PhD Students

Arcade Serubibi

Project Title: Penetration resistance of hybrid metal-composite structures.

Abstract: A current trend in automotive and aerospace industries is to use high-performance and cost-effective materials such as metal-composite structures. These materials, which are manufactured by bonding metal and fibrous composite laminates together offer outstanding mechanical properties and damage tolerance capabilities. One of the methods to manufacture metal-composite structures is the Automated Fibre Placement (AFP). Evidences suggest that AFP process have several advantages over traditional techniques. Despite various benefits of using AFP composite laminates, the research on dynamic response of AFP metal-composite structures remains in its infancy. This research project aims at probing the contribution of AFP composite laminates on the dynamic behaviour of metal-composite structures by elucidating various energy dissipating mechanisms and optimum bond properties between adherends materials. We will also shade-light the effect of indenter speed and shape, as well as any contribution of AFP setting parameters such as lay-up speed, consolidation force on dynamic properties of the metal-composite hybrid.

University: ANU
Scholarship: ARC Training Centre
Supervisor: Prof Paul J. Hazell; Prof Ganga Prusty, Dr Juan P. Escobedo - Diaz

Mengyuan Li

Project Title: Optimisation of automated winding and forming of carbon composite tubular structures

Abstract: Carbon thermoplastic as a lightweight composite material with high strength and stiffness to weight ratios, is highly desirable for forming high-performance components especially for the automotive industry. This research includes both experimentation and characterisation of a rapid post-forming process for the carbon thermoplastic tubes. Suitable heating parameters are derived to enable the rotary draw bending process to post-form thermoplastic tubes from 0 to 180°. The bent tubes are evaluated to obtain their mechanical behaviours and forming limits of the thermoplastic tubes of selected configurations. These will be utilised into a forming limit diagram along with the rapid post-forming process to enable the mass production of complex automotive components such as the body pillars and suspension springs.

University: ANU
Scholarship: ARC Training Centre
Supervisor: Prof. Paul Compston, Dr. Chris Stokes-Griffin & Dr. Richard Taube

Xie Li

Project Title: Selective stiffness modification and performance prediction for AFP composites

Abstract: Automated Fibre Placement (AFP) offers fully automated manufacturing process and excellent tailoring capability at the expense of creating many process-induced defects which significantly increase the modeling complexity. Traditional AFP modeling techniques based on the ply-wise model are very limited in the global elastic stiffness prediction with the assumption that all the tows in-plane are uniform and continuous. However, the effect of these process-induced defects such as gaps, overlaps or tow drops, etc on the performance of the final product is significant. This project primarily targets to develop a more detailed and robust simulation tool for various mechanical performance prediction for AFP composites with the inclusion of physical defects.

University: UNSW
Scholarship: ARC Training Centre
Supervisor: Dr. Garth Pearce and Dr Sonya A Brown

Victoria Zinnecker

Project Title: Optimisation of laser-assisted automated fibre placement (AFP) for manufacture of metal-composite hybrids

Abstract: This project will develop a production-viable AFP process for reinforcement of metallic components with automated placement of unidirectional TPCs. The research will include investigation of surface texturing of metal substrates for optimal laser absorption and metal composite bond quality; metalcomposite interaction with possible adhesive inclusion and/or treatments; thermal modelling and measurements of the bond line temperature history to understand the effects of process parameter settings; and analysis of process constraints, limits of geometrical complexity for automotive part manufacture and cycle times.

University: ANU
Scholarship: ARC Training Centre
Supervisor: Prof. Paul Compston & Dr. Chris Stokes-Griffin

Yiwen GU

Project Title: Abrasive waterjet machining of composites

Abstract: The project will develop a near damage free machining of polymer based composites using abrasive waterjet (AWJ). AWJ machining have shown great advantages in machining composites than traditional mechanical machining. However, AWJ machining induced material damage, especially delamination, is a huge concern. The research will study the machining process and optimise the parameters. Material removal mechanism, mechanics and delamination mechanism during AWJ impact will also be investigated. The research aims to understand the interaction between AWJ and composites and to improve the AWJ machining process.

