scholarly journals Nondestructive Damage Evaluation of Electro-Mechanical Components Using a Hybrid, Computational and Experimental Approach

1999 ◽  
Vol 591 ◽  
Author(s):  
C. Furlong ◽  
R. J. Pryputniewicz

ABSTRACTWith the electronic industry being one of the most dynamic, in terms of new technologies, electronic packages have to be designed and optimized for new and ever more demanding applications in relatively short periods of time. This, in turn, indicates a need for effective quantitative testing methodologies. In this paper, a novel hybridized use of nondestructive, noninvasive, remote, full field of view, quantitative opto-electronic holography techniques with computational modeling is presented. The hybridization is illustrated with a representative application, which shows that the combined use of opto-electronic holography techniques and computational modeling provides an effective engineering tool for nondestructive study of electro-mechanical components.

Author(s):  
Cosme Furlong ◽  
Ryszard J. Pryputniewicz

With the microelectronics industry being one of the most dynamic, in terms of new technologies, electronic packages have to be designed and optimized for new and ever more demanding applications in relatively short periods of time. In addition, for certain applications, the nondestructive testing (NDT) of electronic packages may be needed, especially for applications requiring noninvasive, full-field-of-view, real-time testing the behavior of a specific package subjected to actual operating conditions. This type of NDT can be accomplished by application of optical techniques and, in particular, speckle phase correlation techniques in the form of optoelectronic holography (OEH). In this paper, advanced OEH techniques are described and representative applications of OEH for the effective characterization of microelectronic components and packages are presented.


Author(s):  
Andrew J. Komrowski ◽  
Luis A. Curiel ◽  
Daniel J. D. Sullivan ◽  
Quang Nguyen ◽  
Lisa Logan-Willams

Abstract The acquisition of reliable Acoustic Micro Images (AMI) are an essential non-destructive step in the Failure Analysis (FA) of electronic packages. Advanced packaging and new IC materials present challenges to the collection of reliable AMI signals. The AMI is complicated due to new technologies that utilize an increasing number of interfaces in ICs and packages. We present two case studies in which it is necessary to decipher the acoustic echoes from the signals generated by the interface of interest in order to acquire trustworthy information about the IC package.


Computers ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 19 ◽  
Author(s):  
Nazita Taghavi ◽  
Greg R. Luecke ◽  
Nicholas D. Jeffery

Development of an advanced electromechanical system requires a blend of technical expertise and knowledge, from electrical and mechanical engineering to software and system engineering. Engineers working in this field must be able to understand and analyze the interrelated electrical and mechanical components, as well as computer controlling programs, to communicate with each system part. In this paper, we aim to review the requirements and technical knowledge for development of these new technologies.


2016 ◽  
Vol 48 (3) ◽  
pp. 656-672 ◽  
Author(s):  
Giovanni Ravazzani ◽  
Chiara Corbari ◽  
Alessandro Ceppi ◽  
Mouna Feki ◽  
Marco Mancini ◽  
...  

Increased water demand and climate change impacts have recently enhanced the need to improve water resources management, even in those areas which traditionally have an abundant supply of water, such as the Po Valley in northern Italy. The highest consumption of water is devoted to irrigation for agricultural production, and so it is in this area that efforts have to be focused to study possible interventions. Meeting and optimizing the consumption of water for irrigation also means making more resources available for drinking water and industrial use, and maintaining an optimal state of the environment. In this study we show the effectiveness of the combined use of numerical weather predictions and hydrological modelling to forecast soil moisture and crop water requirement in order to optimize irrigation scheduling. This system combines state of the art mathematical models and new technologies for environmental monitoring, merging ground observed data with Earth observations from space and unconventional information from the cyberspace through crowdsourcing.


Author(s):  
Ольга Александровна Ярцева

На протяжении своей карьеры Раушенберг занимался живописью, скульптурой, сценографией, представлял собой тип художника не ХХ, но XXI века. Его интересовали новые технологии, стремительно менявшийся мир вокруг: политически, социально, ментально. В период становления своего стиля Раушенберг находился в поисках ответа на вопрос о природе искусства, ему был близок экспериментальный подход, вдохновленный опытами европейского искусства начала прошлого столетия. Раушенберг использовал его при создании большого проекта, который получил название «комбинированная живопись» или «комбайны» (1953–1964). Именно он открыл дорогу американскому художнику к мировой известности и признанию. Throughout his career, Rauschenberg was engaged in painting, sculpture, scenography, he was a type of artist, not XX, but the XXI century. He was interested in new technologies, the rapidly changing world around: politically, socially, mentally. In the period when his style was formed Rauschenberg searched of an answer to the question about the nature of art, he was close to the experimental approach inspired by the experiences of European art of the beginning of the last century. Rauschenberg used it to create a large project, which was called "combined painting" or "combines" (1953 – 1964). It opened the way for an American artist to world fame and recognition.


