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Fabrication and mechanical properties of lightweight ZrO2 ceramic corrugated core sandwich panels
Affiliation:1. State Key Laboratory for Turbulence and Complex System, College of Engineering, Peking University, Beijing 100871, PR China;2. Department of Mechanics, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, PR China;1. Department of Engineering Mechanics, Harbin University of Science and Technology, Harbin 150080, PR China;2. Department of Mechanics and Aerospace Technology, Peking University, 100871 Beijing, PR China;1. State Key Laboratory for Mechanical Structure Strength and Vibration, Xi’an Jiaotong University, Xi’an 710049, PR China;2. College of Science, Air Force Engineering University, Xi’an 710051, PR China;3. Department of Engineering Mechanics, CNMM, Tsinghua University, Beijing 100084, PR China;1. School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, China;2. Key Laboratory of Traffic Safety on Track, Ministry of Education, Changsha, Hunan, China;3. Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Changsha, Hunan, China;4. National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Changsha, Hunan, China;1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan 410082, PR China;2. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi''an, Shanxi 710049, PR China;3. Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, PR China;4. College of Aerospace Engineering, Chongqing University, Chongqing 400044, PR China
Abstract:ZrO2 ceramic corrugated core sandwich panels were fabricated using gelcasting technique and pressureless sintering. The nominal density of the as-prepared ZrO2 ceramic corrugated panel was only 2.4 g/cm3 (42.9% of bulk ceramic). Lightweight was realized through this sandwich structured design. The three-point bending strength was measured to be 298.4 MPa. And the specific bending strength was as high as 124.3 (114% higher than bulk ceramic). The compressive strength was 20.2 MPa. High strength was also realized through this sandwich structured design. The stress distribution during three-point bending and compression testing was finally simulated using finite element analysis (FEA) method.
Keywords:Ceramics  Corrugated core panel  Mechanical properties  Finite element analysis
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