University: UNSW
Scholarship: ARC Training Centre
Supervisor: Prof. Jun Wang & Prof. Gangadhara Prusty

Veldyanto Tanulia

Project Title: Damage tolerance of bonded patch repairs for primary structures

Abstract: This research will focus on the certification process of bonded patch repair for aircraft primary structures. This study will involve design and development of defect or damage tolerant; assess the suitability along with support to slow damage growth management approach for both standard and taper geometries; satisfy the certification requirement for certification of bonded repairs in primary aircraft structures together with damage tolerance in the safe-life region. The research will support the overall aim of the Centre to integrate certification process of bonded patch repairs through generic specimen designs called the Double Overlap Fatigue Specimen (DOFS) and the Skin Doubler Specimen (SDS) along with the application of composite materials.

University: UNSW
Scholarship: ARC Training Centre
Supervisor: Prof. Gangadhara Prusty & Dr. Garth Pearce
Industry supervisor: Dr. John Wang (DSTG) & Dr. Alan Baker

Puneet Garg

Project Title: Nano-scale materials and coatings for enhancement of functional properties of carbon composites

Abstract: The research will focus on developing and characterizing nano-scale functional coatings for high performance composites applicable to several industry sectors, such as aerospace, automotive and elite sport. It will include, for example, the integration of graphene into polymer matrices to enhance electrical, thermal and mechanical properties; and coatings for controlled surface wetting such, as ultra/super-hydrophobic and super-hydrophilic films, for self-cleaning, anti-icing , and anti-fogging application, and water droplet manipulation. The research will support the overall aim for the Centre to integrate carbon composite tapes with enhanced functionality into the automated manufacturing chain.

University: ANU
Scholarship: ARC Training Centre
Supervisor: A/Prof. Antonio Tricoli & Prof. Paul Compston

Nikhil Garg

Project Title: Failure assessment based design optimisation of AFP manufactured hydrofoil

Abstract: The research focuses on identifying the interface failure of laminated composites using the advanced technique of Scaled Boundary Finite Element Method (SBFEM). SBFEM uses a semi-analytical approach and works appreciably faster than conventional FEM. The research aims to propose a one-stop solution from crack identification to propagation in polymer composite materials and will extend to identify possible avenues of design optimization in case of large hydrofoil structures. The research will support the overall aim for the Centre to integrate simulation findings with enhanced design improvements into the manufacturing of composite structures.

University: UNSW Sydney
Scholarship: ARC Training Centre
Supervisor: Prof. Gangadhara Prusty, Prof. Chongmin Song (Civil) & Dr. Andrew Phillips

Christopher Leow

Project Title: Graphene-enhanced prepreg tapes for thermal and electrical conductivity

Abstract: The focus of this investigation will be the integration of nano-materials into polymer matrices to enhance, electrical thermal and mechanical properties of next-generation composites for applications in aerospace, automotive and elite sports. Bulk and nano-material interactions will be examined to consolidate fundamental knowledge to apply to current and future undertakings.

University: ANU
Scholarship: Australian Government Research Training Program
Supervisor: Prof. Paul Compston & Dr. Peter Kreider

Prashanth Nagulapally

Project Title: Smart monitoring of large structures using distributed fiber optic sensors.

Abstract: This research will focus on the development of optical fibre sensor (OFS) for introduced new possibilities to monitor the mechanical health of the structure. Strain, temperature and pressure are the most widely studied measurands and the fibre grating sensor represents the most widely studied technology for OFS. In the past decade, several R& D studies have been performed with the goal of improving the knowledge and developing new techniques associated with the application of distributed optical fibre sensors (DOFS) in order to widen the range of applications of these sensors and also to obtain more correct and reliable data. Their great advantage is the possibility of monitoring variations of one-dimensional structural physical fields along the entire optical fibre in a truly distributed way. The aim of this research project is to develop a smart structural health monitoring (SHM) application using DOFS and embedded the sensors network into the composite structure for real-time structural assessment and damage detection during manufacturing and in operation.

University: UNSW
Scholarship: ARC training centre
Supervisor: Prof. Gangadhara Prusty & Dr Ginu Rajan