D.A. Catur, D.A. Catur (2018) PENGARUH SUDUT DAN JARAK Z-PIN TERHADAP KEKUATAN TEKAN DAN TARIK KOMPOSIT SANDWICH DENGAN INTI POLYURETHANE FOAM YANG DIBUAT DENGAN METODE VARI (VACUUM ASISSTED RESIN INFUSION). S1 thesis, Universitas Mataram.
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Abstract
Sandwich construction becomes an option on structures that have high stiffness with lighter weight. The principle of sandwich structure is to combine composite skin with a high elastic modulus with a lightweight composite core to obtain a rigid combination, strong but lightweight materials. However, the core made of polyurethane foam has a compressive strength and modulus close to zero in the direction of the z-axis. The solution that can be given is to strengthen the polyurethane as the composite sandwich core. The purpose of this research is to study the effect of z-pin distance and angle to press strength, and tensile strength test produce sandwich composite by using bamboo stick as alternative material of z-pin core amplifier. Composite sandwiches with polyurethane fibers are boosted with fiberglass fibers made with several variations, tested to obtain bending strength, shear strength and size damage area. In this study, sandwich composites were made with unrefined or strengthened polyurethane rigid foam core by inserting z-pins to form the X structure. The insertion angle was varied 60º, 75º, 90º. The distance between z-pins is varied 10 mm, 15 mm and 20 mm. While the composite sandwich made with the method of Vacuum Assisted Resin Infusion (VARI). Bending tested (ASTM C365standard) and drop weight test (ASTM C297 standard). Based on the research that has been done, the result shows that the effect of angle and z-pin distance to to press strength, and tensile strength test is directly proportional, that is the greater the angle and z-pin distance given the bending strength, shear strength and drop weight damage area is greater. Z-pin insertion on sandwich composites improves the stiffness that affects the strength of the sandwich composite.
| Item Type: | Thesis (S1) |
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| Keywords (Kata Kunci): | Sandwich Composite Polyurethane Fiber z-pin Vacuum assisted resin resin infusion |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Fakultas Teknik |
| Depositing User: | Wiwin Kartikawati |
| Date Deposited: | 01 Oct 2018 06:41 |
| Last Modified: | 01 Oct 2018 06:41 |
| URI: | http://eprints.unram.ac.id/id/eprint/8162 |
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