Development and Properties of a New Correction Instrument of Pectus Excavatum

2009 ◽  
Vol 610-613 ◽  
pp. 1327-1330
Author(s):  
Yu Ling Hu ◽  
Xue Bao Yu ◽  
Wei Dong Miao ◽  
Gang Liu
Keyword(s):  
Mechanical Properties ◽  
Minimally Invasive ◽  
Pectus Excavatum ◽  
Testing Machine ◽  
Pure Titanium ◽  
Material Testing ◽  
Invasive Technique ◽  
Nuss Procedure ◽  
Universal Material Testing Machine ◽  
Material Testing Machine

A new correction instrument of pectus excavatum is introduced which is designed for a minimally invasive technique (Nuss procedure). The instrument was made of pure titanium plates, and finished by machining, surface treatment and so on. The instrument was made up of correcting bar and fixing bar. The mechanical properties of the instrument was measured with electron universal material testing machine, the safety and validity was verified by clinical doctors after being implanted into the patient. Results showed that the mechanical properties of the instrument keep constantly after implantation for two years. It is lighter than the like product, and can lighten the patent’s and the doctor’s operation bearing. It had been applied in national hospitals, and results showed that it was of better biocompatibility, and few complications were found. Clinical treatment effects were satisfactory.

scholarly journals Effects of Zr, Y on the Microstructure and Properties of As-Cast Cu-0.5Y-xZr (wt.%) Alloys

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1084
Author(s):  
Dong Liang ◽  
Ning Wang ◽  
Yuxiang Wang ◽  
Zhenjie Liu ◽  
Ying Fu
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Tensile Strength ◽  
Copper Alloys ◽  
Testing Machine ◽  
Elongation Rate ◽  
Nominal Composition ◽  
Microstructure And Properties ◽  
Universal Material Testing Machine ◽  
Material Testing Machine

In this paper, the microstructure and properties of as-cast Cu-Y-Zr alloys with different Zr content were studied in order to investigate whether the precipitates in copper alloys would interact with each other by adding Y and Zr simultaneously. As-cast Cu-0.5Y-xZr (wt.%, x = 0.05 and 0.1, nominal composition) alloys were prepared by vacuum melting in this study. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and transmission electron microscopy (TEM) were used to observe the microstructure of the alloys. The mechanical properties of the alloys were tested by universal material testing machine at room temperature. The effects of Zr content on the microstructure and mechanical properties of the alloys were explored. As shown by the research results, in the as-cast Cu-0.5Y-xZr (wt.%) alloys, the precipitated phase was the Cu5Y/Cu5Zr phase and ranged from 10 nm to 70 nm in size; when the Zr content increased from 0.05 wt.% to 0.1 wt.%, both the tensile strength and elongation rate of the alloys increased; when the Zr content was 0.1 wt.%, the tensile strength was 225 MPa and the elongation rate was 22.5%.

Crystal Morphology and Thermal Properties of PTT/POE/OMMT Nanocomposites

2011 ◽  
Vol 181-182 ◽  
pp. 39-42
Author(s):  
Ming Tao Run ◽  
Qing Chang Zhang ◽  
Wen Zhou ◽  
Yu Zhong
Keyword(s):  
Crystal Morphology ◽  
Testing Machine ◽  
Crystallization Rate ◽  
Material Testing ◽  
Melt Crystallization ◽  
Nucleation Agent ◽  
Scanning Calorimetry ◽  
Lower Melting Point ◽  
Universal Material Testing Machine ◽  
Material Testing Machine

The crystal morphology, melt-crystallization and mechanical properties of poly (trimethylene terephthalate)/maleinized poly (octene-ethylene)/organo-montmorillonite nanocomposites were investigated by using polarized optical microscopy (POM), differential scanning calorimetry (DSC) and universal material testing machine, respectively. The results suggest that the nanocomposites form smaller or imperfect microcrystallites with lower melting point due to the influence of OMMT components and the nanocomposites have increased crystallization rate because OMMT is an effective nucleation agent. However, the crystallinity decreases because of the thickening effect of OMMT in the composites. The nanocomposite with 2%OMMT has the largest tensile and impact strength.

scholarly journals ANALISIS KEKUATAN TARIK KAMPUH V DAN KAMPUH I SAMBUNGAN LAS BAJA KARBON RENDAH YANG TERDAPAT PADA BESI IWF 400

