Education

Honors and Awards

• Fellow, American Society of Mechanical Engineers (ASME), 2020
• Naval Research Laboratory (NRL), Summer Faculty Fellowship, 2020
• Air Force Research Laboratory (AFRL), Summer Faculty Fellowship, 2018
• College, Research Excellence Award, Florida State University , 2017
• University, Grant Assistant Program (GAP) Award, Florida State University, 2017
• Air Force Research Laboratory (AFRL), Summer Faculty Fellowship, 2016
• University, Grant Assistant Program (GAP) Award, Florida State University, 2016
• Institute of Electrical and Electronics Engineers (IEEE) Education Society, Teaching Award, 2015
• University, Research Incentive Award, University of Central Florida, 2013
• University, Teaching Incentive Award, University of Central Florida, 2012
• Office of Naval Research (ONR), Young Investigator Award, 2011
• Society of Mechanical Engineers (SME), Outstanding Young Manufacturing Engineer Award, 2011
• Oak Ridge Associated University Visiting Industrial Scholar Award, 2008

Publications

A Deep Learning Approach in Optical Inspection to Detect Hidden Hardware Trojans and Secure Cybersecurity in Electronics Manufacturing Supply Chains

Kulkarni, A., & Xu, C. (2021), FRONTIERS IN MECHANICAL ENGINEERING-SWITZERLAND. https://doi.org/10.3389/fmech.2021.709924

Additive manufacturing of ZrB2-ZrSi2 ultra-high temperature ceramic composites using an electron beam melting process

Jia, Y., Mehta, S. T., Li, R., Chowdhury, M. A. R., Horn, T., & Xu, C. (2021), CERAMICS INTERNATIONAL, 47(2), 2397–2405. https://doi.org/10.1016/j.ceramint.2020.09.082

Complex impedance spectra of polymer-derived SiC annealed at ultrahigh temperature

Jia, Y., Chowdhury, M. A. R., & Xu, C. (2020), JOURNAL OF THE AMERICAN CERAMIC SOCIETY. https://doi.org/10.1111/jace.17395

Dielectric properties of polymer-derived ceramic reinforced with boron nitride nanotubes

Jia, Y., Ajayi, T. D., & Xu, C. (2020), JOURNAL OF THE AMERICAN CERAMIC SOCIETY. https://doi.org/10.1111/jace.17301

Electrical Conductivity and Structural Evolution of Polymer Derived SiC Ceramics Pyrolyzed From 1200°C to 1800°C

Chowdhury, M. A., Wang, K., Jia, Y., & Xu, C. (2020), Journal of Micro and Nano-Manufacturing. https://doi.org/10.1115/1.4046191

Multifunctional Ceramic Composite System for Simultaneous Thermal Protection and Electromagnetic Interference Shielding for Carbon Fiber-Reinforced Polymer Composites

Jia, Y., Ajayi, T. D., Wahls, B. H., Ramakrishnan, K. R., Ekkad, S., & Xu, C. (2020), ACS APPLIED MATERIALS & INTERFACES, 12(52), 58005–58017. https://doi.org/10.1021/acsami.0c17361

Aligned carbon nanotube/carbon (CNT/C) composites with exceptionally high electrical conductivity at elevated temperature to 400 degrees C

Jia, Y., Yang, J., Wang, K., Chowdhury, M. A. R., Chen, B., Su, Y., … Xu, C. (2019), MATERIALS RESEARCH EXPRESS, 6(11). https://doi.org/10.1088/2053-1591/ab4385

Multifunctional Hybrid Composite for Thermal Protection of Carbon Fiber Reinforced Polymers (CFRPS) in Aerospace Applications

Ajayi, T., Kim, K., Liu, J., Nickerson, B., & Xu, C. (2019), SAMPE 2019 - Charlotte, NC. Presented at the SAMPE 2019 - Charlotte, NC. https://doi.org/10.33599/nasampe/s.19.1367

Science and Engineering Courses, Theory and Practice: An Example

Mousavinezhad, S., & Xu, C. (2019), 2019 ASEE Annual Conference & Exposition Proceedings. Presented at the 2019 ASEE Annual Conference & Exposition, Tampa, Florida. https://doi.org/10.18260/1-2--33254

Teaching and Learning of Electrical and Computer Engineering Courses with High Mathematical Contents

Mousavinezhad, S., Xu, C., & Tatar, E. (2019), 2019 ASEE Annual Conference & Exposition Proceedings. Presented at the 2019 ASEE Annual Conference & Exposition, Tampa, Florida. https://doi.org/10.18260/1-2--33343

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Grants

Electromagnetic Property Measurement Apparatus of Ceramic Materials at High Temperature Environments

US Air Force - Office of Scientific Research (AFOSR)(9/15/21 - 9/14/22)

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Electromagnetic Property Measurement Apparatus of Ceramic Materials at High Temperature Environments

Sponsor: US Air Force - Office of Scientific Research (AFOSR)

Start Date: 9/15/21

End Date: 9/14/22

Abstract

The objective of this proposal is to develop a platform in order to measure the microwave absorption of ceramic materials at high temperature (up to 2300oC). Generally, ceramic materials of different compositions vary in their electrical and dielectric properties at different temperatures. However, during our literature survey, there is very limited facility for high temperature dielectric property measurement from room temperature to high temperature. Existing research in this area extends to temperatures of only 1000oC, which is far from the desired temperature range for practical applications. The apparatus we proposed here will be essential for many areas of research, including high-temperature electronics, thermoelectric devices, space and aerospace applications.

