@thesis{thesis,
		author={Muhammad Nasywan  Widiyarso},
		title ={PENGARUH VARIASI WAKTU PERENDAMAN ALKALI TERHADAP KEKUATAN TARIK KOMPOSIT POLIESTER BERPENGUAT SERAT IJUK},
		year={2023},
		url={http://eprints.stta.ac.id/1125/},
		abstract={In the current era, composites are one of the materials that are often found in 
the automotive industry. The advantages of this material include light weight, good 
mechanical ability and corrosion resistance. Composites consist of matrix and 
reinforcement. The matrix is usually a polymer that is either a thermoset or a 
thermoplastic. While the reinforcement consists of synthetic fibers, natural fibers 
and particles or powders.
 This study aims to determine the effect of variations in alkali immersion time on 
the tensile strength of the arenga pinata fiber-reinforced polyester composite, 
fracture morphology, and the feasibility of the research results as a car dashboard. 
Composites were made using the hand lay-up method, polyester 157 BQTN (UPRs), 
0° fiber orientation, 190 mm fiber length, 10% fiber volume fraction and 1% matrix 
weight catalyst. The results of the tensile test on arenga pinata fiber composites 
with variations in alkaline immersion time of 60 minutes have an average tensile 
stress of 28,22 MPa. The variation of 90 minutes alkaline immersion time has an 
average tensile stress of 33,61 MPa. The variation of alkaline immersion time of 
120 minutes has an average tensile stress of 22,18 MPa. And for variations in 
immersion time of 150 minutes it has a tensile stress of 31,06 MPa.}
		}