Scholarship & Research
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Item The material verse agency of the innate(Montana State University - Bozeman, College of Arts & Architecture, 2019) Levy, Matthew John; Chairperson, Graduate Committee: Dean AdamsAs technology advances, people around the world are losing, to a large degree, the material intelligence that once allowed humanity to engage and create from the world around them. In the field of ceramics alone more artists have streamlined their understanding of process and even the very nature of the substances they use daily, such as clay. I believe that by sourcing and processing local materials, if not indigenous to the area in which I live, Bozeman Montana, I can create works that speak directly to the landscape in which these materials are found. Further, by understanding the very chemical makeup of these rocks and clays I can develop ways to display these elements, such as copper, iron and manganese through installation art and utilitarian vessels. Creating installation art made of raw, unprocessed clay and supported by internal steel frames, I sought to display the plasticity of clays along with their inherent weaknesses which are exposed as the materials dry and crack apart. In addition, I created modular tiles made from fused, crushed rock sourced from the area surrounding Butte, Montana. These modular panels and pavers speak to the latent abilities of refractory minerals like Silica, Alumina and Feldspar to melt at lower temperatures when combined together. Called a eutectic, this phenomenon is crucial for the creation of ceramic materials and glazes. In conjunction with installation-based art, I have shared my understanding of materiality by 'stretching' crushed rocks like granites and even man-made mining byproducts such as copper slag as glazes over utilitarian vessels. As a glaze the metals and other elements found in these materials create rich and vibrant surfaces, speaking to the landscapes from which they are found. Finally, in this paper, I will discuss how a deeper understanding of materiality is essential to humanity's advancement and how the very agency that these inanimate objects invoke is larger than we perceive.Item Validation of high strain rate, multiaxial loads using an in-plane loader, digital image correlation, and FEA(Montana State University - Bozeman, College of Engineering, 2018) Stroili, Christopher; Chairperson, Graduate Committee: David A. MillerMontana State University's In-Plane Loader (IPL) is a machine designed to test for mechanical properties at multi-axial states of stress and strain by in-plane translation and rotation. Historically the machine has been used to characterize composite lay-ups, where applying multi-axial loads can better describe anisotropic materials. The IPL testing machine uses Digital Image Correlation (DIC) software and a stereoscopic camera system to measure strains on the surface of the test coupon by tracking a stochastic pattern applied to the gage section. The focus of this work was to test the capabilities beyond quasi-static composites testing, specifically looking to explore the feasibility of testing plastics and metals at strain rates from 10 0 to 10 3 s -1. This work explored the speed and loading capabilities of the IPL and determined a suitable coupon geometry which balances gage section area with material strength. 304 Stainless Steel was tested both on the IPL and in uniaxial tension. Experimental tensile test data was fit to a Johnson Cook strain rate sensitive constitutive model. This constitutive equation was then used with an implicit dynamic finite element analysis (FEA) model. To study the validity of high rate testing of steel in the IPL, strain from the DIC experimental data was compared with the FEA results. While the strains predicted by the FEA model varied from experimental results, a better understanding of the IPL capabilities has been achieved. Moving forward, a series of recommendations have been made so that high strain rate multi-axial testing of metals can be implemented with more robust constitutive models.Item Determination of elastic and optical properties of thin plates and investigation of the mechanisms involved in the laser generation of ultrasound(Montana State University - Bozeman, College of Engineering, 1991) Hurley, David Howard