scholarly journals Benefits and applications of laser-induced sparks in real scale model measurements

2015 ◽  
Vol 138 (3) ◽  
pp. EL175-EL180 ◽  
Author(s):  
Javier Gómez-Bolaños ◽  
Symeon Delikaris-Manias ◽  
Ville Pulkki ◽  
Joona Eskelinen ◽  
Edward Hæggström ◽  
...  
Keyword(s):  
Scale Model ◽  
Real Scale

scholarly journals Active Separation Control at the Pylon-Wing Junction of a Real-Scale Model

AIAA Journal ◽  
2019 ◽  
Vol 57 (1) ◽  
pp. 132-141 ◽  
Author(s):  
Philipp Schloesser ◽  
Vitaly Soudakov ◽  
Matthias Bauer ◽  
Jochen Wild
Keyword(s):  
Scale Model ◽  
Separation Control ◽  
Real Scale

scholarly journals Microfluidic Systems: A 3D Biohybrid Real‐Scale Model of the Brain Cancer Microenvironment for Advanced In Vitro Testing (Adv. Mater. Technol. 10/2020)

2020 ◽  
Vol 5 (10) ◽  
pp. 2070063
Author(s):  
Omar Tricinci ◽  
Daniele De Pasquale ◽  
Attilio Marino ◽  
Matteo Battaglini ◽  
Carlotta Pucci ◽  
...  
Keyword(s):  
Brain Cancer ◽  
Scale Model ◽  
In Vitro Testing ◽  
Cancer Microenvironment ◽  
Microfluidic Systems ◽  
The Brain ◽  
Real Scale

Flame Stretching in a Room Model With Natural Vent

2009 ◽  
Author(s):  
W. K. Chow ◽  
S. S. Han ◽  
Y. Gao ◽  
H. Dong ◽  
Y. Huo ◽  
...  
Keyword(s):  
Short Note ◽  
Flame Length ◽  
Pool Fire ◽  
Scale Model ◽  
Ceiling Vent ◽  
Set Up ◽  
Room Model ◽  
Real Scale ◽  
Pool Sizes

Flame stretching in a room with a ceiling vent will be discussed in this short note. A real-scale model was constructed with a gasoline pool fire placed inside. Another pool fire of the same size and amount of fuel was burnt outside the model. Different pool sizes of diameters 0.07 m, 0.08 m, 0.11 m, 0.16 m and 0.2 m were set up. Volume of gasoline varied from 30 ml to 500 ml to give different burning durations. The flame lengths of the two fires were measured and compared. It is observed that the flame length of the pool fire inside the room was over 20% higher than that outside at the later stage of the fire.

scholarly journals Fire Spread of Thermal Insulation Materials in the Ceiling of Piloti-Type Structure: Comparison of Numerical Simulation and Experimental Fire Tests Using Small- and Real-Scale Models

2019 ◽  
Vol 11 (12) ◽  
pp. 3389
Author(s):  
Heong-Won Suh ◽  
Su-Min Im ◽  
Tae-Hoon Park ◽  
Hyung-Jun Kim ◽  
Hong-Sik Kim ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Fire Test ◽  
Fire Spread ◽  
Scale Model ◽  
Fire Intensity ◽  
Small Scale ◽  
Insulation Material ◽  
Fire Tests ◽  
Insulation Materials ◽  
Real Scale

Large-scale fires mainly due to the ignition of thermal insulation materials in the ceiling of piloti-type structures are becoming frequent. However, the fire spread in these cases is not well understood. Herein we performed small-scale and real-scale model tests, and numerical simulations using a fire dynamics simulator (FDS). The experimental and FDS results were compared to elucidate fire spread and effects of thermal insulation materials on it. Comparison of real-scale fire test and FDS results revealed that extruded polystyrene (XPS) thermal insulation material generated additional ignition sources above the ceiling materials upon melting and propagated and sustained the fire. Deformation of these materials during fire test generated gaps, and combustible gases leaked out to cause fire spread. When the ceiling materials collapsed, air flew in through the gaps, leading to flashover that rapidly increased fire intensity and degree of spread. Although the variations of temperatures in real-scale fire test and FDS analysis were approximately similar, melting of XPS and generation of ignition sources could not be reproduced using FDS. Thus, artificial settings that increase the size and intensity of ignition sources at the appropriate moment in FDS were needed to achieve results comparable to those recorded by heat detectors in real-scale fire tests.

scholarly journals A 3D Biohybrid Real‐Scale Model of the Brain Cancer Microenvironment for Advanced In Vitro Testing

