Number：

01095004

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Name：

曾憲中

Titles：

Professor

Author：

S.P.Ke-Wang , W.P. Ma , S.C. Tzeng , K.C. Chang

Paper name：

Thermal Behaviors and Lubrication Properties in Rotary Blade
Coupling of Sports Utility Vehicles

Name of activity：

JSME International Journal

Keywords： flexible printed circuit (FPC), Power Image Analysis System (PIA), blanking technology

Abstract：

This study investigates the quality management and reliability of flexible printed circuit (FPC) after blanking machining. A 300X microscope is applied to observe the micro organization and structures of the blanking interfaces. The test section of FPC includes circuit assembled by adhensive agent and by sputtering. The former included single-faced double board and double-faced double board. As the FPC was processed for blanking, four parts were formed by shear stress on the shear surface, which were roll-over depth, smooth-sheared surface, fracture surface, and burr height. For various mold gaps, board thickness, and material extension, the results of the above mentioned factors showed remarkable difference. The experimental results showed that for single-faced FPC, the copper toil was not fixed at both faces, the overall thickness is thinner and the FPC is more flexiblem, the 0.02mm mold gap case was better. But for double-faced FPCB, the overall thickness is thicker, and the resulting shear stress is also larger, the 0.03mm mold gap case was appropriate. To understand the relationship between the blanking quality and parameters, one uses Power Image Analysis System (PIA) to capture and analyze the image of the FPC after blanking and shearing and discussed the blanking quality for different mold gap and circuit board thickness, so as to establish an advanced FPC blanking technology and produce more precise products.

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