Fire Behavior of Sandwich Panels for Roofing Applications

2016 ◽  
Vol 711 ◽  
pp. 775-782 ◽  
Author(s):  
Giulio Zani ◽  
Marco Carlo Rampini ◽  
Matteo Colombo ◽  
Marco di Prisco
Keyword(s):  
Mechanical Behavior ◽  
Fire Resistance ◽  
Fire Behavior ◽  
Cost Effective ◽  
Effective Solution ◽  
Full Scale Test ◽  
Experimental Campaign ◽  
Scale Test ◽  
Regional Authorities ◽  
Temperature Time

Cement-based multilayered panels represent a promising and cost-effective solution for the roofing of modern prefabricated buildings. Due to the spread of such technologies, it is deemed necessary to evaluate the structural performances also with reference to the fire scenario. In the framework of a research project financed by national and regional authorities, Politecnico di Milano coordinated a wide experimental campaign aimed at assessing the mechanical behavior of innovative composite elements (2.5 m wide, 5 m long). The paper presents the results pertaining to the full-scale test of a prototype at high temperatures - mainly focusing on Temperature-Time and Displacement-Time diagrams - and provides a fire resistance classification compatible with the observed failure mode.

scholarly journals Numerical 3D Simulation of a Longitudinal Ventilation System: Memorial Tunnel Case

2006 ◽  
Author(s):  
Monica Galdo-Vega ◽  
Rafael Ballesteros-Tajadura ◽  
Carlos Santolaria-Morros
Keyword(s):  
Numerical Models ◽  
Ventilation System ◽  
Fire Behavior ◽  
Full Scale ◽  
3D Simulation ◽  
Full Scale Test ◽  
Road Tunnel ◽  
Tunnel Fire ◽  
Longitudinal Ventilation ◽  
Scale Test

In this work, a numerical 3D simulation of a longitudinal ventilation system is developed to analyze the fire behavior inside a road tunnel. Recent disasters, like crashes in the Mont Blanc tunnel (France, 1999) or San Gottardo (Italy, 2001), have shown the need for better integral actions during possible fire incidents. The minimum delay time, required for starting the jet fans, or the evolution of the smoke patterns inside the tunnel are critical issues when rescue plans are designed. Some methods to study the smoke propagation during a fire are: pseudo-thermal scale models, full scale test and numerical models. Several contributions using the first method can be found in references [1], [2] and [3]. However it is very difficult to extrapolate the results from this kind of models. The second method (full scale test) is the most expensive of all and only two of them have been conducted recently: EUREKA Project [4] and the Memorial Tunnel Fire Ventilation Test Program [5]. The last method (numerical models) it is now under development. The objective of this work is to validate a numerical model, to predict the behavior of the smoke generated during a fire incident inside a road tunnel, comparing its results with previous experimental data collected in the Memorial Tunnel Project. In addition, a good agreement was achieved, so a methodology to predict the performance of a longitudinal ventilation system in case of fire was accurately established.

scholarly journals Development Of A Biaxial Testing Apparatus

2021 ◽  
Author(s):  
Amir Noorafkan
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Load Cell ◽  
Full Scale Test ◽  
Biaxial Testing ◽  
Testing Apparatus ◽  
Uniaxial Testing ◽  
Stepper Motors ◽  
Scale Test ◽  
Crucial Part

<div>Material testing is a crucial part of engineering design and development, especially in aerospace engineering as it is more cost effective to test an element or component than doing a full-scale test on the completed part. Typically, uniaxial testing is carried out to characterize a material,</div><div>which is adequate for finding the properties of the material. However, these kinds of tests are inadequate for simulating the real-world loading that a component may experience in its life cycle. Therefore, this project’s goal was to develop a low-cost biaxial testing apparatus using off-the-shelf components, including the Arduino Uno microcontroller (“Arduino”), stepper motors (“motors”), and load cell. This report outlines the development of the software required to</div><div>operate the motors and read output value of the load cell. The Arduino code used to control the motors was developed using open-source code available on GitHub and the Stepper library, which contains the required functions for controlling the motors. The Arduino code can be used</div><div>to determine the strain rate of up to 11 𝑚𝑚/𝑚𝑖𝑛, as well as the type of loading (tension or compression) along each axis. </div>

scholarly journals Mechanical Behavior and Reinforcing Effect of Full-Scale Test Embankment Applied the Reinforced Soil Method by Vertical Micro-piles

2018 ◽  
Vol 13 (4) ◽  
pp. 249-267
Author(s):  
Akiyoshi KAMURA ◽  
Motoki KAZAMA ◽  
Tadashi KAWAI ◽  
Jongkwan KIM ◽  
Tetsunori KUMADA ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Reinforced Soil ◽  
Full Scale ◽  
Full Scale Test ◽  
Reinforcing Effect ◽  
Scale Test ◽  
Test Embankment

