Open HW, open design SW, and the VC ecosystem dilemma

2005 ◽  
Author(s):  
J.-A. Carballo
Keyword(s):  
Open Design

In-Situ Mechanical Sample Preparation of Selected Sites and Components on Large Modules and Boards

2016 ◽  
Author(s):  
Jim Colvin ◽  
Timothy Hazeldine ◽  
Heenal Patel
Keyword(s):  
Sample Preparation ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Tilt Table ◽  
Standard Requirement ◽  
Open Design ◽  
Bga Packages ◽  
Silicon Thickness ◽  
Board Level

Abstract The standard requirement for FA Engineers needing to remove components from a board, prior to decapsulation or sample preparation, is shown to be greatly reduced, by the methods discussed here. By using a mechanical selected area preparation system with an open-design it is possible to reach all required areas of a large printed circuit board (PCB) or module to prepare a single component ‘in situ’. This makes subsequent optical or electrical testing faster and often more convenient to accomplish. Electronic End-pointing and 3D curvature compensation methods can often be used in parallel with sample prep techniques to further improve the consistency and efficacy of the decapsulation and thinning uniformity and final remaining silicon thickness (RST). Board level prep eliminates the worry of rework removal of BGA packages and the subsequent risk of damage to the device. Since the entire board is mounted, the contamination is restricted to the die surface and can be kept from the underside ball connections unlike current liquid immersion methods of package thinning or delayering. Since the camera is in line with the abrasion interface, imaging is real time during the entire milling and thinning process. Recent advances in automated tilt-table design have meant that a specific component’s angular orientation can be optimized for sample preparation. Improved tilt table technology also allows for improved mounting capability for boards of many types and sizes. The paper describes methods for decapsulation, thinning and backside polishing of a part ‘in situ’ on the polishing machine and allows the system to operate as a probe station for monitoring electrical characteristics while thinning. Considerations for designing board-level workholders are described – for boards that that are populated with components on one or even both sides. Using the techniques described, the quality of sample preparation and control is on a par with the processing of single package-level devices.

PRODUCT DEVELOPMENT IN OPEN DESIGN COMMUNITIES: A PROCESS PERSPECTIVE

2011 ◽  
Vol 08 (04) ◽  
pp. 557-575 ◽  
Author(s):  
CHRISTINA RAASCH
Keyword(s):  
Product Development ◽  
Open Source ◽  
Low Cost ◽  
Industrial Practice ◽  
Open Design ◽  
Open Development ◽  
Development Processes ◽  
Design Projects ◽  
Process Perspective ◽  
Significant Attention

Open source (OS) has raised significant attention in industrial practice and in scholarly research as a new and successful mode of product development. This paper is among the first to study open source development processes outside their original context, the software industry. In particular, we investigate the development of tangible products in so-called open design projects. We study how open design projects address the challenges usually put forward in the literature as barriers to the open development of tangible products. The analysis rests on the comparative qualitative investigation of four cases from different industries. We find that, subject to certain contingencies, open design processes can be organized to resemble OSS development processes to a considerable degree. Some practices are established specifically to uphold OS principles in the open design context, while others starkly differ from those found in OSS development. Our discussion focusses on different aspects of modularity as well as the availability of low-cost tools.

EXTERNAL PARTICLE SHAPE ANALYSIS AND ITS EFFECT ON TRIBOLOGICAL PERFORMANCE OF DISC BRAKE

2016 ◽  
Vol 78 (9) ◽  
Author(s):  
Ahmad Fawwaz Abdul Aziz ◽  
Mohd Kameil Abdul Hamid
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Particle Shape ◽  
Silica Sand ◽  
Variable Load ◽  
Shape Effect ◽  
Disc Brake ◽  
External Particle ◽  
The Road ◽  
Open Design

The open design of disc brake and its location close to the road surface may lead the road particles of various sizes and shapes to enter in between brake pads and disc rotor. This study presents an experimental approach to determine the particle shape effect on friction and wear characteristics of OEM disc brake under different operating condition. Two types of external particles which are road particles and silica sand with two range of size of 200 µm and 400 µm were used. Testing was conducted for variable load and sliding speed. Presence of external particle with various size and shape affect the wear rate, friction coefficient and surface topography of the brake pad. Smaller particle generated more wear. Moreover, the particles which have sharped shape or high angularity resulted in higher weight loss of the pad and contribute to greater formation of compacted wear debris. Wear rate and friction coefficient also increase with contact pressure.   

Open Design Architecture for Round Trip Engineering

2010 ◽  
pp. 281-293
Author(s):  
Miroslav Beličák ◽  
Jaroslav Pokorný ◽  
Karel Richta
Keyword(s):  
Round Trip ◽  
Open Design

scholarly journals Sustainable Design Futures: An open design vision for the circular economy in fashion and textiles

2017 ◽  
Vol 20 (sup1) ◽  
pp. S1938-S1947 ◽  
Author(s):  
Paul Smith ◽  
Jen Baille ◽  
Lynn-Sayers McHattie
Keyword(s):  
Circular Economy ◽  
Sustainable Design ◽  
Open Design

scholarly journals THERMODYNAMIC ANALYSIS OF WIND CATCHER WITH COOLING PADS USING SSG REYNOLDS STRESS TURBULENCE MODEL.

2021 ◽  
Author(s):  
Agarwal A ◽  
◽  
Pitso I ◽  
Letsatsi M.T ◽  
◽  
...  
Keyword(s):  
Reynolds Stress ◽  
Turbulence Model ◽  
Energy Requirement ◽  
Renewable Energy Sources ◽  
Thermal Conditions ◽  
Energy Sources ◽  
Cfd Analysis ◽  
Open Design ◽  
Air Inlet ◽  
Environment Sustainability

With increase in energy requirement, the researchers are looking for energy efficient passive ventilation techniques. The current design concept is based on environment sustainability and use of renewable energy sources is preferred over conventional energy sources. The current research investigates the wind catcher design with cooling pads using techniques of Computational Fluid Dynamics. The CAD model of wind catcher is designed using Creo design software and CFD analysis is conducted using ANSYS CFX software. The CFD analysis is directed at different air inlet velocities and SSG Reynolds stress turbulence model under steady state thermal conditions for both side open design and singe side open designs. The cooling pads have successfully reduced temperature up to 1.65 degrees for single side opening and 2.86 degrees for double side opening design. Maximum air flow rate is achieved with higher air inlet velocities for both design types.

scholarly journals RESUMO DE TESE - OPEN DESIGN NA PROMOÇÃO DE ECONOMIAS DISTRIBUÍDAS: HEURÍSTICAS PARA O DESENVOLVIMENTO DE VESTUÁRIO

2019 ◽  
Vol 5 (1) ◽  
pp. 139-139
Author(s):  
Iana Uliana Perez ◽  
Aguinaldo Dos Santos
Keyword(s):  
Design Research ◽  
Action Design Research ◽  
Open Design

A presente dissertação de mestrado foi realizada junto ao Núcleo de Design & Sustentabilidade, grupo de pesquisa do Programa de Pós-Graduação em Design da Universidade Federal do Paraná. Seu objetivo é identificar e sistematizar heurísticas para aplicação dos princípios do open design ao desenvolvimento de vestuário mais sustentável, com utilização predominante de tecnologias de fabricação digital. Após a aplicação do método Action Design Research, o qual envolveu ciclos iterativos de desenvolvimento e avaliação de artefatos, foram sistematizadas oito heurísticas associadas ao desenvolvimento de vestuário, as quais foram generalizadas para três classes de problemas: incentivo à personalização, facilidade de montagem e sustentabilidade.   

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