scholarly journals Recent advance in the resources and material technology. Improvement on the high-temperature bedrock drilling by the practical application of a one-boom hydraulic pressure drill jumbo cum cabin.

1997 ◽  
Vol 113 (6) ◽  
pp. 413-419
Author(s):  
MUTSUJI NANAMI
Keyword(s):  
High Temperature ◽  
Hydraulic Pressure ◽  
Practical Application ◽  
Material Technology ◽  
Technology Improvement

Research on Digital Radiographic Inspection of In-Service Fiber Reinforced Plastic Pipe

2020 ◽  
Author(s):  
Shu H. Liu ◽  
Ju Ding ◽  
Jian F. Zhang
Keyword(s):  
Wall Thickness ◽  
Ultrasonic Method ◽  
Hydraulic Pressure ◽  
Petrochemical Plant ◽  
Thickness Gauge ◽  
Fiber Reinforced ◽  
Material Technology ◽  
Fiber Reinforced Plastic ◽  
Plastic Pipe ◽  
Reinforced Plastic

Abstract With the development of material technology, non-metallic materials are applied to pressure pipes in petrochemical plant. Fiber reinforced plastic (FRP) is widely used because high mechanical strength and corrosion resistance. The non-metallic pipeline has been running for more than 20 years in petrochemical plant of China. Due to the fiber material anisotropy, it is difficult to measure thickness and detect defect by conventional ultrasonic method in FRP inspection. According to Chinese pressure pipeline inspection laws and regulations, the main inspection methods are macroscopic examination and hydraulic pressure test. The inspection of non-metallic pipelines has not been specified in detail. Compared with traditional radiographic detection, digital radiographic detection has better contrast and image processing technology, so digital radiographic detection has more advantages in thickness measurement and corrosion detection. Elbows are most prone to corrosion defects due to fluid erosion. In this paper, fiber reinforced plastic pipe is detected by digital radiographic technology. In digital radiographic detection, appropriate parameters and accurate measurement are proposed. The accurate wall thickness of the pipe is obtained and the internal defects are detected. By comparing the measurement results with the actual wall thickness, the measurement accuracy of digital radiographic detection could meet the requirement of ultrasonic thickness gauge in NB/T47013.3. Digital radiographic technology is strongly recommended for FRP pipeline periodic inspection.

Development of High Temperature Tantalum Polymer Capacitors

2018 ◽  
Vol 2018 (1) ◽  
pp. 000647-000651
Author(s):  
Antony P. Chacko ◽  
James Chen ◽  
Chris Stolarski ◽  
Cristina MotaCaetano ◽  
Philip Lessner
Keyword(s):  
High Temperature ◽  
Conducting Polymers ◽  
Protective Coating ◽  
Series Resistance ◽  
Oxygen Permeation ◽  
Equivalent Series Resistance ◽  
Study Analysis ◽  
Life Test ◽  
Material Technology ◽  
Polymer Oxidation

Abstract This paper focuses on the development of new 150°C capable surface mount polymer tantalum capacitors and the enabling technologies. The conductivity stability of the conducting polymers at high temperatures as well as the equivalent series resistance (ESR) stability of the polymer tantalum capacitors at these temperatures were investigated in this study. Analysis of the oxygen permeation paths causing polymer oxidation and materials solutions for preventing oxygen permeation and polymer oxidation are described. The development of new cathode and protective coating material technology is presented. Their effectiveness in providing high temperature ESR stability is demonstrated by high temperature life test at 150°C of polymer capacitors.

Preparation and Study on Temperature-Resistance Environment-Friendly Ink Based on Natural Pigment and Soybean Oil

2013 ◽  
Vol 469 ◽  
pp. 13-16
Author(s):  
Zhuang Liu ◽  
Qi Liu ◽  
Liu Yang ◽  
Jing Yi Sun ◽  
Gui Yu Ma ◽  
...  
Keyword(s):  
High Temperature ◽  
Soybean Oil ◽  
Chain Structure ◽  
Practical Application ◽  
Application Process ◽  
Natural Pigment ◽  
Environment Friendly ◽  
Temperature Resistance ◽  
Molecular Bond ◽  
Practical Temperature

Traditional ink based on natural pigment and soybean oil has disadvantages of poor temperature adaptive in application process. This project broke the limitations that stocks printing with traditional ink based on natural pigment and soybean oil could not be used for heating. Developing practical temperature-resistance environment-friendly ink based on natural pigment and soybean oil is of great importance. The experiment introduced the silicone material, and made full use of its characteristic. The Si-O bond of silicone can be 121 kcal/mole, and its molecular bond can not be broken down at a high temperature (or exposure to radiation). The property of high temperature resistance mainly depends on its unique functional group or long polymer chain structure. The experiment studied temperature resistance environment-friendly ink's performance in color, in order to improve its practical application value.

scholarly journals Future Material Needs for Low Emissions Gas Turbines

1997 ◽  
Author(s):  
Jayesh M. Mehta ◽  
James Askew
Keyword(s):  
High Temperature ◽  
Gas Turbines ◽  
Technology Development ◽  
Direct Injection ◽  
Weight Ratio ◽  
Environmental Safety ◽  
Operating Conditions ◽  
Material Technology ◽  
Lean Burn ◽  
The Future

The modern low emissions gas turbines operate under some of the most challenging operating conditions as more demands are exercised on their performance. For example, the future engines will have higher thrust-to-weight ratio, improved fuel efficiencies, and high overall pressure ratios. Furthermore, the environmental safety needs will dictate many of the future low emissions combustor designs to be either Lean-Premixed (LP), Lean Direct Injection (LDi), Rich-burn-Quick quench-Lean burn (RQL) or catalytic. These will impose additional demands on developing unique high temperature materials that can survive in oxidizing and reducing environments, under high temperature and pressure conditions, and have other material properties such as superior strength and stiffness. In this paper, first we discuss the salient features of advanced low-emissions gas turbines and their needs for unique material technology development. Next, we discuss the state-of-the-art material technology development as it is applied to current gas turbines. And, finally we review the material developments that will be needed for the future gas turbine engines.

Bending Behavior of Glass Fiber Grid Reinforced Gussasphalt

2015 ◽  
Vol 744-746 ◽  
pp. 754-757
Author(s):  
Bo Gao ◽  
Min Wang ◽  
Zeng Heng Hao
Keyword(s):  
Composite Material ◽  
High Temperature ◽  
Glass Fiber ◽  
Bending Strength ◽  
Bending Test ◽  
Material Technology ◽  
Bending Performance ◽  
Three Point Bending ◽  
Bending Strain ◽  
Bending Behavior

In combination with the composite material technology, add the glass fiber grid into gussasphalt deck pavement system to form glass fiber grid reinforced gussasphalt. Analysis shows that adding the grid can increase the bending performance. Three point bending test was did to do verification and results were indicate that glass fiber grid can improve the anti-bending strength and anti-bending strain in high temperature.

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