Art and Design Commons^™

Auxetic Structures From 3d Printed Hybrid Textiles, Subin Shajoo, David Schmelzeisen, Christopher Pastore

Kanbar College Faculty Papers

Auxetic structures have been produced using 3D printing and knitted textile materials. A review of other auxetic textiles is presented along with the new materials. A range of configurations were developed, prototyped, and tested to demonstrate significant auxetic response, including Poisson’s ratio up to negative one. The concept of 4D textiles was employed to create environmentally responsive hinges in some structures, allowing the material to change shape in response to thermal stimulus.

Measurement Of Antibacterial Properties Of Foil‑Backed Electrospun Nanofibers, Mary Ann Wagner-Graham, Herbert Barndt, Mark Andrew Sunderland

College of Life Sciences Faculty Papers

Current methodologies for evaluation of antibacterial properties of traditional textiles are not applicable to foil‑backed, poorly‑absorbent electrospun nanofiber materials, since existing test methods require absorbent fabrics. Since electrospun nanofibers are adhered to the foil backing only by electrostatic interactions, methods used to evaluate antibacterial properties of surfaces cannot be used because these protocols cause the nanofibers to lift from the foil backing. Therefore, a novel method for measurement of the antibacterial properties of electrospun metallic foil‑backed nanofiber materials was developed. This method indicated that acetate‑based nanofibers manufactured to contain 5 to 30 weight percent of cold‑pressed hemp seed oil or …

Effect Of Knit And Print Parameters On Peel Strength Of Hybrid 3-D Printed Textiles, Ayushi Narula, Christopher M. Pastore, David Schmelzeisen, Sara El Basri, Jan Schenk, Subin Shajoo

Kanbar College Faculty Papers

The influence of knit fabric structure on the adhesion of three-dimensional (3-D) printed textiles was examined. 3-Dprinting was applied to different elastic knitted fabrics with different amounts of prestretch, typical for 4-D fabric construction. The quality of the bond was measured in terms of peel strength. Peel strength was measured by pulling the fabric at 180 degrees from the printed plastic to delaminate the 2 and recording the 10 highest peak values observed during the test. The printed width, the ratio of fabric width of print width, fabric washing, and fabric structure were varied. The specimens were then evaluated for …

Tailored Material Properties Using Textile Composites, Christopher M. Pastore

Kanbar College Faculty Papers

Lightweighting is essential for the reduction of energy consumption in transportation. The most common approach is through the application of high specific strength and stiffness materials, such as composites and high performance aluminum alloys. One of the challenges associated with the use of advanced materials is the high cost. This paper explores the opportunities of using hybrid composites (glass and carbon, for example) with selective fiber placement to optimize the weight subject to price constraints for given components.

Considering the example of a hat-section for hood reinforcement, different material configurations were modeled and developed. The required thickness of the hat …

Design Of Barrier Coatings On Kink-Resistant Peripheral Nerve Conduits., Basak Acan Clements, Jared Bushman, N. Sanjeeva Murthy, Mindy Ezra, Christopher M. Pastore, Joachim Kohn

Kanbar College Faculty Papers

Here, we report on the design of braided peripheral nerve conduits with barrier coatings. Braiding of extruded polymer fibers generates nerve conduits with excellent mechanical properties, high flexibility, and significant kink-resistance. However, braiding also results in variable levels of porosity in the conduit wall, which can lead to the infiltration of fibrous tissue into the interior of the conduit. This problem can be controlled by the application of secondary barrier coatings. Using a critical size defect in a rat sciatic nerve model, the importance of controlling the porosity of the nerve conduit walls was explored. Braided conduits without barrier coatings …