STUDI KOMPARASI KINERJA PERPATAHAN ALUMINIUM SERI 1XXX DAN 3XX.X DENGAN SINGLE EDGE NOTCHED TENSILE (SENT)

CANDRA PRAKUSNO, WAHYU (2019) STUDI KOMPARASI KINERJA PERPATAHAN ALUMINIUM SERI 1XXX DAN 3XX.X DENGAN SINGLE EDGE NOTCHED TENSILE (SENT). Skripsi thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Aluminum is one of the non-ferrous metals that is often used in transportation such as cars, ships and aircraft. Tensile test was carried out to investigate the mechanical properties of materials, one of which is toughness. Toughness can be determined by calculating work of fracture. The purpose of this study is to investigate the comparison between work of fracture and stress intensity factor. The specimens used are aluminum 1xxx and 3xx.x series. The tensile test was performed using a single notch with 45° angle and ± 5 mm notch length (a). The notch was made using self-modifying files and sandpaper. The calculating method used for work of fracture was ImageJ software. The result of the study showed that the work of fracture value (W) of the aluminum 3xx.x (308.93 kJ/m2 ) was higher than the aluminum 1xxx (298.96 kJ/m2 ). The value of the stress intensity factor (KI ) of the aluminum 3xx.x (20.02 MPa.Vm) was higher than aluminum 1xxx (16.67 MPa.Vm). Based on the work of fracture and stress intensity factor (K1), it could be concluded that the aluminum 3xx.x was tougher than the aluminum 1xxx

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