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http://dx.doi.org/10.14775/ksmpe.2020.19.02.038

Structural Characteristics Evaluation of the Injection Spiral Blade Used in Small Wind Turbines under Operating Conditions  

Gil, Young-Uk (Graduate School of Mechanical Engineering, Pusan National University)
Jo, Young-Kwan (Graduate School of Mechanical Engineering, Pusan National University)
Ji, Ho-Seong (MEMS Technology Centre, Pusan National University)
Yang, Hyoung-Keun (Department of Engineering Research, ESCO RTS Co., Ltd.)
Baek, Joon-Ho (Department of Engineering Research, ESCO RTS Co., Ltd.)
Je, Duk-Geun (JESAN Co.)
Jeong, Ho-Seung (School of Mechanical Engineering, BK21 Plus, Pusan National University)
Park, Sang-Hu (School of Mechanical Engineering, ERC/NSDM, Pusan Nat'l UNIV.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.19, no.2, 2020 , pp. 38-46 More about this Journal
Abstract
The purpose is to evaluate the structural characteristics of 750 mm diameter injection spiral blades under various operating conditions. A fiber-glass reinforced polypropylene material was employed to the injection blades, and mechanical tests on two kinds of glass-reinforced polypropylene were performed to evaluate the mechanical properties and to select a suitable candidate material. Also, three kinds of spiral blade geometries were studied to observe the influence of fixing rods between blades. For this, structural analyses were conducted to understand the role of fixing rods under a range of rotating speed. In addition, modal analysis was performed to confirm the resonance in the operating speed range. One-way fluid-structure interaction (FSI) analysis was carried out to know its mechanical integrity under dangerous wind speed conditions. Through this work, the structural characteristics of the proposed spiral blade geometries were studied under various operating conditions, and the requirements of mechanical properties of blades were determined.
Keywords
Structural analysis; Spiral blade; Injection material; Wind turbine; Rotational velocity;
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