Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 200 for “"Energy absorption"”.
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Microtruss Design for Strength and Energy Absorption
… irreversible phenomena, i.e. strength and energy absorption. Microtruss materials are used as a platform for the study as their individual building units, i.e. struts, possess uniform geometry, known properties, and can be tuned to achieve a desired level of performance; a much simpler task …
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Energy absorption in Ni-Mn-Ga/ polymer composites
… mechanical hysteresis. This ability to dissipate energy makes this alloys very desirable for damping applications, and by putting particles of Ni-Mn-Ga in a composite, their brittleness becomes less of an issue.
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Energy Absorption of Metal-FRP Hybrid Square Tubes
… of composite materials in vehicles is in energy-absorbing components such as hollow shells and struts (these components may be in the form of circular cylindrical shells, square and rectangular tubes, conical shells, and frusta). However, constructions which result in brittle fracture of …
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Energy-absorption capability of composite tubes and beams
… was to develop a method of predicting the energy-absorption capability of composite subfloor beam structures. Before it is possible to develop such an analysis capability, an in-depth understanding of the crushing process of composite materials must be achieved. Many variables affect the …
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Energy Absorption Capacity of Graphite-Epoxy Composite Tubes
The energy absorption capacity of a series of axially crushed composite tubes fabricated from high tow count graphite fiber is compared with those of similar tubes fabricated from aerospace-grade fiber to determine the viability of considering the use of such fibers in automotive applications. To …
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Impact and energy absorption of laminated and sandwich composites
… summarized for laminated composites after low-energy impacts.
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Energy absorption methods for fluid quantity gauging in low gravity
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Energy Absorption and Dynamic Behaviors of Architectured Interpenetrating Phase Composites
… a micromechanics-based model of tensile specific energy absorption, which we then use in a parametric study on the effects of geometric parameters and matrix properties on tensile behavior. We predict that ceramic chain lattices can achieve an order-of-magnitude improvement in tensile specific …
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Energy Absorption and Progressive Failure Response of Composite Fuselage Frames
… role in the process of absorbing the impact energy in the crushing of the substructure below the main passenger deck. Hence, static tests are performed on individual circumferential frames under a radially inward load to assess their progressive failure response and energy absorption …
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Measurement of energy absorption and ionization in carbon for betatron radiation
… by Bernier in his earlier measurements of the energy required to produce an ion pair in air for Co60 radiation (Bernier 1956). Only slight modifications of the experimental procedure were necessitated by difficulties peculiar to the use of betatron radiation.
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Exciton-like behavior in low-energy absorption spectra of simple alloys
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-07T16:07:50Z No. of bitstreams: 1 1984_bakshi.pdf: 3621630 bytes, checksum: ba96b4397a92b0e178784881f3ea82a3 (MD5)
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Energy absorption of reticulated foams filled with shear-thickening silica suspensions
The need for smarter and adaptive, energy absorption materials especially for human protection applications has fueled the interest in new and alternative energy absorbing composites. In this thesis a 'novel' energy absorbing fluid-composite that utilized a shear thickening fluid is developed. …
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Energy absorption and vibrational heating in molecules following intense laser excitation.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Physics.
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Additively manufactured aluminium auxetic architecture with targeted mechanical and energy absorption characteristics
… that offers stiffness (E), strength (𝜎𝑡) and energy absorption characteristics suitable for a targeted scenario. The primary objective is to create a framework that integrates numerical modelling, multi-criteria decision-making, and optimisation tools to generate scenario-based auxetic …
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Energy absorption performance of braided basalt reinforced composite tubes under axial loads
… higher potential to provide both demands of high energy absorption capacity as well as light-weighting structure. Due to the recent environmental awareness, natural basalt fibre has been getting more demand and interest from preform manufacturers. Hence, the aim of this research is devoted to the …
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Probing Power-Absorbing Structures at Near-Infrared Wavelengths using Energy Absorption Interferometry
Energy Absorption Interferometry was recently proposed as an interferometric technique capable of fully characterizing the optical response of single-mode, few-mode and multi- mode power-absorbing structures, such as near-infrared detectors. A detector’s output can be written as the full spatial …
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Extreme energy absorption : the design, modeling, and testing of negative stiffness metamaterial inclusions
… capable of passively suppressing vibro-acoustic energy. Relevant recent research has shown that it is possible to produce composite materials whose macroscopic mechanical stiffness and loss properties surpass those of conventional composites through the addition of trace amounts of materials …
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Speed and Temperature Effects in the Energy Absorption of Axially Crushed Composite Tubes
… and are capable of exhibiting high levels of energy absorption, particularly when related to the material mass involved. Polymers are known to display viscoelastic behaviour and polymer composites are similarly sensitive to test speed and temperature. Energy absorption in tube crushing has …
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