NDLI: Research on Fractal Mechanism of the Crushed Particle of Waste Printed Circuit Board

Content Provider	IEEE Xplore Digital Library
Author	Duan Chen-long Zhao Yue-min He Ya-qun He Jing-feng Wang Shuai
Copyright Year	2010
Abstract	Waste printed circuit board (PCB) is the most important part of Waste electronic and electric equipment (WEEE), and also one of the most arduous job to deal with because of its heterogeneity and high complexity. Crushing is the crucial process for the technology of recycling waste PCB, for chemical and bio-metallurgy methods, the process of crushing could have enough chance to make the surface of particles contacting with medicaments, again for physical methods, the process of crushing could directly cause the efficiency of successive separation, the recovery rate and purity of metal. In order to study the rupture mechanism of waste printed circuit boards (PCB), an S-3000N scanning electron microscope (SEM) and electron spectroscopy (EDS) were adopted to analyzed boundary of PCB particles. The surface topography of PCB particles manifests self- similarity, which shows particle possesses fractal characteristics. Based on the fractal theory and computer images analysis technique, a MATLAB program which computes box fractal dimension of material fracture was designed. The linear degree of fit beeline of MATLAB program is high, which shows fractal behavior of the boundary of PCB particle is obvious. The different fractal dimension of 6 particles shows that complexity and roughness of fracture were different. The order of complexity and roughness of particle boundary from high to low is: d>c>a>f>e>b, and these accords with the visual observing, which further shows that the crushed PCB particle boundary possesses fractal characteristics.
Starting Page	1
Ending Page	4
File Size	1817396
Page Count	4
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5516753
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scanning electron microscopy Printed circuits Electronic waste Fractals Surface topography Recycling Chemical processes MATLAB Chemical technology Biomedical imaging
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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