Mechanical Properties and Behavior of Three-Dimensional Periodic Ceramic Composites
Several emerging technologies have a critical need for materials that are light, strong, corrosion-resistant, and capable of performing in high-temperature environments. Ceramics have been considered the leading candidate materials in this scenario even with limitations such as their brittle nature. The development of reliable advanced ceramic components has recently become an intensively studied field of research and the present work focuses on determining the mechanical properties and behavior of three-dimensional periodic ceramic composites. Alumina (Al2O3) – based colloidal inks were carefully fabricated and robotically deposited to create such structures. Robocasting, a solid free-form fabrication technique was used to perform the directed assembly of three-dimensional periodic structures in a layer-by-layer build sequence. In order to minimize defect populations, the specimens were surface machined and isopressed. The samples will be submitted to four point bending tests to examine their mechanical response under specific applied bending loads. The success of this approach may advance issues concerning catastrophic failures of functional ceramic composites and is a valuable step in manufacturing flaw tolerant ceramics.
School:
University of Puerto Rico at Mayagüez
Department:
Mechanical Engineering
Research Advisor:
Jennifer A. Lewis
Department of Research Advisor:
Material Science and Engineering
Year of Publication:
2002