@thesis{thesis,
		author={ADHY NUGROHO  RADITYO},
		title ={ANALISIS SIFAT MEKANIK KOMPOSIT SANDWICH
FIBERGLASS WR 100-POLYFOAM TERHADAP BEBAN 
TARIK},
		year={2019},
		url={http://eprints.stta.ac.id/2011/},
		abstract={In the world of aeromodelling, and unmanned flight, sandwich composite 
material is often used as aircraft material. This material is corrosion-resistant, 
lightweight, and strong. So this material is very interesting to be tested.
The research carried out in this thesis aims to determine the manufacturing 
process of composite materials and analysis of differences in mechanical properties 
of composite materials in the form of stress and modulus of elasticity in WR-100 
fiberglass sandwich composites with the method of making hand lay-up but has a 
different fiber face angle with using tensile testing.
In this study the manufacturing process was carried out first. After the curing 
process is completed then the cutting and testing is done using a tensile test tool.
From the testing of 5 samples of composite sandwich specimens with 90? and 
45? face angles, the average modulus of elasticity was 350,333 ± 52,056 MPa and the 
average stress value was 34,421 ± 1,589 MPa. In testing 5 sample composite 
sandwich specimens with 90 face and 90? face fiber angles the average modulus of 
elasticity was 361,607 ± 52,05560894 MPa and the average stress value was 34,809 
± 5,514 MPa. The angle of the face fibers in the direction of the tensile direction 
(angle of face fibers 90? and 90) gives a modulus of elasticity and a higher voltage 
that is equal to 11,273 MPa and 0,388 MPa than the angle of face fibers 90? and 45?.}
		}