Title:

Distributed Cyber Manufacturing Case Study

The distributed cyber manufacturing case study was introduced by Professor Kinsey and Professor Ha at the beginning of the COVID-19 pandemic. The face shields provided by UNH were distributed by the Portsmouth Naval Shipyard to essential workers. Multiple materials showed inconsistences in the headbands across different printers. In response to varying material properties, the team launched a case study into distributed, cyber manufacturing to understand the spread and shared technological information applied to manufacturing products. The material properties found in the 17 3D printers across campus were used to create a force vs displacement diagram of each material: PLA, ABS, PETG and ASA. The plots of the model were then compared to a CAD model created in SolidWorks of a simplified headband geometry. The analytical plots were then compared to a compression test of the headbands. To recognize the variance in material properties across objects when printed from varying printers, ABS tensile test specimens and headbands were printed on 3 different printers. Using the headband geometry, an analytical model was generated in MATLAB to predict force vs. displacement results using cross-sectional area of headband.

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