Raymond J. Cipra

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In recent years, 3D printing has gained significant attention from the maker community, academia, and industry to support low-cost and iterative prototyping of designs. Current unidirectional extrusion systems require printing sacrificial material to support printed features such as overhangs. Furthermore, integrating functions such as sensing and actuation(More)
Origami affords the creation of diverse 3D objects through explicit folding processes from 2D sheets of material. Originally as a paper craft from 17th century AD, origami designs reveal the rudimentary characteristics of sheet folding: it is lightweight, inexpensive, compact and combinatorial. In this paper, we present “HexaMorph”, a novel(More)
The high sound transmission loss (STL) metamaterials that have been suggested to-date commonly require the introduction of relatively heavy resonating or constraining components which limit the applicability of these solutions in typical noise control applications where it is desirable to minimize the treatment mass at a given STL. Here it is proposed that(More)
This is to certify that the thesis/dissertation prepared By Entitled For the degree of Is approved by the final examining committee: Chair To the best of my knowledge and as understood by the student in the Research Integrity and Copyright Disclaimer (Graduate School Form 20), this thesis/dissertation adheres to the provisions of Purdue University's "(More)
Over the past few years, academic institutions have become aware of the importance of innovation in education, as well as its broader role in strengthening the economy. Creativity and innovative thinking are not easily taught in the classroom, but they can be developed through practice and experience. Evaluating innovation as part of product design courses(More)
In composite manufacturing the knowledge and control of reinforcement orientation distributions is of central importance. The use of vision and image analysis techniques can greatly aid the production of composites by providing real time data regarding fiber orientation and distribution throughout a part. This acquisition of fiber orientation and position(More)
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