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Online since: October 2013
Authors: Jiang Yuan Hou, Yong Tao Shi, Jian Wei Zhou
These characteristics make the shape memory alloy ring hold device can better promote the healing of fracture, reduction of fracture have osteoporosis after healing, is regarded as the most promising material for internal fixation of the Department of orthopedics.
sample Hardness content (%) Tensile strength (Mpa) The elongation at break (%) Tensile stress (Mpa) PU34211 19.43 26.72 651.18 7.64 PU34321 19.92 11.49 642.51 4.18 PU34431 34.24 9.42 497.20 5.17 PU41321 23.27 12.82 483.64 5.16 PU41431 30.09 9.82 292.85 6.76 Figure 1 The performance data table mechanical sample Research and application of shape memory alloy materials in biomedicine As biomedical materials in the field of biomedical applications, shape memory alloy material shape recovery temperature can be easily adjusted to the body temperature, good biocompatibility, easy modification and functionalization, has broad application prospects in biomedical field.
Nickel titanium shape memory alloys connector is in a circular arc shape structure, in general there are 4 groups of ring arm, a toothed structure, connector of less than 10%-15% in diameter with clavicle fractures, Shen selected straight connector, 1/3 fracture with solitary type connector, connector in ice water in variable soft, with satisfactory reduction, open connector ring arm, the arm is arranged in the reduction of clavicle, front or rear, the use of hot saline gauze, connector arm shape automatically restore the restoring force generated by the tightly embracing in distal and proximal fracture, forming a reliable fixation, good for early start of upper limb and shoulder functional exercise.
After the successful of the fracture reduction, the memory alloy rib connector is fixed on the fracture deformation.
Olecranon fractures are intraarticular fracture, comminuted fracture with fractures of the coronoid process fracture, so the anatomical reduction and proper fixation and early functional exercise is particularly important, efficacy of plate fixation is better than the tension band fixation.
sample Hardness content (%) Tensile strength (Mpa) The elongation at break (%) Tensile stress (Mpa) PU34211 19.43 26.72 651.18 7.64 PU34321 19.92 11.49 642.51 4.18 PU34431 34.24 9.42 497.20 5.17 PU41321 23.27 12.82 483.64 5.16 PU41431 30.09 9.82 292.85 6.76 Figure 1 The performance data table mechanical sample Research and application of shape memory alloy materials in biomedicine As biomedical materials in the field of biomedical applications, shape memory alloy material shape recovery temperature can be easily adjusted to the body temperature, good biocompatibility, easy modification and functionalization, has broad application prospects in biomedical field.
Nickel titanium shape memory alloys connector is in a circular arc shape structure, in general there are 4 groups of ring arm, a toothed structure, connector of less than 10%-15% in diameter with clavicle fractures, Shen selected straight connector, 1/3 fracture with solitary type connector, connector in ice water in variable soft, with satisfactory reduction, open connector ring arm, the arm is arranged in the reduction of clavicle, front or rear, the use of hot saline gauze, connector arm shape automatically restore the restoring force generated by the tightly embracing in distal and proximal fracture, forming a reliable fixation, good for early start of upper limb and shoulder functional exercise.
After the successful of the fracture reduction, the memory alloy rib connector is fixed on the fracture deformation.
Olecranon fractures are intraarticular fracture, comminuted fracture with fractures of the coronoid process fracture, so the anatomical reduction and proper fixation and early functional exercise is particularly important, efficacy of plate fixation is better than the tension band fixation.
Online since: February 2010
Authors: Roumen H. Petrov, Leo A.I. Kestens, Jurij J. Sidor
The roll configuration, the thickness
reduction as well as the rolling temperature affect the texture evolution.
The cast block A was asymmetrically hot rolled (ASHR) with ~89% reduction in a laboratory rolling mill with a ratio of roll diameters D1/D2 = 1.3.
Material B was symmetrically cold rolled with 70% reduction, followed by asymmetric cold rolling (18% reduction) with roll diameter ratio of 1.5.
The orientation data were postprocessed with the MTM-FHM software developed by Van Houtte [5].
The evolved texture is weak irrespective of the total thickness reduction of ~87% due to the strain path change.
The cast block A was asymmetrically hot rolled (ASHR) with ~89% reduction in a laboratory rolling mill with a ratio of roll diameters D1/D2 = 1.3.
