Industrial & Manufacturing Engineering Masters Papers

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    Experimental Study of the Temperature Profile of a Gaussian Type Heat Distribution
    (North Dakota State University, 2020) Mare, Sunny Prashant
    In research aimed at studying the laser microwelding of thermoplastic materials, two theoretical heat flow models were studied by Dr. Grewell. In the surface temperature profile based on the Gaussian type distributed heat source model, two peak temperatures were predicted. The purpose of the current project was to develop a controlled test environment to study the surface temperature profile of a thermoplastic material using a Gaussian type heat source and to validate the prediction of the inflection point in the plastic sample. One of the key results of the initial experimentation was the lack of a Gaussian distribution of the infrared lamp used as a heat source. This limitation was addressed by first employing a thermal camera and then later a laser system. The observation of two peak temperatures was not substantiated with the experimentations conducted in this study.
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    A Review of Wheat Gluten-Based Bioplastics Processing and Their Applications
    (North Dakota State University, 2021) Abdullah-Al-Rahim, Md
    Bioplastics produced from agricultural resources are gaining attraction in recent years because of their sustainability and potential biodegradability. Wheat gluten (a wheat protein) is among the potential feedstocks, which stands out because of its availability, low price, good biodegradability, and good viscoelastic properties. This paper provides state-of-art information on the processing of wheat-based bioplastics with their potential applications. It gives an overview of the structure of wheat gluten, its manufacturing processes (casting, thermoforming, extrusion, compression molding, injection molding), thermal-mechanical properties (tensile strength, elongation at break, young’s modulus, water vapor pressure, gas permeability, etc.) of processed plastic films and rigid products, methods to improve the properties, potential applications (packaging, biomedical, adhesives, cosmetics), and limitations and prospects of wheat-based bioplastics.