2020 ◽  
Vol 5 (10) ◽  
pp. 2000540 ◽  
Author(s):  
Omar Tricinci ◽  
Daniele De Pasquale ◽  
Attilio Marino ◽  
Matteo Battaglini ◽  
Carlotta Pucci ◽  
...  
Keyword(s):  
Brain Cancer ◽  
Scale Model ◽  
In Vitro Testing ◽  
Cancer Microenvironment ◽  
The Brain ◽  
Real Scale

Structural Health Monitoring on Real Scale Model of a Masonry Triumphal Arch

2007 ◽  
pp. 279-284
Author(s):  
Giovanni Damonte ◽  
Stefano Podestà ◽  
Giuseppe Riotto ◽  
Sergio Lagomarsino ◽  
Georges Magonette ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Scale Model ◽  
Structural Health ◽  
Real Scale

Structural Health Monitoring on Real Scale Model of a Masonry Triumphal Arch

2007 ◽  
Vol 347 ◽  
pp. 279-284
Author(s):  
Giovanni Damonte ◽  
Stefano Podestà ◽  
Giuseppe Riotto ◽  
Sergio Lagomarsino ◽  
Georges Magonette ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Dynamic Behaviour ◽  
Structural Safety ◽  
Scale Model ◽  
Research Centre ◽  
Structural Dynamic ◽  
Measurement Variability ◽  
Structural Health ◽  
Real Scale

Monitoring represents one solution for the safeguard of historical buildings. The need for a non-destructive and comprehensive monitoring methodology suggests using related to Structural Health Monitoring. This paper is intended to present the outcomes of an experimental campaign on a masonry triumphal arch representing a real scale model of a church part, which was built outside ELSA laboratory at the Joint Research Centre of European Commission. This study aims to evaluate the damage pattern of the structure through simplified dynamic methods producing a quick evaluation of structural safety, easy to use on real cases. As in traditional monitoring, both the instrumentation precision and the measurement variability due to the different testing condition (e.g. ambient conditions) have to be considered. The related effects on the structural dynamic behaviour were analysed and evaluated in order to distinguish an effective change in the “structural health” (a real damage) from an alteration caused by external conditions (a “false positive”). Once studied such effects, settlements were induced to one column base through an “ad hoc” device. Varying the settlement width, three damage levels were obtained in the structure. For each state the structural dynamic properties and their variation were evaluated. Sensitivity of dynamic behaviour to structural damage and to its changes was analysed comparing the results for each level.

scholarly journals Finite Element Analysis of Hollow-Core Slabs

2016 ◽  
Vol 6 (1) ◽  
pp. 29-33 ◽  
Author(s):  
E. Frăţilă ◽  
Z. Kiss
Keyword(s):  
Finite Element ◽  
Fundamental Frequency ◽  
Scale Model ◽  
Experimental Program ◽  
Hollow Core ◽  
Element Analysis ◽  
Finite Element Software ◽  
Hollow Core Slab ◽  
Vibration Performance ◽  
Real Scale

Abstract The use of high resistance materials in nowadays structures has led to an increase in the span of the floors. Despite meeting the resistance and deformation criteria, floors might vibrate excessively due to increased slenderness. Based on a real-scale model experimental program, a parametric study has been developed in order to asses the vibration performance of prestressed hollow-core slab system on spans larger than the ones on which tests have been conducted, and the interaction between the concrete that have been poured in different stages. The measurements have been performed using Brüel and Kjӕr equipment, whereas the study has been carried out using Abaqus 6.11. finite element software. The simulations have been made by increasing the span of the slab, in order to observe the variation of the fundamental frequency. Also, the simulations have been conducted with different types of concrete topping thickness. The minimum acceptable value of the fundamental frequency has been considered 8Hz, according to existing literature.

scholarly journals WAVE IMPACTS AT SMALL AND REAL SCALE FOR THE STEPPED SLOPED SEAWALL DESIGN AT DEN OEVER

2018 ◽  
pp. 51
Author(s):  
Gosse Jan Steendam ◽  
Jentsje Van der Meer ◽  
Paul Van Steeg ◽  
Ruud Joosten
Keyword(s):  
Scale Effects ◽  
Model Tests ◽  
Full Scale ◽  
Scale Model ◽  
Wave Loading ◽  
Sensor Signals ◽  
Real Scale

The dike in Den Oever has to be improved. To keep the dike as low as possible and to make it suitable for other uses, the choice was made to install a stepped revetment on the sea side. In order to determine the design wave loading, scale model tests and tests at full scale were performed. The comparison shows that loads, as a result of model and scale effects and by averaging the sensor signals, could be decreased by a factor 4 relative to the scale model tests.

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