Analysis of Fractures of Printed Circuit Board Traces

2012 ◽  
Author(s):  
Carl Nail ◽  
Larry Rice
Keyword(s):  
Crack Initiation ◽  
Fatigue Failure ◽  
Visual Inspection ◽  
Printed Circuit Board ◽  
Fracture Analysis ◽  
Circuit Board ◽  
Printed Circuit ◽  
Solder Mask ◽  
Cracking Mechanism

Abstract A PCB trace was repeatedly cracking in the same location. Visual inspection showed cracking there and at structurally similar locations, with solder mask missing from one side of the trace of interest. Fracture analysis suggested that these issues and etch pitting caused crack initiation, followed by fatigue failure that ultimately led to full fracture. A FIB section of a second failure reinforced the finding that the fundamental cracking mechanism was fatigue.

scholarly journals Implementasi Adaptive Neural Fuzzy Inference System (ANFIS) Untuk Menguji Kualitas Printed Circuit Board (PCB)

2021 ◽  
Vol 5 (2) ◽  
pp. 79-90
Author(s):  
Tatang Rohana Cucu
Keyword(s):  
Visual Inspection ◽  
Printed Circuit Board ◽  
Fuzzy Inference ◽  
Circuit Board ◽  
Inspection System ◽  
Automated Visual Inspection ◽  
Inference System ◽  
Printed Circuit ◽  
Bahasa Indonesia ◽  
Neural Fuzzy

Pengujian kualitas menggunakan teknik pengolahan citra dan kecerdasan tiruan banyak diterapkan dalam berbagai industri, misalnya industri tekstil, perakitan kendaraan, makanan, minuman, perakitan elektronik, dan lain – lain. Pengujian model ini sering disebut dengan istilah Automated Visual Inspection System (AVIS) atau dalam bahasa Indonesia Sistem Inspeksi Visual Otomatis (SIVO). Penelitian ini mengacu pada model sistem inspeksi, di mana objek pengujiannya adalah keping Printed Circuit Board (PCB). Banyak penelitian tentang pengujian PCB yang sudah dilakukan, tetapi masih banyak yang belum memberikan hasil yang optimum, diantaranya waktu akses yang masih lambat, keakuratan data masih rendah, dan tingkat kesalahan yang masih tinggi. Berdasarkan hasil penelitian dan pengujian yang sudah dilakukan, model ANFIS sangat layak dijadikan sebagai model inferensi kecerdasan buatan dalam sistem yang berbasis inspeksi otomatis khususnya menguji kualitas keping PCB, karena terbukti model ANFIS dengan model hybrid trapesium mf memiliki tingkat kesalahan yang sangat kecil yaitu 4.0186e-007 dan untuk tingkat akurasi pengujian datanya mencapai 99%. 

scholarly journals Biocompatibility Study of a Commercial Printed Circuit Board for Biomedical Applications: Lab-on-PCB for Organotypic Retina Cultures

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1469
Author(s):  
Jesús David Urbano-Gámez ◽  
Lourdes Valdés-Sánchez ◽  
Carmen Aracil ◽  
Berta de la Cerda ◽  
Francisco Perdigones ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Microelectrode Arrays ◽  
Circuit Board ◽  
Printed Circuit ◽  
Retinal Explants ◽  
Closed Systems ◽  
Solder Mask ◽  
Biocompatibility Study

Printed circuit board (PCB) technology is well known, reliable, and low-cost, and its application to biomedicine, which implies the integration of microfluidics and electronics, has led to Lab-on-PCB. However, the biocompatibility of the involved materials has to be examined if they are in contact with biological elements. In this paper, the solder mask (PSR-2000 CD02G/CA-25 CD01, Taiyo Ink (Suzhou) Co., Ltd., Suzhou, China) of a commercial PCB has been studied for retinal cultures. For this purpose, retinal explants have been cultured over this substrate, both on open and closed systems, with successful results. Cell viability data shows that the solder mask has no cytotoxic effect on the culture allowing the application of PCB as the substrate of customized microelectrode arrays (MEAs). Finally, a comparative study of the biocompatibility of the 3D printer Uniz zSG amber resin has also been carried out.

Investigation of moisture uptake into printed circuit board laminate and solder mask materials

2017 ◽  
Vol 28 (8) ◽  
pp. 6138-6151 ◽  
Author(s):  
Hélène Conseil-Gudla ◽  
Visweswara C. Gudla ◽  
Shruti Borgaonkar ◽  
Morten S. Jellesen ◽  
Rajan Ambat
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Moisture Uptake ◽  
Printed Circuit ◽  
Solder Mask
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