Miss. J. Sajeeva

Lecturer (Probationary)
Department of Mechanical Engineering

B.Sc. Engineering (Hons)(UOM), AMIE(SL)

Research interests : Sustainable Textile Engineering,
Functional Clothing,Composite Materials,Waste Management in Textile Industry,
Wearable Technology,Renewable Energy Technologies


Meet Sajeeva Jeyakumar, a highly accomplished professional with a diverse background in Textile and Process Engineering. Graduating with honors (B.Sc. Eng) from the University of Moratuwa, Sri Lanka, Sajeeva's educational journey laid a strong foundation for an outstanding career.

Sajeeva's career spans various roles, including a Senior Executive Industrial Engineer at Hirdaramani Knit Vavuniya and a Management Trainee at Hirdaramani Knit Cluster. These experiences showcase their strong problem-solving skills and commitment to process improvement. She also holds certifications in Project Management and Six Sigma.

Currently, Sajeeva is a Lecturer at the University of Jaffna, actively involved in teaching, research, and project management. Notably, she serving as the Joint Secretary of the THREE Lanka Project, funded by Erasmus.

Connect with Sajeeva to explore her career and impactful projects, including her involvement in the THREE Lanka Project.

Course Units Taught

  1. Materials Science for Engineering (ID2020)
  2. Materials Engineering and Manufacturing Technology (MP4040)
  3. Process Engineering (MP5040)
  4. Production Planning and Control (ID9030)
  5. Industrial Engineering (ID9041)
  6. Active Citizenship (MC9160)

  • Joint Secretary – Project THREE Lanka (Funded by Erusmus).
  • Associate Member of Institution of Engineers Sri Lanka (AM-28115).
  • Associate Engineer, Engineering Council of Sri Lanka (Registration Number - 214852).
  • Member of International Association of Engineers, Hong Kong (Membership Number277624).


1.Design and Fabrication of Sustainable Mechanical Components using Textile Fabric Waste (April 2023 – Present)
A research proposal has been put forth with the aim of developing a methodology to seamlessly incorporate textile fabric waste into mechanical components. The primary objectives are the enhancement of structural integrity, reduction of environmental impact, and the provision of cost-effective solutions.
2. Producing Functional Fabrics with Herbal Extracts Used in Siddha Medicine (March 2023 – Present)
A research proposal has been initiated to explore the potential of herbal extracts utilized in Siddha medicine as natural dyes to produce functional fabrics. The emphasis is on achieving optimized colour fastness and functional properties.
3. Effect of Multi-Directional Orientation on Mechanical and Thermal Properties of Banana Yarn-Reinforced Composites (Sept 2022 – Present)
Ongoing research endeavors aim to develop cheese cloths manufactured from Banana yarn with varying end per inch (EPI) and picks per inch (PPI). These cheese cloths will serve as reinforcement materials for manually cast composites. Subsequently, thorough testing and evaluation of mechanical properties are undertaken.
4. Investigating the Mechanical Properties of Hollow Tubular Braided Natural Fiber Composites (April 2022 – Dec 2022)
During the specified timeframe, an exploration was conducted into the mechanical properties of hollow tubular braided natural fibre composites. It was observed that coconut coir samples, measuring 20mm in diameter and comprising 32 ends, exhibited the highest strength, measuring 35.55 GPa. This surpassed the strengths exhibited by banana fibre and jute fibre samples, which measured 16.81 GPa and 13.54 GPa, respectively, in accordance with ASTM-D 3039/D standards.
5. Automatic Air Inflate Tubeless Safety Jacket for Motorbike Riders (April 2019 – Jan 2020)
In the realm of wearable technology, a safety jacket designed for motorbike riders was developed. This innovative technology integrates sensors, electronic control units, receivers, transducers, and sodium and potassium nitrate. Extensive testing was conducted to evaluate properties such as seam strength during a fall and inflation time, all with the goal of enhancing rider safety.
6. Natural Water Filter Cloth (Dec 2018 – Feb 2019)
A natural water filter was designed using needle-punched coconut coir and banana peel fiber. The filter exhibits the capability to effectively remove murkiness, pollutants, and bacteria, thus addressing water purification challenges.
7. Sustainable Textile Industry with Garment Dyeing (December 2018 – February 2019)
Sustainability challenges within the textile industry, notably the environmental impact of dyeing and finishing, were scrutinized in the literature review. Additionally, the review identified garment dyeing as a potential solution for the intimate industry and proposed the utilization of compatible materials for intimate apparel, enabling garment dyeing through a streamlined process.
8. A Letter Box with an Indication System (Feb 2017 – May 2017)
A solution was developed to reduce the time wasted on checking empty mailboxes and enable immediate responses to important letters. Motion sensors, LED bulbs, and sound indicators were used to notify users of the presence of letters, making daily manual checks unnecessary.


Her research interests are:

  • Sustainable Textile Engineering
  • Functional Clothing
  • Composite Materials
  • Waste Management in Textile Industry
  • Wearable Technology
  • Renewable Energy Technologies