EVALUATION OF OVERHANG ANGLE IN TIG WELDING-BASED WIRE ARC ADDITIVE MANUFACTURING PROCESS
Journal Title: International journal of research -GRANTHAALAYAH - Year 2019, Vol 7, Issue 10
Abstract
Wire Arc Additive Manufacturing (WAAM) is a relatively new manufacturing method. It is a novel technique to build net-shaped or near-net-shaped metal components in a layer-by-layer manner via applying metal wire and selection of a heat source such as laser beam, electron beam, or electric arc. WAAM process is preferable as an alternative to traditional manufacturing methods especially for complex featured and large scale solid parts manufacturing and it is particularly used for aerospace structural components, manufacturing and repairing of dies/molds. TIG weldingbased WAAM method is implemented by depositing continuous wire melted via heat. In this study, the overhang (self-supporting) angle in TIG welding-based wire arc additive manufacturing process is investigated. The overhang angles are the angles at which a 3D printer can build tapered (overhang) surfaces without the need to supporting material below the printing layer. The material, bead height, TIG weld parameters and the environment temperature (cooling rate of printed layer) are the parameters which affect the overhang angle. The results show that the maximum overhang angle is also dependent on the temperature of the previous layer. For the selected set of process parameters, the maximum overhang angle is found as 28o, if the temperature of the previous layer is cooled to 150oC before the subsequent layer is deposited.
POLYCYSTIC OVARIAN SYNDROME(PCOS), AWARENESS AMONG FEMALE STUDENTS, QASSIM UNIVERSITY, QASSIM REGION, SAUDI ARABIA
Introduction: Polycystic Ovarian Syndrome (PCOS) is a condition that affects a woman’s hormone levels and it is said to be the most common female syndrome. Affects between 4-8% of reproductive-aged women and is associate...
SOCIAL PROBLEMS AND ENVIRONMENT
Human beings interact both with the social world and nature. Both, economic development and stable environment are required for the continual improvement of lifestyle and living standards of the people in the society and...
DOES FINANCIAL PLAN IMPACT INVESTMENT DECISIONS?
Discipline is the bridge between goals and accomplishments and good financial habits bring discipline in financial decision making and have profound impact on the investment choices. This study proposes to study core fin...
SURVEY ON DESIGN OF PATIENT BLOOD PRESSURE MONITORING SYSTEM USING SECURE IOT
Blood Pressure Monitoring using sensor and cloud technology, Personal biological readings such as blood pressure are collected by sensor networks device from patients at homes and will be transmitted to cloud and get tre...
SIMULATION OF PSO BASED APPROACH FOR CMOL CELL ASSIGNMENT PROBLEM
Particle swarm optimization (PSO) approach is used over genetic algorithms (GAS) to solve many of the same kinds of problems. This optimization technique does not suffer, however, from some of GA’s difficulties; interact...