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Now showing items 11-20 of 112
Assessment of high-value near-term engineering innovations for Indian sanitation
(Massachusetts Institute of Technology, 2020)
This study presents the Sanitation Needs and Innovation (SaNI) framework for identifying underserved populations and gaps between their sustainable sanitation requirements and sanitation system performance. Safe, sustainable ...
Single-component Li₂O solid electrolyte interphase on lithium : probing transport properties in battery environments
(Massachusetts Institute of Technology, 2020)
Lithium (Li) anodes suffer numerous challenges arising from the chemically inhomogeneous nature of the native solid electrolyte interphase (SEI), which impedes smooth Li plating and leads to dendrite growth. In spite of ...
Numerical simulation of heavy oil droplets mixing in supercritical water at conditions relevant to supercritical water heavy oil upgrading
(Massachusetts Institute of Technology, 2020)
Supercritical water (SCW) crude oil upgrading is a promising technology for upgrading and desulfurization of heavy crude oil and residues. The outcome of this process is determined by an interplay of hydrocarbon cracking ...
Design, construction, and analysis of a modular ship model and open-source autonomous surface vehicle
(Massachusetts Institute of Technology, 2020)
Existing models used to explore hydrostatic, hydrodynamic, seakeeping, and maneuvering characteristics of ships are limited in that their characteristics are essentially static. The effects of various hull appendages, ...
The design, feasibility and cost analysis of sea barrier systems in Norfolk, Virginia and the comparative cost of shoreline barriers
(Massachusetts Institute of Technology, 2020)
Protecting a coastline from the damage of a storm surge, or tidal flooding associated with sea level rise, is a challenging and costly engineering endeavor. Low lying properties located directly on an ocean coastline are ...
Data driven manufacturing risk assessment for turbine engine programs
(Massachusetts Institute of Technology, 2020)
Waste and uncertainty can be managed at all levels of a production process from a program level down to a single step in a manufacturing cell, and is done by assessing risk. Risk is defined as uncertainty in the ability ...
Shipboard fault detection, load transient exploration, and power simulation
(Massachusetts Institute of Technology, 2020)
Non-intrusive load monitoring experiments have provided useful information in practice for activity tracking, condition-based maintenance, energy scorekeeping, and fault detection through various installations over several ...
A suction-based reversible attachment and locomotion mechanism for an underway vessel hull cleaning and inspection robot
(Massachusetts Institute of Technology, 2020)
The international merchant vessel fleet is in charge of carrying over 90% of the items that are traded globally. Any vessel down time brings significant additional costs to the industry. A common source of vessel downtime ...
System identification and control of a miniature external mechanical vibration device towards clinical ultrasound shear wave elastography
(Massachusetts Institute of Technology, 2020)
An acoustic radiation force (ARF) is commonly used to generate shear waves in ultrasound systems for shear wave elastography (SWE). However, ARF requires complex hardware that produces thermal stresses in tissues and ...
Numerical tools for rate-cost-quality analysis of laser-based additive manufacturing
(Massachusetts Institute of Technology, 2020)
AM expands the design space in an unprecedented manner, as it can allow complex internal geometries, support multiple materials or structural gradients, significantly reduce lead times for small-batch production, and enable ...