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Accelerating Delivery of a Secure Hypersonic Sensor Network

Air Force Research Laboratory (AFRL)(4/09/20 - 6/06/20)

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Accelerating Delivery of a Secure Hypersonic Sensor Network

Sponsor: Air Force Research Laboratory (AFRL)

Start Date: 4/09/20

End Date: 6/06/20

Abstract

To validate product-customer fit and develop a detailed system development and demonstration plan with AFRL for a secure hypersonic sensor network.

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MRI: Acquisition of a Large High-Temperature Vacuum Press for Advanced Materials Research, Manufacturing and Training at NC State University

National Science Foundation (NSF)(8/01/20 - 7/31/23)

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MRI: Acquisition of a Large High-Temperature Vacuum Press for Advanced Materials Research, Manufacturing and Training at NC State University

Sponsor: National Science Foundation (NSF)

Start Date: 8/01/20

End Date: 7/31/23

Abstract

It is proposed to acquire and install a Diffusion Bonding Hot Press Furnace for processing advanced materials such as ceramics, composites, refractory metals and composite metal foams for research and training on various topics of materials processing, evaluation and treatment. The system will be used to perform processing of panels of various sizes up to 1ft x 1ft. Currently the only system similar to this unit in the entire area is an old (over 50 years old) hot press with a very small chamber size and malfunctioning hydraulic press that is in PI’s lab. Due to the lack of capacity of this machine, the PIs are unable to process large parts or advanced materials that require higher temperature or pressure for manufacturing (such as ceramics and refractory metals). This press can be a valuable tool not only to support all PIs’ research, but also to support all users of NCSU on-campus Center for Additive Manufacturing and Logistics (CAMAL) and other universities in the area such as Duke university. CAMAL center currently houses five metal additive manufacturing machines that are used for a variety of research projects. However, it is lacking such large chamber press with high temperature capabilities for processing and post processing treatments of advanced ceramics, metallic and composite materials. Since the unit will housed in a shared facility, it will be easy for access both as an educational tool and a research tool for users not only at the college of engineering, but also all other colleges across the campus as well as outside users from both academia and industry. The advantages of this system over all other units are the distinctly larger chamber along with higher service temperatures and clean, efficient, and fast heating and cooling rate with a simultaneous heating and pressing. Additionally, it may be used in vacuum and in partial pressure inert gas atmosphere. Moreover, proper operation of the furnace may be mastered in a few hours which is necessary for such equipment that is going to be used by various users and students both as an educational and a research tool.

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Effect of Pyrolysis Temperature and Dopant on the Frequency-Dependent and Temperature-Dependent Electromagnetic Properties for Ultra-High Temperature Ceramics (UHTCs) Reinforced Ceramic Composites

US Air Force - Office of Scientific Research (AFOSR)(11/15/20 - 11/14/22)

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Effect of Pyrolysis Temperature and Dopant on the Frequency-Dependent and Temperature-Dependent Electromagnetic Properties for Ultra-High Temperature Ceramics (UHTCs) Reinforced Ceramic Composites

Sponsor: US Air Force - Office of Scientific Research (AFOSR)

Start Date: 11/15/20

End Date: 11/14/22

Abstract

This proposal is to study the effect of pyrolysis temperature and dopant on the frequencydependent and temperature-dependent permittivity for ultra-high temperature ceramics (UHTCs) reinforced ceramic composites, and to investigate the corresponding electromagnetic (EM) wave absorption at a broad application temperature range (e.g., from room temperature to ~1600oC) with the frequency range at the X to Ka band (8-40 GHz).

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A Hybrid Multi-functional Composite Material by Co-curing Lay-up Process for Enhanced Thermal/Chemical Stability and Surface Durability

US Navy-Office Of Naval Research(11/01/18 - 8/31/21)

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A Hybrid Multi-functional Composite Material by Co-curing Lay-up Process for Enhanced Thermal/Chemical Stability and Surface Durability

Sponsor: US Navy-Office Of Naval Research

Start Date: 11/01/18

End Date: 8/31/21

Abstract

This proposal is to develop a hybrid, multifunctional composite material that is an improvement upon the thermal and chemical stability, and surface durability of traditional polymer composites. Such hybrid multifunctional composite materials can be applied in higher temperature and harsher environment than current typical polymer based composites, and can be utilized especially in naval and marine parts for enhanced strength and durability (salty and high moisture environment). By using a standard co-curing lay-up process, in which a flexible conductive ceramic thin laye is bonded directly onto the outmost layer of polymer composites to ensure the material integrity, a new, effective and useful composite will be manufactured following the same procedure as standard carbon fiber reinforced polymer (CFRP) composites.

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Manufacturing Hybrid Multi-functional Composite Skin Materials via Standard Prepreg Lay-up Process

US Navy-Office Of Naval Research(7/01/18 - 12/04/18)

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Manufacturing Hybrid Multi-functional Composite Skin Materials via Standard Prepreg Lay-up Process

Sponsor: US Navy-Office Of Naval Research

Start Date: 7/01/18

End Date: 12/04/18

Abstract

The objective of this project is to develop a hybrid, multifunctional composite material that improves the thermal and chemical stability, and surface durability of traditional carbon fiber reinforced polymer (CFRP) composites. By using a standard prepreg lay-up process, in which a flexible conductive ceramic thin layer is bonded directly onto the outmost layer of polymer composites to ensure the material integrity, a hybrid composite will be manufactured following the same procedure as standard CFRP composites without increasing extra manufacturing cost. The produced hybrid composites can be used in harsher environment, (e.g., high temperature, moisture under load, ultraviolet radiation, corrosive chemicals). The manufacturing procedure is readily scalable.

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