In-Situ Thermal Chamber 3D X-Ray Computed Tomography for Non-Destructive Detection of Submicron Via-Crack in Printed Circuit Boards

2020 ◽  
Author(s):  
Daechul Choi ◽  
Sooyoung Ji ◽  
Jaelim Choi ◽  
Miyang Kim ◽  
Eunju Yang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Printed Circuit Boards ◽  
Fault Isolation ◽  
Circuit Boards ◽  
X Ray ◽  
Printed Circuit ◽  
Thermal Chamber ◽  
X Ray Computed ◽  
Non Destructive

Abstract In this paper, we demonstrate a case for non-destructive detection of submicron wide via-crack in printed circuit boards (PCBs) by using in-situ thermal chamber 3D x-ray computed tomography. The defect location is verified by a PFA (Physical Failure Analysis), and good agreement was made. This fault isolation method is proposed as a possible solution for identifying submicron cracks in PCB substrates during challenging investigations.

Non-Destructive PCB Reverse Engineering Using X-Ray Micro Computed Tomography

2015 ◽  
Author(s):  
Navid Asadizanjani ◽  
Sina Shahbazmohamadi ◽  
Mark Tehranipoor ◽  
Domenic Forte
Keyword(s):  
Reverse Engineering ◽  
Printed Circuit Boards ◽  
Advanced Characterization ◽  
Fault Isolation ◽  
Lessons Learned ◽  
Circuit Boards ◽  
Micro Computed Tomography ◽  
X Ray ◽  
Printed Circuit ◽  
Non Destructive

Abstract Reverse engineering of electronics systems is performed for various reasons ranging from honest ones such as failure analysis, fault isolation, trustworthiness verification, obsolescence management, etc. to dishonest ones such as cloning, counterfeiting, identification of vulnerabilities, development of attacks, etc. Regardless of the goal, it is imperative that the research community understands the requirements, complexities, and limitations of reverse engineering. Until recently, the reverse engineering was considered as destructive, time consuming, and prohibitively expensive, thereby restricting its application to a few remote cases. However, the advents of advanced characterization and imaging tools and software have counteracted this point of view. In this paper, we show how X-ray micro-tomography imaging can be combined with advanced 3D image processing and analysis to facilitate the automation of reverse engineering, and thereby lowering the associated time and cost. In this paper, we demonstrate our proposed process on two different printed circuit boards (PCBs). The first PCB is a four-layer custom designed board while the latter is a more complex commercial system. Lessons learned from this effort can be used to both develop advanced countermeasures and establish a more efficient workflow for instances where reverse engineering is deemed necessary. Keywords: Printed circuit boards, non-destructive imaging, X-ray tomography, reverse engineering.

scholarly journals Non-destructive 3D geometric modeling of maize root-stubble in-situ via X-ray computed tomography

2020 ◽  
Vol 13 (3) ◽  
pp. 174-179
Author(s):  
Xu Zhao ◽  
◽  
Luyu Xing ◽  
Shifan Shen ◽  
Jiaming Liu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Geometric Modeling ◽  
Maize Root ◽  
X Ray ◽  
X Ray Computed ◽  
Non Destructive

scholarly journals X-Ray Computed Tomography In Situ: An Opportunity for Museums and Restoration Laboratories

Heritage ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 2028-2038 ◽  
Author(s):  
Fauzia Albertin ◽  
Matteo Bettuzzi ◽  
Rosa Brancaccio ◽  
Maria Pia Morigi ◽  
Franco Casali
Keyword(s):  
Computed Tomography ◽  
Medium Size ◽  
Complex Objects ◽  
X Ray ◽  
Ct Analysis ◽  
X Ray Computed ◽  
The University ◽  
Non Destructive ◽  
Important Measurement

X-ray Computed Tomography (X-ray CT) is a sophisticated non-destructive imaging technique to investigate structures and materials of complex objects, and its application can answer many conservation and restoration questions. However, for Cultural Heritage investigations, medical CT scanners are not optimized for many case-studies: These instruments are designed for the human body, are not flexible and are difficult to use in situ. To overcome these limitations and to safely investigate works of art on site—in a restoration laboratory or in a museum—the X-ray Tomography Laboratory of the University of Bologna designed several CT systems. Here we present two of these facilities and the results of important measurement campaigns performed in situ. The first instrument, light and flexible, is designed to investigate medium-size objects with a resolution of a few tens of microns and was used for the CT analysis of several Japanese theater masks belonging to the collection of the “L. Pigorini” Museum (Rome). The second is designed to analyze larger objects, up to 200 cm and was used to investigate the collection of the so-called “Statue Vestite” (devotional dressed statues) of the Diocesan Museum of Massa.

scholarly journals Non-destructive characterization of additively manufactured components with x-ray computed tomography for part qualification: A study with laboratory and synchrotron x-rays

2021 ◽  
Vol 173 ◽  
pp. 110894
Author(s):  
Ercan Cakmak ◽  
Philip Bingham ◽  
Ross W. Cunningham ◽  
Anthony D. Rollett ◽  
Xianghui Xiao ◽  
...  
Keyword(s):  
Computed Tomography ◽  
X Rays ◽  
X Ray ◽  
X Ray Computed ◽  
Non Destructive ◽  
Non Destructive Characterization
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