2nd International Conference on Advanced Surface Enhancement

7 - 8 Sept 2021 | Virtual Conference

PROGRAMME > Keynote Lectures
Keynote Speakers
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Prof. Chen Zhong

Nanyang Technological University

Special Wettability Surfaces: From Fundamentals to Applications

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Dr. Elmar Bonaccurso

Airbus

Icephobic Surfaces in Aeronautical Applications: Opportunities & Challenges

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Prof. Ong Soh Khim

National University of Singapore

Augmented Reality in Manufacturing

Prof. Mario Guagliano

Politecnico di Milano

Cold Spray for Structural Repair and Additive Manufacturing: The Role of Fatigue

Chen Zhong_31 Jul 2018.jpg

About The Speaker

Prof. Chen’s research interest includes 1) Surface engineering of materials and nanostructures for clean energy, environmental, microelectronic, and other functional applications; 2) Mechanical behavior of materials, encompassing mechanics & fracture mechanics of bulk, composite, and thin film materials, materials joining, experimental and computational mechanics of materials, materials degradation and failure analysis. Prof. Chen has served as an editor / editorial board member for several academic journals and book series. He has also served as a reviewer for more than 70 journals and a number of research funding agencies including the European Research Council (ERC). He is an author of over 400 peer-reviewed journal papers. According to Google Scholar, these papers have received over 19,000 citations with h-index of 71.

https://personal.ntu.edu.sg/aszchen/

Special Wettability Surfaces: From Fundamentals to Applications

Abstract

Surface wetting has been extensively studied in recent decades for a wide range of applications. For example, water-repellent superhydrophobic coatings can have a number of applications, including easy-cleaning, anti-corrosion, and anti-icing. On the other extreme, superhydrophilic surface can prevent fogging on optical lenses and screens. While we have learnt a lot from Nature on fundamental sciences behind these special wettability surfaces, the engineering applications often pose further constraints when determining a practical solution. In this talk, I will begin with some fundamentals on solid surface wetting states. Specific examples will be given to illustrate how the fundamental principles are applied in formulating these surfaces / coatings. Main challenges towards practical applications will be raised and discussed. Development of these special wettability surfaces has to take into consideration the application environment: practically useful coatings have to meet manifold requirements including low cost (non-reliance on expensive equipment and can be easily processed), scalability (large quantity for large area), applicability to complex shapes, easiness to incorporate different functional requirements, and reliability within the design life span.

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About The Speaker

SK Ong lectures at National University of Singapore, and her research interests are virtual and augmented reality applications in manufacturing, ubiquitous manufacturing, assistive technology and rehabilitation engineering. She is well known both internationally and nationally. She has received many accolades, including the 2004 Outstanding Young Manufacturing Engineer Award, US Society of Manufacturing Engineers. She is a Fellow of the International Academy for Production Engineering CIRP.

Augmented Reality in Manufacturing

Abstract

The manufacturing industry faces constant challenges of producing innovative products quickly. Product development processes are becoming increasingly more complex as products become more intricate and complicated. AR is an innovative and effective approach to improve product development processes. AR can enhance workers’ efficiency and productivity, and provide training for new employees and newly introduced processes and equipment.

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About The Speaker

Elmar Bonaccurso is a senior scientist for aerodynamic efficient surface technologies at Airbus Central R&T. He was previously a research group leader at The Centre of Smart Interfaces of TU Darmstadt and a group leader at the Max Planck Institute for Polymer Research in Mainz. Dr. Bonaccurso is an affiliate professor at Concordia University in Montreal and member of the executive board at the EU Graphene Flagship.

Icephobic Surfaces in Aeronautical Applications: Opportunities & Challenges

Abstract

Ice accretion on external aerodynamic surfaces impacts safety and performance of aircraft. Non-environmental-friendly methods have been used to remove ice formations on-ground (e.g. de-icing fluids) and in-flight (e.g. bleed air used as active ice protection system). Surface microstructuring is a promising strategy for manufacturing icephobic surfaces that can delay ice accretion or reduce ice adhesion to aircraft surfaces. Among those means to make icephobic surfaces, replicating and optimizing [2] superhydrophobic surfaces from nature [1] appears a promising route.

In this talk we demonstrate that short and ultra-short pulsed laser treatments are a viable technology to decorate alloys used in aviation with various functions. Among those, icephobicity is at the center of our interest. We will show that with such surface treatments ice adhesion can be effectively reduced and the performance of active ice protection systems can be increased.

Left: Lotus leaf surface [1]; Right: Direct Laser Interference Pattern produced on Stainless Steel [2].

References

[1] W. Barthlott and C. Neinhuis, “Purity of the sacred lotus, or escape from contamination in biological

surfaces,” Planta, vol. 202, no. 1, pp. 1–8, 1997.

[2] A. I. Aguilar-Morales, S. Alamri, and A. F. Lasagni, “Micro-fabrication of high aspect ratio periodic structures

on stainless steel by picosecond direct laser interference patterning,” J. Mater. Process. Tech., vol. 252, pp.

313–321, 2018.

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About The Speaker

Mario Guagliano is full professor at the Department of Mechanical Engineering, Politecnico di Milano, Milan, Italy. He has been working for more than 25 years in research related to mechanical surface treatments and processes to improve the mechanical properties of materials and structural components. His scientific interest is mainly about shot peening, cold spray and their effects on the mechanical properties of materials and parts.

He is and has been coordinator of H2020 and FP7 European projects; and responsible for national projects and several contractual research with private and public enterprises.

Chairman, co-chairman, member of the scientific committee and invited as plenary speaker in international conferences. He is a member of the International Scientific Committee on Shot Peening and of the Board of Directors of the EASN (European Aeronautic Science Network).

He is associate editor of the International Journal of Mechanics and Materials in Design, member of the Editorial Board of Surface and Coatings Technology and other international journals. He is author or co-author of more than 200 papers in international journals.

Mario Guagliano has been awarded honorary doctor by the University of Zilina (SK) in 2018.

Cold Spray for Structural Repair and Additive Manufacturing: The Role of Fatigue

Abstract

Cold spray technology is gaining more and more attention beyond its initial application, which is protective coating deposition.

Due to some indisputable key points, like the high deposition rate, the possibility to deposit thin films for surface functionalization or the suitability to be applied to build large parts, nowadays cold spray is considered an attractive process in many sectors, such as structural repair, re-machining and additive manufacturing.  As cold spray paves its way towards more structural applications, evaluating its performance under cyclic loading is significant.

Herein, after having introduced the process and traced the current state of the art on the contribution of various forms of cold spray deposits to fatigue strength, the lecture focusses on the achievements obtained by the research group in the field of structural repair and additive manufacturing.

Future perspectives for enhancing the fatigue behavior and the structural integrity of cold sprayed parts as well as the  most promising trends in the field are finally discussed.

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