Results 81 to 90 of about 6,971 (185)

Design methodologies for controlling vibrations in buildings [PDF]

open access: yes, 1999
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.Includes bibliographical references (leaves 44-45).Although vibration absorbers have been employed in mechanical equipment mounting for over 100 ...
Laub, Errol (Errol Jonathan), 1976-
core  

A Corrosion Control Manual for Rail Rapid Transit [PDF]

open access: yes
This manual addresses corrosion problems in the design, contruction, and maintenance of rapid transit systems. Design and maintenance solutions are provided for each problem covered.
Fitzgerald, J. H., III   +3 more
core   +1 more source

SYNTHESIS AND CHARACTERIZATION OF POLYIMIDEZEOLITE MIXED MATRIX MEMBRANE FOR BIOGAS PURIFICATION [PDF]

open access: yes, 2009
Biogas has become an attractive alternative energy source due to the limitation of energy from fossil. In this study, a new type of mixed matrix membrane (MMM) consisting of polyimide-zeolite was synthesized and characterized for biogas purification ...
Budiyono, Budiyono   +4 more
core  

Optimization in 3D Printable Silicone DIW Ink Formulations: Gelling Behavior Control and the Use of Carbon Nanotubes

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 15, April 15, 2026.
DIW 3D printing of silicone materials can be optimized by controlling their gelling behavior or curing mechanism with carbon nanotubes. This precision control results in high‐performance elastomer materials and is a model study for characterization methods.
G. M. Fazley Elahee   +5 more
wiley   +1 more source

Astronaut tool development: An orbital replaceable unit-portable handhold [PDF]

open access: yes
A tool to be used during astronaut Extra-Vehicular Activity (EVA) replacement of spent or defective electrical/electronic component boxes is described. The generation of requirements and design philosophies are detailed, as well as specifics relating to ...
Redmon, John W., Jr.
core   +1 more source

Buildings in Barcelona protected from railway-induced vibrations with base isolation [PDF]

open access: yes, 2014
This work describes two mid-height RC base isolated buildings recently erected in Barcelona. Both buildings are located near the main railway station in Barcelona (Barcelona-Sants), thus undergoing dynamic excitations due to intensive railway traffic ...
Araníbar, Hugo   +6 more
core  

Finite Element Modeling of a Thermoplastic Polyurethane Ball for Rolling Seismic Isolation

open access: yesEarthquake Engineering &Structural Dynamics, Volume 55, Issue 4, Page 926-946, 10 April 2026.
ABSTRACT The Elastomeric‐Ball Pendulum (EBP) system, which consists of an elastomeric ball rolling on a spherical concrete surface, has been proposed as an isolation system for lightweight structures. Experimental tests have shown that the mechanics of such a rolling ball are remarkably complicated because the vertical load changes the shape of the ...
Sergio I. Reyes   +2 more
wiley   +1 more source

Development of procedures for calculating stiffness and damping of elastomers in engineering applications. Part 5: Elastomer performance limits and the design and test of an elastomer damper [PDF]

open access: yes
Tests were performed on elastomer specimens of the material polybutadiene to determine the performance limitations imposed by strain, temperature, and frequency.
Darlow, M. S.   +2 more
core   +1 more source

Design and fabrication of force sensing robotic foot utilizing the volumetric displacement of a hyperelastic polymer [PDF]

open access: yes, 2012
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.Cataloged from PDF version of thesis.Includes bibliographical references (p.
Estrada, Matthew A
core  

Toward Greener Hybrid Composites: Effect of Wood Powder and Calcium Carbonate on Recycled HDPE With Tyre and MAPE Modifiers

open access: yesSPE Polymers, Volume 7, Issue 2, April 2026.
Recycled high‐density polyethylene (rHDPE) was reinforced with wood powder (0–25 wt%) and calcium carbonate (5 wt%), modified with ground tyre powder (5 wt%) and maleic anhydride grafted polypropylene (MAPP, 5 wt%). The hybrid filler system demonstrated: Mechanical Enhancement: Tensile strength increased by 25.5%, stiffness by 45%, and tensile modulus ...
Wilson Webo   +3 more
wiley   +1 more source

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