Fire Resistance Of Exterior Walls: Model And Full-scale Test

2005 ◽  
Vol 8 ◽  
pp. 291-302
Author(s):  
Hisa Takeda
Keyword(s):  
Fire Resistance ◽  
Full Scale ◽  
Full Scale Test ◽  
Scale Test

scholarly journals Development Of A Biaxial Testing Apparatus

2021 ◽  
Author(s):  
Amir Noorafkan
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Load Cell ◽  
Full Scale Test ◽  
Biaxial Testing ◽  
Testing Apparatus ◽  
Uniaxial Testing ◽  
Stepper Motors ◽  
Scale Test ◽  
Crucial Part

<div>Material testing is a crucial part of engineering design and development, especially in aerospace engineering as it is more cost effective to test an element or component than doing a full-scale test on the completed part. Typically, uniaxial testing is carried out to characterize a material,</div><div>which is adequate for finding the properties of the material. However, these kinds of tests are inadequate for simulating the real-world loading that a component may experience in its life cycle. Therefore, this project’s goal was to develop a low-cost biaxial testing apparatus using off-the-shelf components, including the Arduino Uno microcontroller (“Arduino”), stepper motors (“motors”), and load cell. This report outlines the development of the software required to</div><div>operate the motors and read output value of the load cell. The Arduino code used to control the motors was developed using open-source code available on GitHub and the Stepper library, which contains the required functions for controlling the motors. The Arduino code can be used</div><div>to determine the strain rate of up to 11 𝑚𝑚/𝑚𝑖𝑛, as well as the type of loading (tension or compression) along each axis. </div>

Full-Scale Test on Coupled Thermo-Hydro-Mechanical Processes in Engineered Barrier System

1994 ◽  
Vol 1 (1) ◽  
pp. 77-83
Author(s):  
Yoshiji Moro ◽  
Tomoo Fujita ◽  
Takeshi Kanno ◽  
Akira Kobayashi
Keyword(s):  
Full Scale ◽  
Full Scale Test ◽  
Scale Test ◽  
Engineered Barrier

The assessment of particulate matter (PM2.5) removal efficiency on air cleaner products through full scale test in Korea

2019 ◽  
Vol 18 (1) ◽  
pp. 76-80 ◽  
Author(s):  
Kichul Kim ◽  
Pil-Ju Park ◽  
Soomi Eo ◽  
Seungmi Kwon ◽  
Kwangrae Kim ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Removal Efficiency ◽  
Full Scale ◽  
Full Scale Test ◽  
Air Cleaner ◽  
Scale Test

Predicting Roof Diaphragm and Endwall Stiffness From Full-Scale Test Results of a Metal-Clad, Post-Frame Building

1992 ◽  
Vol 35 (3) ◽  
pp. 977-985 ◽  
Author(s):  
K. G. Gebremedhin ◽  
J. A. Bartsch ◽  
M. C. Jorgensen
Keyword(s):  
Full Scale ◽  
Test Results ◽  
Full Scale Test ◽  
Frame Building ◽  
Scale Test

scholarly journals Development of Quantum Dot (QD) Based Color Converters for Multicolor Display

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1089
Author(s):  
Muhammad T. Sajjad ◽  
Ashu K. Bansal ◽  
Francesco Antolini ◽  
Eduard Preis ◽  
Lenuta Stroea ◽  
...  
Keyword(s):  
Polymer Matrix ◽  
Cost Effective ◽  
Final Size ◽  
Force Microscopy ◽  
Morphological Studies ◽  
Color Displays ◽  
Transmission Electron ◽  
Different Temperatures ◽  
Color Conversion ◽  
Temperature Time

Many displays involve the use of color conversion layers. QDs are attractive candidates as color converters because of their easy processability, tuneable optical properties, high photoluminescence quantum yield, and good stability. Here, we show that emissive QDs with narrow emission range can be made in-situ in a polymer matrix, with properties useful for color conversion. This was achieved by blending the blue-emitting pyridine based polymer with a cadmium selenide precursor and baking their films at different temperatures. To achieve efficient color conversion, blend ratio and baking temperature/time were varied. We found that thermal decomposition of the precursor leads to highly emissive QDs whose final size and emission can be controlled using baking temperature/time. The formation of the QDs inside the polymer matrix was confirmed through morphological studies using atomic force microscopy (AFM) and transmission electron microscopy (TEM). Hence, our approach provides a cost-effective route to making highly emissive color converters for multi-color displays.

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