Electrochemical treatment of metal inserts for subsequent assembly injection molding of tight electronic systems

2018 ◽  
Vol 38 (7) ◽  
pp. 675-684 ◽  
Author(s):  
Tobias Kleffel ◽  
Dietmar Drummer
Keyword(s):  
Injection Molding ◽  
Electronic System ◽  
Electrochemical Treatment ◽  
Electronic Systems ◽  
Automotive Applications ◽  
Two Stage ◽  
Metal Insert

Abstract One method to produce electronic systems with high resilience is the encapsulation of metal inserts, for example, lead frames, using assembly injection molding. Such parts are exposed to different mediums, such as water and oil, which can infiltrate and damage the electronic system, especially in automotive applications. Hence, one challenge is to ensure the tightness. The research covered in this paper focuses on the assembly injection molding of tight electronic systems using microstructured metal inserts, manufactured by a two-stage electrochemical treatment. The effects of the electrochemical treatment on the tightness and the bond between metal and polymer of the electronic system are investigated. Furthermore, the influence of the electrochemical treatment on the surface and geometry of the metal insert is evaluated.

scholarly journals Performance analysis of hydrogen fuel cell with two-stage turbo compressor for automotive applications

2021 ◽  
Vol 7 ◽  
pp. 2635-2646
Author(s):  
Nabeel Ahsan ◽  
Ans Al Rashid ◽  
Asad A. Zaidi ◽  
Ramsha Imran ◽  
Sikandar Abdul Qadir
Keyword(s):  
Fuel Cell ◽  
Performance Analysis ◽  
Hydrogen Fuel Cell ◽  
Automotive Applications ◽  
Hydrogen Fuel ◽  
Two Stage ◽  
Turbo Compressor

On the Thermal Interaction Between an Isothermal Cylinder and Its Isothermal Enclosure for Cylinder Rayleigh Numbers of Order 104

2001 ◽  
Vol 123 (6) ◽  
pp. 1052-1061 ◽  
Author(s):  
D. T. Newport ◽  
T. M. Dalton ◽  
M. R. D. Davies ◽  
M. Whelan ◽  
C. Forno
Keyword(s):  
Nusselt Number ◽  
Electronic System ◽  
Electronic Systems ◽  
Thermal Interaction ◽  
Cubical Enclosure ◽  
System Temperature ◽  
Nusselt Number Distribution ◽  
Complex Fluid ◽  
Digital Moiré ◽  
Rayleigh Numbers

An experimental investigation is made of the thermal interaction between a horizontal isothermal cylinder centrally located in a water-cooled isothermal cubical enclosure. The study is restricted to laminar flow and cylinder Rayleigh numbers of order 104. The application of interest is the cooling of electronic systems. This field is currently lacking in techniques that can measure the complex fluid phenomena encountered in real systems. The paper therefore begins with an experimental review of interferometry to assess its applicability as a potential solution to this need. Based on this review, a real time Digital Moire´ Subtraction interferometer is used to measure temperature profiles, and local Nusselt number distributions in two regions of interest: the plume impingement on the ceiling of the enclosure, and the upper corner region of the enclosure. A Mach-Zehnder interferometer is used for the cylinder Nusselt number distribution. Results are compared both qualitatively and quantitatively with a numerical simulation run on a commercial CFD package widely used for electronic system temperature predictions. The paper gives considerable insight into the nature of the enclosure heat transfer and an indication of the accuracy of a widely used predictive code.

Donohue+: Developing performer-specific electronic improvisatory accompaniment for instrumental improvisation

2021 ◽  
Vol 26 (1) ◽  
pp. 129-139
Author(s):  
Sam Gillies ◽  
Maria Sappho Donohue
Keyword(s):  
Decision Making ◽  
Electronic System ◽  
Instrument Design ◽  
Electronic Systems ◽  
Musical Language ◽  
Live Performance ◽  
Collaborative Process ◽  
Creative Practice ◽  
Free Improvisation ◽  
Music Making

Electronic systems designed to improvise with a live instrumental performer are a constant mediation of musical language and artificial decision-making. Often these systems are designed to elicit a reaction in a very broad way, relying on segmenting and playing back audio material according to a fixed or mobile set of rules or analysis. As a result, such systems can produce an outcome that sounds generic across different improvisers, or restrict meaningful electroacoustic improvisation to those performers with a matching capacity for designing improvisatory electroacoustic processing. This article documents the development of an improvisatory electroacoustic instrument for pianist Maria Donohue as a collaborative process for music-making. The Donohue+ program is a bespoke electroacoustic improvisatory system designed to augment the performance capabilities of Maria, enabling her to achieve new possibilities in live performance. Through the process of development, Maria’s performative style, within the broader context of free improvisation, was analysed and used to design an interactive electronic system. The end result of this process is a meaningful augmentation of the piano in accordance with Maria’s creative practice, differing significantly from other improvising electroacoustic instruments she has previously experimented with. Through the process of development, Donohue+ identifies a practice for instrument design that engages not only with a performer’s musical materials but also with a broader free improvisation aesthetic.

Visualization of particles arrangement during filling stage of polyamide 6 - metal insert injection molding

2019 ◽  
Vol 59 (s2) ◽  
pp. E271-E278 ◽  
Author(s):  
Karol Bula ◽  
Justyna Szymańska ◽  
Tomasz Sterzyński ◽  
Adam Piasecki ◽  
Roman Wróblewski
Keyword(s):  
Injection Molding ◽  
Polyamide 6 ◽  
Metal Insert ◽  
Filling Stage

Effects of Architecture Design on Safety Level of Airborne Electronic Systems

2012 ◽  
Vol 236-237 ◽  
pp. 862-868
Author(s):  
Fang Yan
Keyword(s):  
Development Process ◽  
Electronic System ◽  
Electronic Systems ◽  
System Safety ◽  
Safety Level ◽  
Common Error ◽  
Safety Effect ◽  
Assurance Process ◽  
The Relationship

Safety level is the key input to the development process and assurance process of airborne electronic system, and is influenced by both the safety effect and the architecture used. The paper focuses on the determination of principle how the architectures influence the level assignment. The relationship between system safety objectives and assurance process was discussed; six architectures were studied in aspects of capability of common error limitation, and the concept of independence was introduced to characterize the architectures. The method to assign levels considering architectures influence was proposed using architecture independence concept, and a yaw damper system was studied for assurance level assignment to verify the principal.

scholarly journals Physical and mechanical characterization of PLLA interference screws produced by two stage injection molding method

2016 ◽  
Vol 5 (3-4) ◽  
pp. 183-191 ◽  
Author(s):  
Ali Reza Sadeghi-Avalshahr ◽  
Mohammad Khorsand-Ghayeni ◽  
Samira Nokhasteh ◽  
Amir Mahdi Molavi ◽  
Mohammad Sadeghi-Avalshahr
Keyword(s):  
Injection Molding ◽  
Mechanical Characterization ◽  
Two Stage ◽  
Interference Screws ◽  
Molding Method
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