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Online since: January 2022
Authors: Romildo Dias Toledo Filho, Patrícia Brandão Souza, Giulia Fea Oliveira, Lucas Rosse Caldas, Rayane de Lima Moura Paiva
Our research links experimental data with thermal-energy simulations and LCA, delivering a holistic analysis of a novel and non-conventional material.
Life cycle inventory (LCI) For the Life Cycle Inventory (LCI) stage, primary data is collected from the laboratory, while for secondary data, the Ecoinvent v. 3.6 and scientific literature are used.
Based on these data and assumptions, we found a value of 1.62 kgCO2/kg of bamboo, which resulted in 1.21 kgCO2/m², 2.42 kgCO2/m², and 3.64 kgCO2/m² for EMB3, EMB6, and EMB9, respectively.
We consider that the CaO in cement is 0.55 and 0.70 in hydrated lime, based on manufacturers’ data.
Based on these data and assumptions, we found that, for earth mortars (EMB0, EMB3, EMB6, and EMB9), it is possible to capture 2.67 kgCO2/m² (they present the same value since all of them have the same amount of cement and hydrated lime), and for conventional mortars CMS1:3:12, we found the value of 5.31 kgCO2/m² and 6.02 kgCO2/m² for CMS1:2:8.
Life cycle inventory (LCI) For the Life Cycle Inventory (LCI) stage, primary data is collected from the laboratory, while for secondary data, the Ecoinvent v. 3.6 and scientific literature are used.
Based on these data and assumptions, we found a value of 1.62 kgCO2/kg of bamboo, which resulted in 1.21 kgCO2/m², 2.42 kgCO2/m², and 3.64 kgCO2/m² for EMB3, EMB6, and EMB9, respectively.
We consider that the CaO in cement is 0.55 and 0.70 in hydrated lime, based on manufacturers’ data.
Based on these data and assumptions, we found that, for earth mortars (EMB0, EMB3, EMB6, and EMB9), it is possible to capture 2.67 kgCO2/m² (they present the same value since all of them have the same amount of cement and hydrated lime), and for conventional mortars CMS1:3:12, we found the value of 5.31 kgCO2/m² and 6.02 kgCO2/m² for CMS1:2:8.
Online since: March 2015
Authors: Yong Feng Luo, Xu Hong Qiang, Xiao Liu, Xi Yu Wang
This is due to the lack of research data available and hence a deeper parametric study is of urgent need.
Može et al. [9] conducted FE analysis on specimens of S690 steel and compared the result with data of 38 specimens in other literature, most of which were analyzed by FEM.
To systematically look into this area, one still has to refer to the large quantity of research data on mild steel connections.
These results also highlighted the importance of using robust FE models to explain these observations and to provide data on which to base simplified design models.
Data offered by experimental and finite element analysis could be processed to build a numerical model. 2.
Može et al. [9] conducted FE analysis on specimens of S690 steel and compared the result with data of 38 specimens in other literature, most of which were analyzed by FEM.
To systematically look into this area, one still has to refer to the large quantity of research data on mild steel connections.
These results also highlighted the importance of using robust FE models to explain these observations and to provide data on which to base simplified design models.
Data offered by experimental and finite element analysis could be processed to build a numerical model. 2.
Online since: October 2011
Authors: Dlear Rafiq Saber, Omed Ghareb Abdullah
The reductions of optical energy band gap were observed for all samples after annealing at temperatures 70oC for three hours.
The analysis of the optical absorption spectra near the band edge lead to interesting data related to the presence of different processes occurring in polymers.
The reduction of the band gap of these films after thermal treatment, and shifting the absorption properties of these organic molecules to lower energy often gives rise to stability problems to oxidation [18].
The analysis of the optical absorption spectra near the band edge lead to interesting data related to the presence of different processes occurring in polymers.
The reduction of the band gap of these films after thermal treatment, and shifting the absorption properties of these organic molecules to lower energy often gives rise to stability problems to oxidation [18].
Online since: November 2013
Authors: Maxime Sauzay, Yi Ting Cui
The modeling of necking using a modified Norton power-law allows lifetime predictions in agreement with experimental data up to a few thousand hours only.
The extrapolation of these curves obtained at high stress leads to overestimated lifetimes which differ by a factor of five at low stress with respect to experimental data.
Other experimental data beyond 50·103h are necessary in order to validate long term creep predictions.