2019 ◽  
Author(s):  
Irzal ◽  
syahrul
Keyword(s):  
Testing Machine ◽  
Material Testing ◽  
Test Machine ◽  
Type I ◽  
Average Value ◽  
Joint Connection ◽  
Connection Type ◽  
Universal Material Testing Machine ◽  
Material Testing Machine ◽  
Welding Position

by using connection type I. To get a good welding result is determined several factors, including the properties of material welding, connection type, welding position, and electrode used. In a welding project, there is still a welder that only uses I in the weld IWF 400 connecting iron while the thickness of the material 13 mm. This study aims to determine the effect of the use of campuh against the strength of weld joint connection using LB 52U 2.6 mm Electrode and RD 7018 3.2 mm electrode with AC Flow. In this study using experimental method begins with making specimens. With the collection of 7 specimens consisting of 3 specimens with welding treatment using Camp V, 3 specimens with welding treatment using Camp I and 1 IWF 400 specimens without welding treatment. From the results of research conducted on specimens by making and testing specimens with a tensile test machine Hydraullic Universal Material Testing Machine then obtained on the specimen without welding average value of Maximum (max) 41,28 kgf/mm². In welded specimens with a connection of the V values the average value of the Maximum (max) 39,82 kgf/mm². On a welded specimen with a maximum I knot connection (max) 38,32 kgf/mm².The results of this study indicate the results of iron welding IWF 400 using camp V greater value voltage 39.82 kgf / mm². From the maximum voltage value obtained from this study it is recommended that iron welding IWF 400 uses V.

scholarly journals Influence of Vanadium Microalloying on Microstructure and Property of Laser-Cladded Martensitic Stainless Steel Coating

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 826
Author(s):  
Wenfeng Hu ◽  
Hongmei Zhu ◽  
Jipeng Hu ◽  
Baichun Li ◽  
Changjun Qiu
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Martensitic Stainless Steel ◽  
Testing Machine ◽  
Material Testing ◽  
Number Density ◽  
Steel Coating ◽  
Universal Material Testing Machine ◽  
Property Changes ◽  
Material Testing Machine

Martensitic stainless steel (MSS) coatings with different vanadium (V) contents (0–1.0 wt%) by microalloying have been successfully fabricated utilizing a unique laser cladding technique. The microstructure and properties of the resulting MSS coatings, with and without element V addition, have been carefully investigated by various advanced techniques, including XRD, SEM, TEM, microhardness tester, universal material testing machine, and electrochemical workstation. It was found that the V-free coating was mainly composed of martensite (M) and ferrite (F), trace M23C6 and M2N, while the V-bearing coatings consisted of M, F, M23C6, and VN nano-precipitates, and their number density increased with the increase of V content. The V microalloying can produce a significant impact on the mechanical properties of the resulting MSS laser-cladded specimens. As the V content increased, the elongation of the specimen increased, while the tensile strength and microhardness increased firstly and then decreased. Specifically, the striking comprehensive performance can be optimized by microalloying 0.5 wt% V in the MSS coating, with microhardness, tensile strength, yield strength, and elongation of 500.1 HV, 1756 MPa, 1375 MPa, and 11.9%, respectively. However, the corrosion resistance of the specimens decreased successively with increasing V content. The microstructure mechanisms accounting for the property changes have been discussed in detail.

Study on Structure and Properties of Degradable Polymer/Modified Nano-Si02 Composites

2013 ◽  
Vol 773 ◽  
pp. 514-519
Author(s):  
Hong He ◽  
Zhu Long ◽  
Lei Dai ◽  
Yong Lv
Keyword(s):  
Mechanical Properties ◽  
Testing Machine ◽  
Degradation Behavior ◽  
Melt Mixing ◽  
Butylene Succinate ◽  
Sem Image ◽  
Degradable Polymer ◽  
Infrared Spectrometer ◽  
Universal Material Testing Machine ◽  
Material Testing Machine

By using Isopropyl tri (dioctylpyrophosphate) titanate modified nanoSi02. Poly (ε-caprolactone)(PCL) and Poly (Butylene Succinate Adipate)(PBSA) blends was prepared by melt mixing. Its structure and mechanical properties were studied respectively with infrared spectrometer (FT-IR), universal material testing machine and scanning electron microscope (SEM),and analysis the degradation behavior by soil buried experiment The results showed that the modified nanoSi02 content is 4%, the mechanical properties of composite degradation material is improved obviously. The SEM results showed that a low amount of modified nanoSi02 can be dispersed evenly in the blends, while agglomeration of was observed in blends with increasing modified nanoSi02 content. Compared with SEM image after degradation, the degradation behavior of the composites was good.