Material B was symmetrically cold rolled with 70% reduction, followed by asymmetric cold rolling (18% reduction) with roll diameter ratio of 1.5.
The orientation data were postprocessed with the MTM-FHM software developed by Van Houtte [5].
The evolved texture is weak irrespective of the total thickness reduction of ~87% due to the strain path change.
Online since: October 2019
Authors: Mariana Dana Damaceanu
They are suitable for use in electrochemical sensors or electroluminescent devices, in data storage, telecommunications and other high-tech applications.
Furthermore, a reduction peak appeared at 0.31 V during the reverse scan, indicating the copolymer deposition during the first cycle on the working electrode surface.
No clear further reduction of the oxidized species was observed in the reverse scan.
In the cathodic region, a reduction peak at -1.43V vs.
Besides the oxidation process tacking place at N atoms, the copolymer film showed a stable reduction process at the oxadiazole unit, leading to very good electron injecting and transporting properties.
Furthermore, a reduction peak appeared at 0.31 V during the reverse scan, indicating the copolymer deposition during the first cycle on the working electrode surface.
No clear further reduction of the oxidized species was observed in the reverse scan.
In the cathodic region, a reduction peak at -1.43V vs.
Besides the oxidation process tacking place at N atoms, the copolymer film showed a stable reduction process at the oxadiazole unit, leading to very good electron injecting and transporting properties.
Influence of the Partitioning Treatment on the Mechanical Properties of a 0.3C-1.5Si-3.5Mn Q&P Steel
Online since: May 2014
Authors: Jilt Sietsma, Farideh Hajy Akbary, Maria Jesus Santofimia
Tempering of M1 also leads to a reduction of its dislocation density.
Volume fractions of M1 (VM1) were determined by applying the lever rule to the dilatometer data, where error bars were considered to be ±2%.Volume fractions of M2 (VM2) were calculated by balancing the volume fractions of the microstructural constituents.
In this time interval, only VM2 changes its value by about 3%, which is too small to lead to such a reduction in tensile strength.
It can be argued that this strength reduction is due to the tempering of M1 at the partitioning temperature.
· An observed reduction of the tensile strength of the Q&P microstructures after partitioning between 10 and 100 s is attributed to the reduction of strength of M1 due to the tempering during the partitioning step.
Volume fractions of M1 (VM1) were determined by applying the lever rule to the dilatometer data, where error bars were considered to be ±2%.Volume fractions of M2 (VM2) were calculated by balancing the volume fractions of the microstructural constituents.
In this time interval, only VM2 changes its value by about 3%, which is too small to lead to such a reduction in tensile strength.
It can be argued that this strength reduction is due to the tempering of M1 at the partitioning temperature.
· An observed reduction of the tensile strength of the Q&P microstructures after partitioning between 10 and 100 s is attributed to the reduction of strength of M1 due to the tempering during the partitioning step.
Online since: May 2014
Authors: Jiří Buršík, František Kováč, Ivan Petryshynets, Martin Sopko
Introduction
As an aspect of the worldwide trend towards energy consumption and preservation of the natural environment, the reduction of electrical consumption has become an extremely crucial matter in recent years [1].
This proposed procedure could lead to a marked reduction of production costs of the grain oriented electrical steels providing energy savings with favorable impact on environment.
After smelting, the obtained slabs which weighed 8 kg with 40mm thickness were subjected to hot rolling process with final rolling temperature 900°C and reduction on 2.2 mm thickness and to three different coiling temperatures 585°C, 650°C, 700°C.
The corresponding thickness reduction was 4 %.
Based on these data the annealing temperature for our steel was chosen to be 1075ºC.
This proposed procedure could lead to a marked reduction of production costs of the grain oriented electrical steels providing energy savings with favorable impact on environment.
After smelting, the obtained slabs which weighed 8 kg with 40mm thickness were subjected to hot rolling process with final rolling temperature 900°C and reduction on 2.2 mm thickness and to three different coiling temperatures 585°C, 650°C, 700°C.
The corresponding thickness reduction was 4 %.
Based on these data the annealing temperature for our steel was chosen to be 1075ºC.
Online since: November 2011
Authors: Shu Zhi Gao, Jing Yang, Jun Fan
(7) end
Simulation Research
Data Preprocessing.