Abe, NIMS Invited Researcher, and the Japan Institute NIMS, for providing the creep rupture data of 18Cr-12Ni-Mo-middle N-low C [8].
Auzoux, ‘Reheat cracking of austenitic stainless steels – influence of work hardening on intergranular damage’, PhD thesis, MINES ParisTech and CEA Sacaly. (2004) [8] NIMS, Creep data sheet, No. 45, Data sheets on the elevated-temperature properties of 18Cr-12Ni-Mo-middle N-low C hot rolled stainless steel plate (SUS 316HP), Japan. (1997) [9] C.R.
The extrapolation of these curves obtained at high stress leads to overestimated lifetimes which differ by a factor of five at low stress with respect to experimental data.
Other experimental data beyond 50·103h are necessary in order to validate long term creep predictions.
Abe, NIMS Invited Researcher, and the Japan Institute NIMS, for providing the creep rupture data of 18Cr-12Ni-Mo-middle N-low C [8].
Auzoux, ‘Reheat cracking of austenitic stainless steels – influence of work hardening on intergranular damage’, PhD thesis, MINES ParisTech and CEA Sacaly. (2004) [8] NIMS, Creep data sheet, No. 45, Data sheets on the elevated-temperature properties of 18Cr-12Ni-Mo-middle N-low C hot rolled stainless steel plate (SUS 316HP), Japan. (1997) [9] C.R.
Online since: December 2010
Authors: Hai Biao Wang, Bao Kuan Li, Jian Gang Yao, Hai Xu Yang
According to the analysis of dynamic response data, the lead-core rubber bearings with proper parameters are used to improve the dynamic performance of the structures, the seismic response of the bridge deck and pier would therefore be greatly reduced, the safety and seismic performance of the structure are globally raised, earthquake- resistance could be increased, and rather good economic benefits have been achieved as well.
It suggests that LRB has better seismic reduction effect in large earthquakes.
References [1] Lichu Fan and Zhiqiang Wang : Vibration Engineering .Vol. 12(1999), p.173(In Chinese) [2]Architecture Institute of Japan, in:Design of Isolated structures, Seismological Press, Beijing (2006) [3]Wang Li, in: Study on Shock Reduction Method of Bridges, Northern Jiao Tong University (Beijing 2002) [4] Kai Qi, in: Analysis of Isolation Effect of Lead-rubber Bearing.
It suggests that LRB has better seismic reduction effect in large earthquakes.
References [1] Lichu Fan and Zhiqiang Wang : Vibration Engineering .Vol. 12(1999), p.173(In Chinese) [2]Architecture Institute of Japan, in:Design of Isolated structures, Seismological Press, Beijing (2006) [3]Wang Li, in: Study on Shock Reduction Method of Bridges, Northern Jiao Tong University (Beijing 2002) [4] Kai Qi, in: Analysis of Isolation Effect of Lead-rubber Bearing.
Online since: October 2006
Authors: Hiroyuki Fujimoto, Hiroshi Hata, Hiroki Kamijo, Ken Nagashima, Kazuya Ikeda, Masataka Iwakuma, Kazuo Funaki, Hisao Yamada, Akira Tomioka, Ken Etsu Uwamori, Yasutaka Sanuki, Shigeru Yoshida
Advances in
production of long-length ultra-fine multifilamentary Nb-Ti conductor and high resistive Cu-Ni
matrix materials have assisted in the reduction of AC losses.
Feasibility of weight reduction and higher efficiencies has been demonstrated on smaller devices with ratings smaller than 100 kVA.
We believe our analysis is correct because its results are almost identical to the measured data for each winding.
We calculated the % impedance at 16.2% using the measured data.
We should reduce the AC loss toward a practical use for weight reduction and higher efficiency.
Feasibility of weight reduction and higher efficiencies has been demonstrated on smaller devices with ratings smaller than 100 kVA.
We believe our analysis is correct because its results are almost identical to the measured data for each winding.
We calculated the % impedance at 16.2% using the measured data.
We should reduce the AC loss toward a practical use for weight reduction and higher efficiency.
