High power density laser and wobbling technique improve welding technology in aluminum alloys

Scilight ◽  
2021 ◽  
Vol 2021 (32) ◽  
pp. 321105
Author(s):  
Sayali S Avachat
Keyword(s):  
Aluminum Alloys ◽  
Power Density ◽  
High Power ◽  
High Power Density ◽  
Welding Technology

Features and Application of Electron Beam Welding Technology

2015 ◽  
Vol 1120-1121 ◽  
pp. 1308-1312
Author(s):  
Ming Feng Li ◽  
Zheng Hong Zhu
Keyword(s):  
Electron Beam ◽  
Power Density ◽  
High Power ◽  
Electron Beam Welding ◽  
High Ratio ◽  
High Power Density ◽  
High Quality ◽  
Welding Equipment ◽  
Welding Technology ◽  
Wide Range

Electron beam welding technology is a mature special welding technology. The advantage of electron beam welding like these: high power density, high ratio of depth-to-width, high-quality welds. Electron beam welding equipment has been independently developed by tracking and bringing in. Electron beam welding technology has a wide range of applications in the aerospace, automotive, medical and other branches of industry, the field of applications is also expanding with the improved welding equipment. According to the demand of research and market, Electron beam welding technology will move toward the direction of universal, integrated, information-oriented in the future.

Weldability improvement by wobbling technique in high power density laser welding of two aluminum alloys: Al-5052 and Al-6061

2021 ◽  
Vol 33 (3) ◽  
pp. 032015
Author(s):  
H. Ramiarison ◽  
N. Barka ◽  
C. Pilcher ◽  
E. Stiles ◽  
G. Larrimore ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Laser Welding ◽  
Power Density ◽  
High Power ◽  
High Power Density ◽  
Al 6061

Welding with high brilliance lasers and high power density

2010 ◽  
Author(s):  
Andreas Patschger ◽  
Markus Franz ◽  
Jens Bliedtner ◽  
Jean Pierre Bergmann
Keyword(s):  
Power Density ◽  
High Power ◽  
High Power Density

High power density of AlGaAs/InGaAs doped-channel FETs with low DC power supply

2001 ◽  
Vol 37 (9) ◽  
pp. 597
Author(s):  
H.C. Chiu ◽  
S.C. Yang ◽  
F.T. Chien ◽  
Y.J. Chan
Keyword(s):  
Power Density ◽  
High Power ◽  
Power Supply ◽  
High Power Density ◽  
Dc Power ◽  
Dc Power Supply

Investigation on Key Parameters of NI HTS Field Coils for High Power Density Synchronous Motors

2021 ◽  
Vol 31 (5) ◽  
pp. 1-5
Author(s):  
Uijong Bong ◽  
Chaemin Im ◽  
Jonghoon Yoon ◽  
Soobin An ◽  
Seok-Won Jung ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
High Power Density ◽  
Synchronous Motors

scholarly journals Near-field thermophotovoltaics for efficient heat to electricity conversion at high power density

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Rohith Mittapally ◽  
Byungjun Lee ◽  
Linxiao Zhu ◽  
Amin Reihani ◽  
Ju Won Lim ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
High Efficiency ◽  
Near Field ◽  
Electrical Power ◽  
Photovoltaic Cells ◽  
High Power Density ◽  
Pv Cell ◽  
Electrical Power Output ◽  
Power Densities

AbstractThermophotovoltaic approaches that take advantage of near-field evanescent modes are being actively explored due to their potential for high-power density and high-efficiency energy conversion. However, progress towards functional near-field thermophotovoltaic devices has been limited by challenges in creating thermally robust planar emitters and photovoltaic cells designed for near-field thermal radiation. Here, we demonstrate record power densities of ~5 kW/m2 at an efficiency of 6.8%, where the efficiency of the system is defined as the ratio of the electrical power output of the PV cell to the radiative heat transfer from the emitter to the PV cell. This was accomplished by developing novel emitter devices that can sustain temperatures as high as 1270 K and positioning them into the near-field (<100 nm) of custom-fabricated InGaAs-based thin film photovoltaic cells. In addition to demonstrating efficient heat-to-electricity conversion at high power density, we report the performance of thermophotovoltaic devices across a range of emitter temperatures (~800 K–1270 K) and gap sizes (70 nm–7 µm). The methods and insights achieved in this work represent a critical step towards understanding the fundamental principles of harvesting thermal energy in the near-field.

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