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Effect of cyclic high loading rates on the fatigue strength of aluminum-based composites
(2009)
The study of fatigue under high loading rates is of great interest in the complete characterization of a new series of composites with Al-Cu-Mg matrix reinforced with AlB2 dispersoids. Homogeneous and functionally graded ...
A methodology to incorporate highway safety into transportation planning using generalized linear mixed models
(2014)
Highway Safety has been identified as a significant problem worldwide. Crashes have been found as the second cause of death in the world according to the World Health Organization (2010). In fact, road crashes cost billions ...
Determinación de periodos fundamentales del suelo mediante vibraciones ambientales en el Municipio de Humacao, Puerto Rico
(2014-05)
The Nakamura’s technique has been used worldwide to determine site fundamental periods. The technique is to calculate and plot H/V spectral ratios from ambient vibrations recorded over the ground. Ambient vibration ...
Synthesis and characterization of metal-doped titanium dioxide and treatability studies for photo-degrading atrazine and methylene blue under spectrum of UV and visible light
(2021-05-14)
TiO2 nanoparticles were synthesized and doped with metals ions such as iron (Fe +3) and tungsten (W+4) to achieve photocatalytic properties under the visible light spectrum then TiO2 nanocomposite where immobilized within ...
Computation of gradually varied flow in channel networks with hydraulic structures
(2018)
Irrigation canals transport water from a source, such as a natural river or a reservoir, to a crop field or a community, making them vital for agriculture. This research develops a computer model to determine the water ...
Impulse load response of lattice steel columns
(2012)
Many bridges that represent an important part of our nation’s infrastructure system are constructed from steel components including steel plates, beams, columns, and cables of different configurations. Because of their ...
CFD numerical simulations to elucidate the wind speedup generated by the geomorphic complexity of Puerto Rico
(2020-12-11)
FEMA commissioned a joint effort study after Hurricane Maria (2017) for Puerto Rico to
develop Special Wind Region Maps, as specified in ASCE 7-16 wind guidelines. The venture was led by the Strategic Alliance for Risk ...
Development of UPRM hybrid simulation facilities for dynamic analysis
(2019-05-15)
Puerto Rico is located in a high seismicity zone, hence it is essential the development and implementation of state-of-the-art dynamic analysis in order to predict and prevent possible damages on structures. At present, ...
Medición de la infiltración y la succión en una arena no saturada usando un lisímetro de campo y su aplicación a la estabilidad de taludes
(2008-12)
Esta investigación involucró el diseño y construcción de un lisímetro de campo para monitorear el proceso de infiltración en una arena. El lisímetro, con un diámetro de 1.25 m y una altura de 1.75m, fue instalado en las ...
User performance analysis of a two-way left turn lane using a driving simulator
(2018-12)
This research’s aim is to study the behavior of drivers when the cross-section of the roadway is modified to include a Two-Way Left Turn Lane (TWLTL). This research study used the UPRM driving simulator to collect driver ...