Results 101 to 110 of about 1,610 (129)
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Micro topography of different material surface by solid abrasive lapped at high speed
SPIE Proceedings, 2007The principle of solid abrasives lapping is that the abrasives are fixed and made into a special lapping tool; the workpiece is lapped in high speed lapping machine tool. It possesses many advantages compared with traditional low speed lapping with particulate abrasives, e.g.
Chunlin Tian +3 more
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High-Speed Friction Stir Lap Welding of Al Alloys
2019Friction stir lap welding (FSLW) with linear speed of 1 m/min or higher can open up opportunities for industrial implementation. This paper will provide an overview of several challenges and mitigation strategies to produce effective joints between several Al alloys.
Piyush Upadhyay, Xiao Li, Tim Roosendaal
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Adhesively bonded lap-joints for the composite-steel shell structure of high-speed vehicles
Composite Structures, 1997Abstract Recently the design and manufacture of lightweight train structures have become important in order to increase speed. Composite train structures have many advantages over conventional steel or aluminum train structures because of their high specific strength, modulus and high damping capacity, which is beneficial for NVH (noise, vibration ...
Kum Cheol Shin +3 more
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Modelling the spot shape influence on high-speed transmission lap welding of thermoplastics films
Optics and Lasers in Engineering, 2008Abstract Modelling high-speed laser lap welding of thermoplastic films has been accomplished and the influence of laser beam spot shape, dimensions, and position relative to sample displacement was analysed. Engineering parameters predicted by the model were applied to lap weld of high- and low-density polyethylene transparent samples with thickness
João M.P. Coelho +2 more
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A New Method of Reducing Shock between Press Head and Press Disk in High Speed Lapping
Advanced Materials Research, 2007Considering the shock between the press head and press disk in high speed lapping is more serious, this paper proposes a new method to reduce this shock. By this method a hole is machined for air passing on the press head axis. The topper of the hole is connecting with a pressure air resource. Thus an air cushion between the press head bottom and press
J.D. Yang +4 more
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Applied Mechanics and Materials, 2012
This paper focuses on integrated development of high-speed lapping technology, expert system and network technology. Data mining objects are high-speed lapping experiments and previous experiences, in the plane high-speed lapping processing; the network technology is embedded in NC machine, through inputting the processing requirements of the work ...
Jian Dong Yang, Duo Long
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This paper focuses on integrated development of high-speed lapping technology, expert system and network technology. Data mining objects are high-speed lapping experiments and previous experiences, in the plane high-speed lapping processing; the network technology is embedded in NC machine, through inputting the processing requirements of the work ...
Jian Dong Yang, Duo Long
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Key Engineering Materials, 2007
Ultrasonic aided high speed lapping with solid abrasive material was put forward aimed at the precision finishing of nano ZTA engineering ceramic. Through theoretical analysis and contrast lapping experiments, the influences of ultrasonic assistance on the surface machining quality were clarified.
Feng Jiao +3 more
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Ultrasonic aided high speed lapping with solid abrasive material was put forward aimed at the precision finishing of nano ZTA engineering ceramic. Through theoretical analysis and contrast lapping experiments, the influences of ultrasonic assistance on the surface machining quality were clarified.
Feng Jiao +3 more
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Mechanical reliability evaluation of Sn-37Pb solder joint using high speed lap-shear test
Microelectronic Engineering, 2008This study utilized a high speed lap-shear test to evaluate the mechanical behavior of Sn-37Pb/Cu under bump metallization (UBM) solder joints under high speed loading and hence the drop reliability. The samples were aged for 120h at different temperatures (150^o@?, 180^o@?) and then tested at different displacement rates in the range of 0.01mm/s to ...
Seong-jae Jeon +7 more
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Evaluation of drop reliability of Sn–37Pb solder/Cu joints using a high speed lap-shear test
Microelectronic Engineering, 2012This study provides a framework for evaluating the drop reliability of solder joints using a high-speed lap-shear test. The test specimens employed here were Sn-37Pb/Cu under bump metallization (UBM) solder joints and were aged for 120h at different temperatures (120, 150, and 170^[email protected]?) to examine the effects of aging.
Seong-jae Jeon +6 more
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The International Journal of Advanced Manufacturing Technology, 2012
The greatest obstacles encountered in laser cutting of thick-section ceramics are catastrophic fracture and low cutting speed. Close-piercing lapping (CPL) technique has provided a cutting strategy via suppressing the thermal stress development during cutting to achieve crack-free cutting.
Yinzhou Yan +4 more
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The greatest obstacles encountered in laser cutting of thick-section ceramics are catastrophic fracture and low cutting speed. Close-piercing lapping (CPL) technique has provided a cutting strategy via suppressing the thermal stress development during cutting to achieve crack-free cutting.
Yinzhou Yan +4 more
openaire +1 more source