Search Results - "Long, Kevin N."

3D Printing of Liquid Crystal Elastomer Foams for Enhanced Energy Dissipation Under Mechanical Insult by Luo, Chaoqian, Chung, Christopher, Traugutt, Nicholas A, Yakacki, Christopher M, Long, Kevin N, Yu, Kai

“…Polymer foams are an essential class of lightweight materials used to protect assets against mechanical insults, such as shock and vibration. Two features are…”
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The kinetics of polyurethane structural foam formation: Foaming and polymerization by Rao, Rekha R., Mondy, Lisa A., Long, Kevin N., Celina, Mathew C., Wyatt, Nicholas, Roberts, Christine C., Soehnel, Melissa M., Brunini, Victor E.

“…Kinetic models have been developed to understand the manufacturing of polymeric foams, which evolve from low viscosity Newtonian liquids, to bubbly liquids,…”
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Photo-induced deformation of active polymer films: Single spot irradiation by Long, Kevin N., Scott, Timothy F., Dunn, Martin L., Jerry Qi, H.

“…Light-activated polymers can undergo complex deformation in response to the combination of mechanical and optical stimuli. These materials are attractive for…”
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Improved testing system for thermomechanical experiments on polymers using uniaxial compression equipment by Westbrook, Kristofer K., Castro, Francisco, Long, Kevin N., Slifka, Andrew J., Qi, H. Jerry

“…This paper presents an improved testing system for isothermal and thermal-cycling experiments of polymers in compression. Due to the low thermal conductivity…”
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Calibrating constitutive models with full‐field data via physics informed neural networks by Hamel, Craig M., Long, Kevin N., Kramer, Sharlotte L. B.

“…The calibration of solid constitutive models with full‐field experimental data is a long‐standing challenge, especially in materials that undergo large…”
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Predicting the counter-intuitive stress relaxation behavior of glass forming materials by Kropka, Jamie M., Long, Kevin N.

“…The ability to relax a macroscopically applied stress is often associated with molecular mobility, or the possibility for a molecule to move outside the…”
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The mechanics of network polymers with thermally reversible linkages by Long, Kevin N.

“…Network polymers with thermally reversible linkages include functionalities that continuously break and form covalent bonds. These processes dynamically change…”
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Failure of brittle micro-spherical shells embedded in elastomer matrix under indentation by Lu, Yinan, Carroll, Jay D., Long, Kevin N., Long, Rong

“…Silicone elastomer filled with glass micro balloons (GMB) is an elastomeric syntactic foam used in electronics and component packaging for encapsulation,…”
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A thermoviscoelastic model for amorphous shape memory polymers: Incorporating structural and stress relaxation by Nguyen, Thao. D., Jerry Qi, H., Castro, Francisco, Long, Kevin N.

“…A thermoviscoelastic constitutive model is developed for amorphous shape memory polymers (SMP) based on the hypothesis that structural and stress relaxation…”
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Comparing field data using Alpert multi-wavelets by Salloum, Maher, Karlson, Kyle N., Jin, Helena, Brown, Judith A., Bolintineanu, Dan S., Long, Kevin N.

“…In this paper we introduce a method to compare sets of full-field data using Alpert tree-wavelet transforms. The Alpert tree-wavelet methods transform the data…”
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Photomechanics of light-activated polymers by Long, Kevin N., Scott, Timothy F., Jerry Qi, H., Bowman, Christopher N., Dunn, Martin L.

“…Light-activated polymers are an exciting class of modern materials that respond mechanically when irradiated by light at particular wavelengths. While details…”
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Mechanics of soft active materials with phase evolution by Long, Kevin N., Dunn, Martin L., Jerry Qi, H.

“…This paper studies the mechanics of soft active materials where the actuation is generated due to the formation of phases that are stress-free at the moment of…”
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Lie-group interpolation and variational recovery for internal variables by Mota, Alejandro, Sun, WaiChing, Ostien, Jakob T., Foulk, James W., Long, Kevin N.

“…We propose a variational procedure for the recovery of internal variables, in effect extending them from integration points to the entire domain. The objective…”
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Exploring pressure-dependent inelastic deformation and failure in bonded granular composites: An energetic materials perspective by Clemmer, Joel T., Long, Kevin N., Brown, Judith A.

“…In polymer-filled granular composites, damage may develop in mechanical loading prior to material failure. Damage mechanisms such as microcracking or plastic…”
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Photo-origami-Bending and folding polymers with light by Ryu, Jennie, D'Amato, Matteo, Cui, Xiaodong, Long, Kevin N., Jerry Qi, H., Dunn, Martin L.

“…Photo-origami uses the dynamic control of the molecular architecture of a polymer by a combination of mechanical and non-contact optical stimuli to design and…”
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Numerical modeling and experimental validation of low velocity impact of woven GFRP/CFRP composites by Sommer, Drew E, Berkowitz, Katherine, Werner, Brian T, Long, Kevin N, Skulborstad, Alyssa J

“…Low-velocity impact of 2D woven glass fiber reinforced polymer (GFRP) and carbon fiber reinforced polymer (CFRP) composite laminates was studied experimentally…”
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On the effect of strain rate during the cyclic compressive loading of liquid crystal elastomers and their 3D printed lattices by Song, Bo, Landry, Dylan, Martinez, Thomas, Chung, Christopher N., Long, Kevin N., Yu, Kai, Yakacki, Christopher M.

“…Nematic liquid crystal elastomers (LCEs) are a unique class of network polymers with the potential for enhanced mechanical energy absorption and dissipation…”
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Calibrating constitutive models with full‐field data via physics informed neural networks by Hamel, Craig M., Long, Kevin N., Kramer, Sharlotte L. B.

“…Abstract The calibration of solid constitutive models with full‐field experimental data is a long‐standing challenge, especially in materials that undergo…”
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3D Printing of Liquid Crystal Elastomer Foams for Enhanced Energy Dissipation Under Mechanical Insult by Luo, Chaoqian, Chung, Christopher, Traugutt, Nicholas A., Yakacki, Christopher M., Long, Kevin N., Yu, Kai

“…Polymer foams are an essential class of lightweight materials used to protect assets against mechanical insults, such as shock and vibration. Two features are…”
Get full text

3D Printing of Liquid Crystal Elastomer Foams for Enhanced Energy Dissipation Under Mechanical Insult by Luo, Chaoqian, Chung, Christopher, Traugutt, Nicholas A., Yakacki, Christopher M., Long, Kevin N., Yu, Kai

“…Polymer foams are an essential class of lightweight materials used to protect assets against mechanical insults, such as shock and vibration. Two features are…”
Get full text