Indonesian Journal of Engineering Research  (IJER) is a peer reviewed two time a year (January and July) that publishes full-length papers. It is international journal aimed to the development of fundamental theoretical knowledge in engineering as well as the application of the technological development in engineering fields including: Civil, Electrical, Mechanical, Industrial, Chemical, Informatics, Environmental and Renewable Energy or multidisciplinary in engineering. We accept original scientific papers reporting on original theoretical or practical research results with sufficient data. We also accept papers that contribute to the implementation of scientific results for practical use.