IMPACT OF SEA WATER AND OPEN AIR TOWARDS THE INTERFACE STRENGTH OF THE EPOXY RESIN MATRIX WITH THE FIBER OF PETUNG BAMBOO LAMINATED BLADES AS A CONSTRUCTION MATERIAL FOR WOODEN SHIPS

Bamboo in an extraordinary nature material. Bamboo can grow fast, the price is cheap, and available everywhere. The weight is light but it is harder and stronger than regular wood and fiberglass. The main purpose of this research is to know the impact of open air and emersion of seawater to the part of fiber of petung bamboo towards interface bond, epoxy matrix, of the lamination of the bamboo. This research has conducted a compression test, tensile test, and shear test towards the interface bond in the direction of x,y, and z axis using the standard of ASTM D143. The changes of open air impact happened from week 0 to 9 reach the number of 40% and the emersion of seawater was 70%. The average results obtained 9 weeks for the influence of open air and sea water is a tensile test of 33.68 kg / cm2, 21.72 kg / cm2. Shear test of 24.37 kg / cm2.13.87 kg / cm2. Compressive test 333.53 kg / cm2, 316.80 kg / cm2. The average compressive strength of laminated bamboo after undergoing treatment for 9 weeks can be classified into Class II and Class III in BKI Ship Kayu regulations. The test results show that the tensile strength and compressive strength better brick arrangement, while for shear strength better aligned. The best tensile strength test direction on the Y axis, the best shear strength test direction on the Z axis, and the best compressive strength test direction on the X axis. The higher the Interface resin value at each cm2, the greater the strength of the interface bond due to the need for resin in mm / cm2 the higher, conversely the lower the value of Interface resin in each cm2, the lower the bond strength of the interface due to the lower resin requirements in mm / cm2.