The method guarantees the data is between [0,1][7].
Firstly, we build the dynamic model of distillation tower temperature using 150 groups of sample data.
Then we use RBF neural network to train with the 150 sets of sample data, and we get Fig.5 and Fig.6.
In this article we build the model of distillation process by using D-FNN according to real data which improved the model.
The method guarantees the data is between [0,1][7].
Firstly, we build the dynamic model of distillation tower temperature using 150 groups of sample data.
Then we use RBF neural network to train with the 150 sets of sample data, and we get Fig.5 and Fig.6.
In this article we build the model of distillation process by using D-FNN according to real data which improved the model.
Online since: May 2011
Authors: Peng Zhang, Tie Jun Zhao, Rong Jiang, Jian Guang Xu
It turned out that the reduction of the absorption of moisture and concrete penetration of harmful media are effectively influenced by addition of silane emulsion.
From the measured data the coefficient of capillary absorption A can be determined.
The coefficient of capillary suction as determined from these data is also listed in Table 3.
Integral ox blood concrete in the course of greater wear still remain the ability of reduction of water absorption.
From the measured data the coefficient of capillary absorption A can be determined.
The coefficient of capillary suction as determined from these data is also listed in Table 3.
Integral ox blood concrete in the course of greater wear still remain the ability of reduction of water absorption.
Online since: September 2011
Authors: Min Xiao, Xue Dao Shu
The reduction of the wall thickness equals to the feed amount of the compressing roll
(2) Where, is the reduction of the wall thickness, is the feed speed, is the rolling time.
As it shown in Fig.5, the displacement of the guiding roll center has good linearity through researching on the data calculated by MATLAB.
Therefore, it is available to select appropriate number of the displacement data of the guiding roll center inserting to ABAQUS to control the movement of the guiding roll.
(2) Where, is the reduction of the wall thickness, is the feed speed, is the rolling time.
As it shown in Fig.5, the displacement of the guiding roll center has good linearity through researching on the data calculated by MATLAB.
Therefore, it is available to select appropriate number of the displacement data of the guiding roll center inserting to ABAQUS to control the movement of the guiding roll.
Online since: June 2014
Authors: Zbyněk Keršner, Pavla Rovnaníková, Pavel Schmid
Introduction
The reduction of carbon dioxide emissions is an important goal during cement and concrete production.
Diagrams of load vs. displacement (deflection in the middle of the span), known as l–d diagrams, were recorded using a HBM SPIDER 8 data logger.
The data gained for all the tested materials can be found summarised in Figs. 1 and 2, which contain the resulting values of the mechanical fracture parameters for all materials in the following order: compressive strength, static elastic modulus, effective fracture toughness, and specific fracture energy.
Increasing the quantity of zeolite in concrete causes a slight reduction in volume density of about 1 to 8% compared to the reference concrete.
Diagrams of load vs. displacement (deflection in the middle of the span), known as l–d diagrams, were recorded using a HBM SPIDER 8 data logger.
The data gained for all the tested materials can be found summarised in Figs. 1 and 2, which contain the resulting values of the mechanical fracture parameters for all materials in the following order: compressive strength, static elastic modulus, effective fracture toughness, and specific fracture energy.
Increasing the quantity of zeolite in concrete causes a slight reduction in volume density of about 1 to 8% compared to the reference concrete.
Online since: May 2015
Authors: T.H. Chiew, Lokman Abdullah, Zamberi Jamaludin, J. Jamaludin
The XYZ stage is linked to a digital signal processing unit, a DS1104 DSP board connected to computer with MATLAB software for application of control design and data collection.
Results and Discussion The force observer is applied on the XYZ Stage where actual measured cutting force data were injected into the system.
Each frequency involved has improvement in tracking error reduction about; 2.8Hz = 99.14%, 18Hz = 82.31% and 35Hz = 60.29%.
Thus, the performance of the multiple-harmonic force observer is better in term of position error reduction compared to single-harmonic observer.
Results and Discussion The force observer is applied on the XYZ Stage where actual measured cutting force data were injected into the system.
Each frequency involved has improvement in tracking error reduction about; 2.8Hz = 99.14%, 18Hz = 82.31% and 35Hz = 60.29%.
Thus, the performance of the multiple-harmonic force observer is better in term of position error reduction compared to single-harmonic observer.