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 243 for “"diaphragm"”.
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Seismic strengthening by providing structural diaphragm
… scheme is proposed to add a structural diaphragm at the roof level by adding diagonal bracing. With the diaphragm action developed, the lateral forces can be transmitted among the cantilever columns, and to the vertical diagonal braces on the periphery, thus the seismic performance can …
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The performance of diaphragm type cellular cofferdams
… of cofferdam geometry. It is common to use diaphragm type cofferdams. To asses the validity of common failure mechanisms associated with cellular cofferdams when applied to diaphragm type cofferdams, a series of numerical modelling analyses were conducted. These were validated using field …
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Micro Electrostatic Actuation of a Silicon Diaphragm
… pumps, which utilize micro-scale actuating diaphragms. These MEMS (micro-electromechanical system) devices can be actuated by electrostatic forces, which utilize an induced electric field to pull two charged plates towards one another. Such devices were fabricated and electrostatic actuation …
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A model for the diaphragm forming process
The diaphragm forming process is a potential manufacturing method for advanced thermoplastic matrix composites. This process involves stacking continuous fiber reinforced thermoplastic prepregs in an arbitrary sequence to form a laminate. Polymeric diaphragms are placed on top and bottom of the …
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Behavior of deep excavation with diaphragm wall
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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Diaphragm dysfunction in COPD - Involvement of the myofilaments
Contains fulltext : 50641.pdf (Publisher’s version ) (Open Access)
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Diaphragm control in inflated tool forming of composites
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Diaphragm forming : innovation and application to ocean engineering
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994.
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Effects of beta-2 adrenoceptor agonists on the diaphragm
Contains fulltext : 146605.pdf (Publisher’s version ) (Open Access)
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The design of a non-diaphragm calcium chlorate cell
The purpose of this investigation was to study the behavior during electrolysis of the waste from the ammonia recovery still of the Solvay Process. Data was obtained to show the effect on chlorate formation of the variables; temperature, concentration of electrolyte, and current concentration. In …
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Design verification of a diaphragm wall with steel piles
A study was conducted to verify the design of a diaphragm wall with steel piles. The original design was based on analysis performed on a soil-structure interaction program using soil parameters calibrated in a previous study. Original and "as-built" design models were compared to measured results …
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Diaphragm dysfunction in heart failure from myofilaments to pharmacological targets.
Contains fulltext : 74410.pdf (Publisher’s version ) (Open Access)
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Application of a porous diaphragm in a calcium electrowinning cell
Includes bibliographical references (pages 105-109).
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A Soft Robotic System for Mechanical Assistance to the Diaphragm
The diaphragm is a critical muscle for the respiratory system, responsible for up to 70% of the inspiration effort. Phrenic nerve trauma or neuromuscular disease can generate severe diaphragm dysfunction that ultimately leads to respiratory failure. The current treatment for patients with severe …
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Deep Deck and Cellular Deck Diaphragm Strength and Stiffness Evaluation
Twenty cantilever diaphragm tests were performed in the Structures and Materials Laboratory at Virginia Tech. The tests included both deep deck and cellular deck profiles with varying structural and side-lap connections. The tests were conducted with three different structural connections: screws, …
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Finite Element Analysis of the Deformation of a Rubber Diaphragm
Several rubber diaphragms, of the same type used inside an hydraulic accumulator, failed a short time after they were mounted. While there is nothing special with these failures the cost, in some cases can be high. A closer look, at the damaged diaphragms reveal an interesting nonsymmetric radial …
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A Composite Material-based Computational Model for Diaphragm Muscle Biomechanical Simulation
… model that predicts the deformation field of the diaphragm muscle during respiration. The first part of the project involved developing an accurate and adaptable micro-to-macro mechanical approach for skeletal muscle tissue modelling for application in a FE solver. The next objective was to …
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Inelastic Seismic Response Of Reinforced Concrete Buildings With Floor Diaphragm Openings
… loads to the lateral load resisting systems by diaphragm action. In reinforced concrete buildings, the in-plane flexibility of the floor diaphragms is often ignored for simplicity in practical design: i.e., the floor systems are frequently treated as perfectly rigid diaphragms). In recent …
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Three-Dimensional Modeling and Finite Element Analysis of the Human Diaphragm
The diaphragm is a crucial muscle in respiration, creating the pressure gradients necessary for inhalation. This thesis focuses on a computational methodology to reconstruct the diaphragm’s geometry using CT imaging and simulate its biomechanical behavior under physiological loading via Finite …
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