Online since: December 2012
Authors: Shu Ren Wang, Zhong Qiu Wang
The separation curves of the layered roof showed the shape variation from the symmetry flat arch to the asymmetric steeple arch and then to the linear form, the maximum separation value of the layered roof exhibited a three-stage tendency of a gradual increase, a steep reduction and a slight change, and the maximum dislocation value of the layered roof presented a two-stage tendency of firstly slow growth and then rapid growth with the increase of the dip angle of coal seam.
T.K.Lu et al. [5] researched the separation development characteristics of the layered roof in the longwall face based on the field observation data.
As shown in Fig. 9, with the increase of θ, the curves of the maximum separation value exhibited a three-stage tendency of a gradual increase (the dip angle θ increasing from 0°, 15° to 30°), a steep reduction (the dip angle θ increasing from 30° to 45°) and a slight change (the dip angle θ increasing from 45° to 60°).
T.K.Lu et al. [5] researched the separation development characteristics of the layered roof in the longwall face based on the field observation data.
As shown in Fig. 9, with the increase of θ, the curves of the maximum separation value exhibited a three-stage tendency of a gradual increase (the dip angle θ increasing from 0°, 15° to 30°), a steep reduction (the dip angle θ increasing from 30° to 45°) and a slight change (the dip angle θ increasing from 45° to 60°).
Online since: November 2011
Authors: Li Jun Chen, Geng Pei, Qing Bo Fang, Jun Jie Pan
The simulations reveal that with the decreasing depth step, increasing tool diameter and wall inclination angle, the axial stress reduces and leads to thinning reduction and more uniform thickness distribution.
(2) load of displacement data The parameter terms “DOF” and “LCID” of keyword *BOUNDARY_PRESCRIBED_MOTION _RIGID are modified to follow the three-dimensional motion trace of the tool.
(3)With the decreasing depth step, increasing tool diameter and wall inclination angle, the axial stress reduces and leads to thinning reduction and more uniform thickness distribution.
(2) load of displacement data The parameter terms “DOF” and “LCID” of keyword *BOUNDARY_PRESCRIBED_MOTION _RIGID are modified to follow the three-dimensional motion trace of the tool.
(3)With the decreasing depth step, increasing tool diameter and wall inclination angle, the axial stress reduces and leads to thinning reduction and more uniform thickness distribution.
Online since: July 2015
Authors: V.A. Kulbachinskii, Leonid N. Oveshnikov, Boris A. Aronzon, Alexander B. Davydov
The main reason of the AHE sign change is the variation of contributions of different AHE mechanisms (intrinsic and side-jump) caused by the reduction of scattering intensity with temperature decrease.
The intrinsic mechanism is under strong discussion due to the lack of its experimental proofs and data of AHE mechanisms apart.
Authors considered that the AHE sign can be different in various structures because of the reduction of symmetry and change of FS topology, due to dimensional quantization.
The intrinsic mechanism is under strong discussion due to the lack of its experimental proofs and data of AHE mechanisms apart.
Authors considered that the AHE sign can be different in various structures because of the reduction of symmetry and change of FS topology, due to dimensional quantization.
Online since: August 2011
Authors: Haruo Houjoh, Kai Feng, Shigeki Matsumura
The predicted results show good agreement with the experimental data.
Experimental data from a test rig is used to validate the calculation procedure.
Webber [3] developed a mathematical model to calculate the bending deflection of teeth by considering gear teeth as a non-uniform cantilever beam, which has been proved by many other researchers with experimental data [4].
Validation with Experimental Data a) 172 Nm, 1000 rpm b) 245 Nm, 1000 rpm Fig. 4 Experimental validation To validate the proposed model, dynamic behavior of the helical gear pairs is measured using the experimental apparatus as shown in Fig. 3.
Fig. 3 Schematic representation of the text rig The predicted rotational vibration of the driven gear in frequency domain are compared with experimental data, as shown in Fig. 4.
Experimental data from a test rig is used to validate the calculation procedure.
Webber [3] developed a mathematical model to calculate the bending deflection of teeth by considering gear teeth as a non-uniform cantilever beam, which has been proved by many other researchers with experimental data [4].
Validation with Experimental Data a) 172 Nm, 1000 rpm b) 245 Nm, 1000 rpm Fig. 4 Experimental validation To validate the proposed model, dynamic behavior of the helical gear pairs is measured using the experimental apparatus as shown in Fig. 3.
Fig. 3 Schematic representation of the text rig The predicted rotational vibration of the driven gear in frequency domain are compared with experimental data, as shown in Fig. 4.