Ms. M. H. Medagedara

Lecturer (Probationary)

B.Sc. Engineering (Hons)(Moratuwa), AMIE (SL), MSLAAS, CIMA Dip Ma

Department of Textile and Apparel Technology
Faculty of Engineering Technology
Website RG GS
Contact:

Colombo Regional Center, Department of Textile and Apparel Technology, 3rd Floor - Science and Technology Building, Open University of Sri Lanka, Nawala, Nugegoda

Office: +942881372, Ext: 310

E-mail: mhmed@ou.ac.lk hansikamedagedara179@gmail.com

Web: https://www.linkedin.com/in/hansikamedagedara/


I completed my B. Sc. Engineering (Hons) Degree from University of Moratuwa with 1st Class honors, specializing in Textile & Apparel Engineering in 2021, with a focus area in Technical Textiles. My professional experience is in the field of Research & Innovation, having worked as an Executive – Technology Entrepreneur at MAS Innovations (Pvt) Ltd  and as an R & D Engineering Intern at the Sri Lanka Institute of Nano Technology (SLINTEC). I joined the Open University of Sri Lanka as a lecturer (probationary) on 04.07.2022.

Areas of Specialization:

Textile Process Engineering, Technical Textiles, Nano Technology

 

Research interests:

Wearable Technology, Textile-based sensor development, Active compression, Nano Technology applications in Textiles, Smart Textiles, Shape Memory Polymers for Textile Applications

Affiliations:
  • Associate Member of the Institute of Engineers Sri Lanka (IESL) – Membership ID: AM-28365
  • Engineering Council of Sri Lanka (ECSL) – Certified Associate Engineer (Registration Number : 215186)
  • Member of the Sri Lanka Association for the Advancement of Sciences (SLAAS) –  Membership ID : 11066/C
  • Student Member of CIMA (Chartered Institute of Management Accountants) – Membership ID : 1-1S5JPA3
  • Member of Moratuwa University Textile Association (MUTA)

 

Course Coordination:
  • TAX 4560 – Woven Fabric Technology
  • TAX 5648 – Fabric Structures & Analysis
  • TAX 6265 – Advanced Weaving Preparations & Machinery
  • TAK 3237 – Introduction to Computer Applications
Awards:
  • Award for the Best Undergraduate Project (Textile & Apparel Engineering Track) for 2021, at MERCON (Moratuwa University Engineering Research Conference) for the project titled “Investigating the feasibility of a real-time sweat analyzing device based on electrospun textiles”
  • Dean’s List Award for Semester 02 – University of Moratuwa
  • Dean’s List Award for Semester 05 – University of Moratuwa
  • Dean’s List Award for Semester 06 – University of Moratuwa
  • Dean’s List Award for Semester 07 – University of Moratuwa
  • Dean’s List Award for Semester 08 – University of Moratuwa
Researches:
  • 2018 – Real-Time Humidity and Temperature Monitoring System for Textile Ware housing and Storage :

This research involved the use of Micro C Programming, Arduino, and integration of DHT11 Humidity and Temperature Sensor for real-time data tracking to monitor the humidity levels of textile warehouses to prevent static charge accumulation on fabric rolls.

  • 2019 – Investigating the feasibility of PANI (Polyaniline) in situ polymerized textiles as a strain indicator, through conductivity analysis :

This research was aimed at addressing the strain variations imposed on a pediatric passenger, while wearing a seatbelt through measuring the imposed strain as a conductivity value. Conductivity on the textile substrate was achieved through in situ grafting of PANI Nano fibers.

  • 2020 – A conceptual design of an SMP (Shape Memory Polymer) reinforced knitted spacer structure for ballistic defense :

This research focused on developing a conceptual model and design for a shape memory polymer reinforced knitted spacer structure, where the impact energy is to be absorbed by the polymeric yarn, when the thermal energy raises the temperature of the SMP above its glass transition temperature. A theoretical model was developed to establish the fabric parameters of the structure to facilitate the purpose while, a comprehensive design methodology, including determining the SMP was introduced for the design of the ballistic protection structure. Additionally, a MATLAB simulation was conducted to model the relationship between the dissipated heat energy and the required fabric parameters.

  • 2020/2021 – The Design and development of an electro spun textile integrated device for real-time, non-invasive, health-monitoring :

The feasibility of capturing the corresponding variations in the surface resistivity of a textile platform, due to variations in the sweat composition was investigated in this research project, through the fabrication of a smart wearable platform. Effective moisture management through the platform was achieved and validated using a plain knit, three-layered sandwich structure. Surface conductivity was incorporated through a PCL electrospinning/ RGO dip coating process, which demonstrated satisfactory surface morphology under SEM and Optical Microscopy analysis. The relationship between the macro porosity of the textile platform and the surface conductivity was mathematically modeled and simulated, concluding that variations in the localized surface area for sweat accumulation and the fabric weight of the textile platform has minimal effect on the performance and accuracy, while a satisfactorily measurable surface conductivity value can be obtained at concentration levels in the order 0.01M. The corresponding surface conductivity values were successfully measured in terms of voltage variations through integration of a micro-controller and uploaded to an IOT platform to facilitate continuous monitoring.

 

 

Ongoing Research:

Design and development of textile based surface EMG (Electromyography Sensors for active compression

Publications:
  • *Medagedara M., “Real-time Humidity Monitoring Systems for Textile Warehouses”. In Scientific Sessions of Sri Lanka Association for Advancement of Sciences, 75th Annual Sessions, Colombo, Sri Lanka, 2019.
  • *Medagedara M., Pemachandra, H., “Investigating the feasibility of a PANI Nano Fibre Grafted Conductive Fabric as a Strain Indicator in Seat-belts”. In Scientific Sessions of Sri Lanka Association for Advancement of Sciences, 76th Annual Sessions, Colombo, Sri Lanka, 2020.
  • *Medagedara M., Pemachandra, H., “Investigating the Feasibility of a Conductive Textile Structure to indicate Pre-tensioning of Seat-belts”. In: SLAAS/SLIC Conference on “From Innovation to Impact”, Colombo, Sri Lanka, 2020. With proceedings to IEEExplore Digital Library. – Scopus Indexed https://ieeexplore.ieee.org/author/37088952740
  • *Medagedara M., Peiris T., Wanasekara, N., “Review of Recent Advances in Non-invasive, Flexible, Wearable Sweat Monitoring Sensors”. In: The Journal of Instrumentation of China Association for Science and Technology: Volume 7, Issue 2, pg 36-50 (2020). ISSN:2095-7521 – http://www.instrumentationjournal.com/inst/
  • *Medagedara M. “A Conceptual Design of an SMP Reinforced Knitted Spacer Structure for Ballistic Defense”. In: The Journal of Instrumentation of China Association for Science and Technology: Volume 7, Issue 3, pg 61-66 (2020). ISSN:2095-7521 – http://www.instrumentationjournal.com/inst/
  • Medagedara M., Peiris T., Wanasekara, N.,2021. “Modeling Surface Conductivity in a Sweat Analyzing Wearable Smart Textile Platform” In: “MERcon 2021, 7th International Multidisciplinary Engineering Research Conference”. With proceedings to IEEExplore Digital Library. – Scopus Indexed. – https://ieeexplore.ieee.org/document/9525788
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