# Impact Energy Analysis of Aluminium Alloy Specimen with Variation of Impactor Conditions using Finite Element Method
> Renreng I.

URL kanonis: https://discover.unhas.ac.id/publications/impact-energy-analysis-of-aluminium-alloy-specimen-with-variation-of-impactor-co
Jurnal / Konferensi: Aip Conference Proceedings
Tahun terbit: 2022
DOI: https://doi.org/10.1063/5.0095996
ISSN: 0094243X
Citations: 0

## Authors
- Renreng I.

## Abstract
The type of material is one of the basic requirements for an automotive design. With the various needs of mechanical properties, the types of material are different. Charpy Impact Test is a method that can be used to measure the strength, toughness and ductility of a material. This study is aimed to determine the value of the impact energy and stress with variations of impactor velocity (2 m/s, 2.5 m/s and 3 m/s), the notch on the specimen (v, u and keyhole), impactor’s mass (1 kg, 1.5 kg and 2 kg). This research uses finite element method software to develop the models. From the simulation’s results, the value of the stress and impact energy obtained is various, namely, the maximum stress of v notch is 369.7 MPa at an impactor velocity of 3 m/s and impactor’s mass of 2 kg, the maximum stress of u notch is 371.9 MPa at an impactor velocity of 3 m/s and impactor’s mass of 1.5 kg, and the maximum stress of keyhole notch is 370.8 MPa at an Impactor velocity of 3 m/s and impactor’s mass of 2 kg. The maximum impact energy for 0.179 J/mm2 at keyhole notch with impactor velocity of 3 m/s and impactor’s mass of 2 kg. Therefore, the most difficult model to break is the model with a keyhole notch because it has higher toughness.

## Keywords
- Keyhole
- Charpy impact test
- Materials science
- Stress (linguistics)
- Finite element method
- Toughness
- Ductility (Earth science)
- Aluminium
- Composite material
- Structural engineering
- Creep
- Welding
- Linguistics
- Philosophy
- Engineering

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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