Energy Balance: Performing Energy Usefulness in AISI 304 welding
Bambang Riyanta (a*), Wardana ING (b), Yudy Surya Irawan (b), Moch. Agus Choiron (b)
Departement of Mechanical Engineering Universitas Muhammadiyah Yogyakarta
Jl. Brawijaya Kasihan Bantul Yogyakarta Indonesia 55183, Email : bambangriyanta[at]umy.ac.id
Departement of Mechanical Engineering Brawijaya University, Jalan Veteran, Malang, Jawa Timur 65145, Indonesia.
Abstract
There are many researches on welding efficiencies have already been conducted, but very few of them take attention on energy usefulness in workpiece welding zone. Energy usefulness profile can be used as a reference in developing a thermodynamics model to predict post welding material properties and material behavior. The aim of this study is to obtain energy usefulness in AISI 304 welding. The study utilizes finding from previous researches to analyze and calculate the amount of energy received by a workpiece and the energy which is distributed to fusion zone, high temperature heat affected zone, low temperature heat affected zone and unaffected base metal. Metal casting theory approach is required to identify useful work process in welding. AISI 304 post welding energy usefulness profiles are then performed in an energy balance diagram. The present study result shows that energy usefulness decreases when the zone distance form the center of welding increase. The finding has a good agreement with entropy state function theory.
Keywords: : energy balance; welding zone; energy usefulness; metal casting approach; entropy state function.
Topic: International Symposium of Engineering, Technology, and Health Sciences