Characterization Of Fire Protection Materials Of Steel Elements. Sensitivity Study Of A Simplified Assessment Method.

2000 ◽  
Vol 6 ◽  
pp. 915-926
Author(s):  
J. Kruppa
Keyword(s):  
Fire Protection ◽  
Sensitivity Study ◽  
Assessment Method

Full scale test of a PC bridge to calibrate assessment methods

2021 ◽  
Author(s):  
Niklas Bagge ◽  
Jonny Nilimaa ◽  
Silvia Sarmiento ◽  
Arto Puurula ◽  
Jaime Gonzalez-Libreros ◽  
...  
Keyword(s):  
Prestressed Concrete ◽  
Structural Response ◽  
Sensitivity Study ◽  
Assessment Method ◽  
Full Scale ◽  
Concrete Bridges ◽  
Fractional Factorial ◽  
Fe Model ◽  
Load Carrying ◽  
Existing Bridges

<p>In this paper, experiences on the development of an assessment method for existing bridges are presented. The method is calibrated using the results of full-scale testing to failure of a prestressed bridge in Sweden. To evaluate the key parameters for the structural response, measured by deflections, strains in tendons and stirrups and crack openings, a sensitivity study based on the concept of fractional factorial design is incorporated to the assessment. Results showed that the most significant parameters are related to the tensile properties of the concrete (tensile strength and fracture energy) and the boundary conditions. A finite element (FE) model in which the results of the sensitivity analysis were applied, was able to predict accurately the load-carrying capacity of the bridge and its failure mode. Two additional existing prestressed concrete bridges, that will be used to improve further the method, are also described, and discussed.</p>

scholarly journals Research on Assessment Method of Fire Protection System

2011 ◽  
Vol 11 ◽  
pp. 147-155 ◽  
Author(s):  
HUANG Yan-bo ◽  
HAN Bing ◽  
ZHAO Zhe
Keyword(s):  
Fire Protection ◽  
Assessment Method ◽  
Protection System ◽  
Fire Protection System

Effect of conditioning history on the characterization of hardness of thermo-mechanical densified and heat treated poplar wood

Holzforschung ◽  
2017 ◽  
Vol 71 (6) ◽  
pp. 515-520 ◽  
Author(s):  
Tao Li ◽  
Jia-bin Cai ◽  
Stavros Avramidis ◽  
Da-li Cheng ◽  
Magnus E.P. Wålinder ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Relative Humidity ◽  
Assessment Method ◽  
Poplar Wood ◽  
Climate Chamber ◽  
Heat Treated ◽  
Specific Assessment ◽  
One Step ◽  
Modified Wood

Abstract Poplar wood was modified by a combination of thermo-mechanical densification (TMD) and heat treatment (HT) process at five temperatures ranging from 170 to 210°C. A new two-step conditioning method (CM) is suggested, in the course of which the modified wood is submitted to 50°C/99% RH→25°C/65% RH, where RH means relative humidity in the climate chamber. The traditional one-step CM (25°C/65% RH) served as reference. The effects of conditioning history on hardness were observed and analyzed along with the change of dimensional stability. The hardness of the modified wood was lower in the case of the proposed CM due to more set-recovery release, but the extent of that decreased with the HT temperature. For a good hardness, HT200°C should be selected with the proposed CM, which is different from the optimization output of 180°C obtained from the traditional CM. In conclusion, a specific assessment method for the performance characterization of this type of modified wood would be beneficial for the combined TMD and HT processes.

Application of a geographical assessment method for the characterization of wildland–urban interfaces in the context of wildfire prevention: A case study in western Madrid

2012 ◽  
Vol 35 (1-2) ◽  
pp. 60-70 ◽  
Author(s):  
Gema Herrero-Corral ◽  
Marielle Jappiot ◽  
Christophe Bouillon ◽  
Marlène Long-Fournel
Keyword(s):  
Assessment Method

Advances in the characterization of the polarity of DOM under ambient water quality conditions using the polarity rapid assessment method

2008 ◽  
Vol 8 (6) ◽  
pp. 725-733 ◽  
Author(s):  
Marc Philibert ◽  
Steve Bush ◽  
Fernando L. Rosario-Ortiz ◽  
I. H. (Mel) Suffet
Keyword(s):  
Natural Waters ◽  
Rapid Assessment ◽  
Assessment Method ◽  
Ambient Conditions ◽  
Treatment Efficiency ◽  
Environmental Processes ◽  
Rapid Assessment Method ◽  
Treatment Processes ◽  
Temporal And Spatial

Dissolved organic matter (DOM) is a mixture of compounds that are found ubiquitously in natural waters. The characterization of DOM is important in order to understand its effect on environmental processes and during treatment systems. Of all the properties usually measured with relation to DOM, the polarity is of critical importance since it will directly influence different processes. Recently, a new method has been developed for the characterization of DOM under ambient conditions, called the Polar Rapid Assessment Method (PRAM). The PRAM allows characterization and temporal and spatial comparisons under environmentally relevant conditions of pH and ionic strength. This study first modifies the PRAM method to 3 probes for high sample throughput by using a subset of the SPE sorbents to interpret DOM polarity by DOC and UV detection. Then the modified PRAM is compared to the XAD resin polarity method and finds a similarity in hydrophobic assessment but different results for the hydrophilic DOM. This study then evaluates the use of PRAM as a tool to evaluate water treatment processes and the character of size fractions of DOM. The PRAM is shown to be a very useful tool to evaluate and thus optimize treatment efficiency and removal of DOM.

scholarly journals Thermal Characterization of Phantoms Used for Quality Assurance of Deep Hyperthermia Systems

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4549
Author(s):  
Laura Farina ◽  
Kemal Sumser ◽  
Gerard van Rhoon ◽  
Sergio Curto
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Thermal Characterization ◽  
Sensitivity Study ◽  
Volumetric Heat Capacity ◽  
Internal Organs ◽  
Protocol Optimization ◽  
Thermal Measurements ◽  
Deep Hyperthermia

Tissue mimicking phantoms are frequently used in hyperthermia applications for device and protocol optimization. Unfortunately, a commonly experienced limitation is that their precise thermal properties are not available. Therefore, in this study, the thermal properties of three currently used QA phantoms for deep hyperthermia are measured with an “off-shelf” commercial thermal property analyzer. We have measured averaged values of thermal conductivity (k = 0.59 ± 0.07 Wm−1K−1), volumetric heat capacity (C = 3.85 ± 0.45 MJm−3K−1) and thermal diffusivity (D = 0.16 ± 0.02 mm2s−1). These values are comparable with reported values of internal organs, such as liver, kidney and muscle. In addition, a sensitivity study of the performance of the commercial sensor is conducted. To ensure correct thermal measurements, the sample under test should entirely cover the length of the sensor, and a minimum of 4 mm of material parallel to the sensor in all directions should be guaranteed.

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