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Home / 2018 / May / 08 / Researchers improve textile composite manufacturing
Research

Researchers improve textile composite manufacturing

May 8, 2018

Engineering professor Abbas Milani and graduate student Armin Rashidi use 3D scanning equipment to analyze textile composites.

Engineering professor Abbas Milani and graduate student Armin Rashidi use 3D scanning equipment to analyze textile composites.

UBC engineers iron out the wrinkles in producing strong and durable materials

While wearing a crisply ironed, wrinkle-free shirt makes a good impression, researchers at UBC’s Okanagan campus are working to solve the issue of wrinkling when it comes to making textile composites.

Textile composites are known for their strength and durability. But as Abbas Milani, a professor in UBC Okanagan’s School of Engineering explains, a simple wrinkle in the manufacturing process can significantly alter the end product—sometimes diminishing its strength by 50 per cent.

Milani says wrinkling is one of the most common flaws in textile composites, which are widely used for prototypes, as well as mass production within prominent aerospace, energy, automotive and marine applications.

To iron out the problem, researchers at UBC’s Composite Research Network-Okanagan have investigated several de-wrinkling methods and have discovered that they can improve their effectiveness by pulling the materials in two directions simultaneously during the manufacturing process. They did this by creating a custom-made biaxial fixture—a clamp that stretches the textile taught and removes unwanted bumps and folds.

“The challenge was to avoid unwanted fibre misalignment or fibre rupture while capturing the out-of-plane wrinkles,” says graduate student Armin Rashidi. “Manufacturers who use these types of composites are looking for more information about their mechanical behaviour, especially under combined loading scenarios.”

The research included stretching the material and then using specialized image processing and 3D scanning to analyze the required forces and its impact on the wrinkling and de-wrinkling of the material.

“Composite textiles are changing the way products are designed and built in advanced manufacturing sectors,” says Milani, director of the Materials and Manufacturing Research Institute. “As we continue to innovate in the area of composite textiles to include more polymer resin and fibre reinforcement options, this research will need to continue in order to provide the most up-to-date analysis for manufacturers in different application areas.”

It is important for designers to be able to predict the right amount of force needed to diminish the wrinkles in the final product, explains Milani. To do this, his team of students has created a multi-step test to assess the magnitude of the required forces needed to smooth out wrinkles of different sizes that were formed at different shear angles of a comingled fibreglass-propylene plain weave fabric.

“Students in the Composites Research Network laboratory at UBC Okanagan are laying the groundwork to be world leaders in advanced textile composites by designing, fabricating and examining new testing equipment and fixtures, along with the development of high fidelity forming models.”

The research, recently published in the Materials & Design journal, was partially funded by the Natural Science and Engineering Research Council.

Media Contact

Nathan Skolski
Associate Director, Public Affairs
University Relations

The University of British Columbia
Okanagan campus
Tel: 250 807 9926
E-mail: nathan.skolski@ubc.ca

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About UBC Okanagan

UBC’s Okanagan campus is an innovative hub for research and learning founded in partnership with local Indigenous peoples, the Syilx Okanagan Nation, in whose traditional, ancestral and unceded territory the campus resides. The most established and influential global rankings all consistently place UBC in the top five per cent of universities in the world, and among the top three Canadian universities.

The Okanagan campus combines a globally recognized UBC education with a tight-knit and entrepreneurial community that welcomes students and faculty from around the world in British Columbia’s stunning Okanagan Valley. For more visit ok.ubc.ca.

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