PENGARUH FRAKSI VOLUME DAN ARAH SERATTERHADAP KEKUATAN BENDING DAN KEKUATAN TARIK KOMPOSIT UREA FORMALDEHYDE DENGAN PENGUAT SERAT BATANG KEDELAI
| Main Author: | Wardi,, Ahmad Sahri |
|---|---|
| Format: | Thesis NonPeerReviewed Book |
| Bahasa: | eng |
| Terbitan: |
, 2010
|
| Subjects: | |
| Online Access: |
http://eprints.unram.ac.id/7219/1/BAB%20I.doc http://eprints.unram.ac.id/7219/ |
Daftar Isi:
- The use of composite materials is growing at over the development of the manufacturing industry. One is the composite fiber of soybean rods. The purpose of this study is to know the effect of volume fraction and the direction of soybean rods by using the matrix urea formaldehyde with the random fiber direction and fiber in one direction. The variation of fiber volume fraction of soybean rods are 20%, 30% and 40%. Methods of making composite specimen are done by hand lay up to 2cm fiber length for random fibers and matching with the long mold to fiber in one direction. Testing is done by bending test following the standard of ASTM D790 and tensile test with the standard of ASTM D638. The results of study show that the tensile and bending strength of composite urea formaldehyde soybean rods tend to increase with increasing fiber volume fraction and fiber orientation in one direction of bending strength and the tensile strength will tend to increase as well. The highest bending strength of the specimen with the volume fraction of 40% with the fiber in one direction is equal to 20.83 MPa, and the lowest bending specimen is with the volume fraction of 20% in random fiber direction at 5, 2 MPa. While the tensile test has the highest strenght with the volume fraction of 40% fiber in one direction is equal to 10.60 MPa, and the lowest strenght of tensile test with the volume fraction of 20% in the random fiber direction is equal to 0.8 MPa. So that a volume fraction and fiber direction effect on the tensile and bending strength.