2020 ◽  
Vol 93 (4) ◽  
pp. 683-703
Author(s):  
J. L. Valentín ◽  
R. Pérez-Aparicio ◽  
A. Fernandez-Torres ◽  
P. Posadas ◽  
R. Herrero ◽  
...  

ABSTRACT There are currently many well-established applications for recycled rubber from end-of-life tires (ELT), but it is essential to investigate and seek new approaches to enhance the value of these products. Recent developments in new technologies and innovative recycling and devulcanization processes have opened up new perspectives for ELT crumb rubber. To promote the use of these products in newly added value applications, it is essential to develop and optimize methods that allow the characterization of parameters related to the ultimate properties of potential final applications. In this respect, a novel characterization methodology based on advanced 1H double-quantum (DQ) nuclear magnetic resonance experiments has been applied for the first time to quantify the key parameters that characterize the structure of ELT crumb rubber after diverse recycling processes: from simple mechanical grinding to complex devulcanization methods. This experimental approach enables the quantification of parameters that define the network structure of rubber, such as the nonelastic network defects (sol fraction, dangling chain ends, loops), the cross-link density, and the heterogeneity of the network, directly from rubber granulate and powder (without any additional sample preparation steps), overcoming most of the drawbacks and uncertainties that limit the application of traditional rubber characterization methods (e.g., equilibrium swelling experiments). By applying this experimental approach, it is possible to identify and quantify the actual technical limits for a complete selective devulcanization process of ELT crumb rubber.


2001 ◽  
Author(s):  
Cosme Furlong ◽  
Ryszard J. Pryputniewicz

Abstract Rapid advances in microelectronics require design and optimization of components and packages, for new and ever more demanding applications, in relatively short periods of time while satisfying electrical, thermal, and mechanical specifications, as well as cost and manufacturability expectations. In addition, reliability and durability have to be taken into consideration. As a consequence, some of the most sophisticated analytical, computational, and experimental methods are being used for development, optimization, and quantitative characterization of electronic packages. In this paper, a novel experimental-computational method, based on combined use of recent advances in laser-based optics and computational modeling, is described and its application is demonstrated by case studies of microelectronic components subjected to electro-thermo-mechanical loads. Results of these studies show that this methodology provides an effective engineering tool for nondestructive testing (NDT) applications in electronic packaging and provides indispensable quantitative data for development, optimization, and applications in electronic packaging.


Author(s):  
Christian Glahn

The digital transformation has reached higher education and many faculty members find teaching in the digital environment hard. A key question for educational institutions is whether the uptake of blended learning within their digitization strategies matches the pace of technological innovation. This chapter discusses a model for monitoring the progress of educational digitization that has been in use throughout four years at HTW Chur, Switzerland. The model connects technologies to practices rather than abstracting technologies from them. This helps identifying performance indicators in campus-wide information systems for understanding the diffusion of technology uses among the faculty, and it helps categorizing new technologies towards their organizational innovation potential. The combined use of these performance indicators with the model supports tailoring faculty development activities for digitization strategies that are based on the actual development needs within the institution.


Author(s):  
Christian Glahn

The digital transformation has reached higher education and many faculty members find teaching in the digital environment hard. A key question for educational institutions is whether the uptake of blended learning within their digitization strategies matches the pace of technological innovation. This chapter discusses a model for monitoring the progress of educational digitization that has been in use throughout four years at HTW Chur, Switzerland. The model connects technologies to practices rather than abstracting technologies from them. This helps identifying performance indicators in campus-wide information systems for understanding the diffusion of technology uses among the faculty, and it helps categorizing new technologies towards their organizational innovation potential. The combined use of these performance indicators with the model supports tailoring faculty development activities for digitization strategies that are based on the actual development needs within the institution.


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