Impact strength of the metal of weld joints made with powder wire in carbon dioxide

1979 ◽  
Vol 15 (7) ◽  
pp. 533-534
Author(s):  
N. T. Lositskii ◽  
S. N. Berezhnitskii ◽  
V. K. Krasil'nikov ◽  
Zh. E. Milyaeva
Keyword(s):  
Carbon Dioxide ◽  
Impact Strength ◽  
Powder Wire ◽  
Weld Joints

Optimizing GMAW parameters to achieve high impact strength of the dissimilar weld joints using Taguchi approach

2021 ◽  
Author(s):  
M. Ramarao ◽  
M. Francis Luther King ◽  
A. Sivakumar ◽  
V. Manikandan ◽  
M. Vijayakumar ◽  
...  
Keyword(s):  
Impact Strength ◽  
High Impact ◽  
Taguchi Approach ◽  
Dissimilar Weld ◽  
Weld Joints ◽  
High Impact Strength

Manufacturing Technique and Property Evaluations of Protective Textiles

2013 ◽  
Vol 457-458 ◽  
pp. 375-378
Author(s):  
Ching Wen Lou ◽  
Ting Ting Li ◽  
Mei Chen Lin ◽  
Jan Yi Lin ◽  
Jia Horng Lin
Keyword(s):  
Carbon Dioxide ◽  
Impact Strength ◽  
Carbon Dioxide Emission ◽  
High Strength ◽  
Puncture Resistance ◽  
Carbon Reduction ◽  
Nonwoven Fabrics ◽  
Constant Rate ◽  
The Difference ◽  
Protective Textiles

Global warming increases each day and causes people to pay more attention to the reduction of carbon dioxide emission in order to mitigate the increase in temperature. Reducing, reusing, and recycling can effectively reduce the emission of carbon dioxide, to attain goals of energy conservation and carbon reduction. This study aims to explore the difference in the punch resistance and impact strength between the polyethylene terephthalate (PET) nonwoven fabrics and PET/TPU honeycomb grid/PET (P/T/P) composites. Recycle PET, high strength PET, and low melting PET are made into PET nonwoven fabrics, two layers of which are laminated with a TPU honeycomb grid, the interlayer, to form P/T/P composites. The constant rate puncture resistance, dynamic puncture resistance, and impact strength of PET nonwoven fabrics and P/T/P composites are evaluated. The experiment results show that both the constant rate and dynamic puncture resistances of P/T/P composites are lower than those of PET nonwoven fabrics.

The Causes of Low Impact Strength of T23 Steel Weld Joints

2015 ◽  
Vol 226 ◽  
pp. 103-106
Author(s):  
Janusz Adamiec ◽  
Izabela Pikos ◽  
Michał Stopyra
Keyword(s):  
Heat Treatment ◽  
Impact Strength ◽  
Weld Metal ◽  
Post Weld Heat Treatment ◽  
Weld Joints ◽  
Heat Treated ◽  
Heat Treated Condition ◽  
The Impact ◽  
Welding Technique ◽  
Weld Heat

T23 is modern bainitic steel designed for use in supercritical boilers. According to producer’s data weldability of this steel is good enough to avoid post-weld heat treatment. However, some of the T23 weld joints in as-welded condition have not met the minimal ductility requirement. The impact test revealed significant differences between the joints in as-welded and heat treated condition. Metallographic and fractographic examinations have been conducted in order to explain those differences. The specimens with low impact strength were characterized by brittle fracture and non-tempered martensite presence in weld metal. It was concluded that avoiding formation of disadvantageous structure in weld metal requires conducting of post weld heat treatment or applying multi-pass welding technique with annealing run.

Effect of Supercritical Carbon Dioxide on the Mechanical Properties and the Morphology of PPO/POE Blends

2012 ◽  
Vol 562-564 ◽  
pp. 19-22
Author(s):  
Chun Ling Xin ◽  
Bao Rui Yan ◽  
Ya Dong He ◽  
Fen Dong
Keyword(s):  
Mechanical Properties ◽  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Impact Strength ◽  
Shear Viscosity ◽  
Rheological Behavior ◽  
Testing System ◽  
The Impact ◽  
Slit Die ◽  
Made In

Blending PPO and POE-g-MAH assisted by SCCO2 has been investigated. The in-line rheological behavior of PPO and POE-g-MAH containing SCCO2 were studied with the slit die and self made in line rheological testing system. The effect of SCCO2 on the reduction of shear viscosity of PPO is more obvious than that of POE-g-MAH. The shear viscosity of PPO reduced 36.7% with addition 4wt% CO2. Morphology of blends was inspected by SEM. The sizes of POE-g-MAH disperse phase decreased with the contents of CO2 increasing. As a result, the impact strength of blend is improved from 43.5KJ/m2 to 100.9KJ/m2 due to introduce 4wt% SCCO2 for PPO/POE-g-MAH (85/15) blends.

Electron Cytochemical Study of Carbon Dioxide Laser Effect on Rhesus Monkey Cornea

1974 ◽  
Vol 32 ◽  
pp. 224-225
Author(s):  
K. C. Tsou ◽  
J. Morris ◽  
P. Shawaluk ◽  
B. Stuck ◽  
E. Beatrice
Keyword(s):  
Carbon Dioxide ◽  
Electron Microscope ◽  
Rhesus Monkey ◽  
Carbon Dioxide Laser ◽  
Cytochemical Study ◽  
Laser Effect

While much is known regarding the effect of lasers on the retina, little study has been done on the effect of lasers on cornea, because of the limitation of the size of the material. Using a combination of electron microscope and several newly developed cytochemical methods, the effect of laser can now be studied on eye for the purpose of correlating functional and morphological damage. The present paper illustrates such study with CO2 laser on Rhesus monkey.

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