimental above are 7.06 then difference 0.01 (0.14%), For 5.12 so 0.65 (11.26%), 4.04 we get 0.62 (13,3%). The amount energy absorbed by rafting helmet flat plate anvil 729.