The Effect of RE and Ca on Corrosion Resistance of AZ91

2005 ◽  
Vol 488-489 ◽  
pp. 869-872 ◽  
Author(s):  
Yu Fan ◽  
Guo Hua Wu ◽  
Hong Tao Gao ◽  
Chun Quan Zhai
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Testing Machine ◽  
X Ray Diffraction ◽  
X Ray ◽  
Effective Barrier ◽  
Mechanical Properties And Corrosion ◽  
Universal Material Testing Machine ◽  
Material Testing Machine

The effects of RE and Ca on the mechanical properties and corrosion behavior of AZ91 have been studied by Zwick electronic universal material testing machine, X-ray diffraction, corrosion test and polarization experiment. The results showed that the addition of RE and Ca could improve the mechanical properties and corrosion resistance of AZ91 alloys. The ultimate tensile strength of AZ91 with addition of 1%RE and 1%Ca increased by 15.9%. The addition of 1%RE in AZ91 made the corrosion rate decrease from 0.453mg·cm-2·d-1 to 0.178mg·cm-2·d-1. Furthermore, with adding 1%Ca in AZ91+1%RE, the corrosion rate of AZ91 decreased to 0.086mg·cm-2·d-1 due to the formation of reticular Al2Ca phases, which acts as an effective barrier against corrosion.

Study on Elongation Properties of Car Roof Interior Fabric

2014 ◽  
Vol 556-562 ◽  
pp. 36-39
Author(s):  
Wei Lai Chen ◽  
Lin Yan Wan ◽  
Wei Hong Zhan
Keyword(s):  
Testing Machine ◽  
Material Testing ◽  
Knitted Fabric ◽  
Deformation Ratio ◽  
Universal Material Testing Machine ◽  
Warp Knitted Fabric ◽  
Material Testing Machine ◽  
Dynamic Elongation ◽  
General Standard

Elongation properties of car roof interior fabric were studied in this article.The FM02-11 type universal material testing machine was employed to test the static and dynamic elongation properties of warp knitted napped fabric 1,2,3,warp knitted fabric 1,2,pile composite fabric A1,A2,A3 and sponge composite fabric C1,C2,C3,C4. The results indicated all can meet the general standard for car interior ceiling fabric.According to the dynamic elongation, the bigger the deformation ratio, the better the formability.

Mechanical Properties of Rice Straw Particle/HDPE Composites

2013 ◽  
Vol 457-458 ◽  
pp. 227-230
Author(s):  
Gui Hua Chen ◽  
Dan Dan Wang
Keyword(s):  
Mechanical Properties ◽  
Rice Straw ◽  
Coupling Agent ◽  
Testing Machine ◽  
Processing Conditions ◽  
Hot Press ◽  
Molding Process ◽  
Process Effects ◽  
Universal Material Testing Machine ◽  
Material Testing Machine

The rice-straw particle /HDPE composites were made by compression molding process. Effects of the content of the rice-straw particle, the dosage of the titanate coupling agent and the time of hot-press were analyzed. Mechanical properties of the composites were tested, such as MOR, MOE by universal material testing machine. The result showed that rice-straw particle /HDPE composites have relatively good mechanical properties. The effect of the content of the rice-straw particle on the MOR and MOE of rice-straw particle /HDPE composites are very significant.The mechanical properties of the composite material improved by adding titanate coupling agent. The optimized processing conditions are that the content of the rice-straw particle is 50%,the dosage of the titanate coupling agent is 3%,the time of hot-press is 4 min.

The Effect of Percentage of Primary α on Mechanical Properties of Bimodal Microstructure of TC4

2011 ◽  
Vol 418-420 ◽  
pp. 173-178
Author(s):  
Jing Min Yang ◽  
Yang Wei Wang ◽  
Ju Bin Gao ◽  
Pan Xiong
Keyword(s):  
Mechanical Properties ◽  
Split Hopkinson Pressure Bar ◽  
Testing Machine ◽  
Bimodal Microstructure ◽  
Hopkinson Pressure Bar ◽  
Different Temperatures ◽  
Split Hopkinson ◽  
Universal Material Testing Machine ◽  
Pressure Bar ◽  
Material Testing Machine

In order to discuss the effect of content of primary α on properties of bimodal microstructure, the TC4 sheet in rolling state was heat treated at different temperatures of 10~50°Cbelow the β-transus temperature, then a series of bimodal microstructures with different content of primary α were obtained by air-cooled procedure. Quasi-static and dynamic compress tests were carried out with universal material testing machine and Split Hopkinson Pressure Bar (SHPB) respectively. The results indicated that the relationship between mechanical properties and primary α is irregular, and that bimodal microstructure with 25% primary α shows a better combination of strength and ductility.

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