Advanced packaging and low cost manufacturing techniques for GaAs microwave modules

Abstract The U. S. Navy has a long-standing history of ship design using metals. With the improvements in weapon systems, it is becoming increasingly critical to design ship structures not only to satisfy the structural loading but also to exhibit additional multifunctional properties. This is becoming evident with structures such as the Advanced Enclosed Mast Sensor System, AEM/S, which was installed on the USS Radford. This structure was designed to house radar systems and allow the passage of certain radar frequencies through the structure while simultaneously not allowing the penetration of radar at other frequencies. In addition, the structure was designed to reduce the ship’s detectability. This paper will present a summary of the large-scale composite manufacturing that is being considered for Naval Structures. These structures are being manufactured using low-cost manufacturing techniques and are incorporating multifunctional characteristics in addition to meeting the structural requirement of the application. This paper will provide a historical discussion on the use of composite applications in the surface fleet.

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An Integrated Design and Simulation Environment for Rapid Prototyping of Laminate Robotic Mechanisms

Volume 5B: 42nd Mechanisms and Robotics Conference ◽

10.1115/detc2018-86359 ◽

2018 ◽

Cited By ~ 1

Author(s):

Mohammad Sharifzadeh ◽

Roozbeh Khodambashi ◽

Daniel M. Aukes

Keyword(s):

Design Space ◽

Low Cost ◽

Integrated Design ◽

Design Tool ◽

Simulation Environment ◽

Laminate Design ◽

Manufacturing Techniques ◽

To Come ◽

Low Cost Manufacturing ◽

Model Based Analysis

Laminate mechanisms are a reliable concept in producing low-cost robots for educational and commercial purposes. These mechanisms are produced using low-cost manufacturing techniques which have improved significantly during recent years and are more accessible to novices and hobbyists. However, iterating through the design space to come up with the best design for a robot is still a time consuming and rather expensive task and therefore, there is still a need for model-based analysis before manufacturing. Until now, there has been no integrated design and analysis software for laminate robots. This paper addresses some of the issues surrounding laminate analysis by introducing a companion to an existing laminate design tool that automates the generation of dynamic equations and produces simulation results via rendered plots and videos. We have validated the accuracy of the software by comparing the position, velocity and acceleration of the simulated mechanisms with the measurements taken from physical laminate prototypes using a motion capture system.

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Concept and Design of a Multistable Plate Structure

Journal of Mechanical Design ◽

10.1115/1.4004459 ◽

2011 ◽

Vol 133 (8) ◽

Cited By ~ 14

Author(s):

Matthew Santer ◽

Sergio Pellegrino

Keyword(s):

Injection Molding ◽

Low Cost ◽

Functional Model ◽

Plate Structure ◽

Manufacturing Techniques ◽

Novel Concept ◽

Key Steps ◽

Low Cost Manufacturing

A concept is presented for a compliant plate structure that deforms elastically into a variety of cylindrical shapes and is able to maintain such shapes due to the presence of bistable components within the structure. The whole structure may be fabricated as a monolithic entity using low-cost manufacturing techniques such as injection molding. The key steps in the analysis of this novel concept are presented, and a functional model is designed and constructed to demonstrate the concept and validate the analysis.

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A Regenerative Business Model with Flexible, Modular and Scalable Processes in A Post-Covid Era: The Case of The Spinning Mesh Disc Reactor (SMDR)

Sustainability ◽

10.3390/su13126944 ◽

2021 ◽

Vol 13 (12) ◽

pp. 6944

Author(s):

Emma Anna Carolina Emanuelsson ◽

Aurelie Charles ◽

Parimala Shivaprasad

Keyword(s):

Business Model ◽

Low Cost ◽

Sustainable Manufacturing ◽

Sustainable Business ◽

Capital Costs ◽

Implementing Change ◽

Chemical Manufacturing ◽

Manufacturing Techniques ◽

Flexible Operation

With stringent environmental regulations and a new drive for sustainable manufacturing, there is an unprecedented opportunity to incorporate novel manufacturing techniques. Recent political and pandemic events have shown the vulnerability to supply chains, highlighting the need for localised manufacturing capabilities to better respond flexibly to national demand. In this paper, we have used the spinning mesh disc reactor (SMDR) as a case study to demonstrate the path forward for manufacturing in the post-Covid world. The SMDR uses centrifugal force to allow the spread of thin film across the spinning disc which has a cloth with immobilised catalyst. The modularity of the design combined with the flexibility to perform a range of chemical reactions in a single equipment is an opportunity towards sustainable manufacturing. A global approach to market research allowed us to identify sectors within the chemical industry interested in novel reactor designs. The drivers for implementing change were identified as low capital cost, flexible operation and consistent product quality. Barriers include cost of change (regulatory and capital costs), limited technical awareness, safety concerns and lack of motivation towards change. Finally, applying the key features of a Sustainable Business Model (SBM) to SMDR, we show the strengths and opportunities for SMDR to align with an SBM allowing for a low-cost, sustainable and regenerative system of chemical manufacturing.

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Low-cost approaches to UAV design using advanced manufacturing techniques

2013 IEEE Integrated STEM Education Conference (ISEC) ◽

10.1109/isecon.2013.6525199 ◽

2013 ◽

Cited By ~ 8

Author(s):

Eric P. Flynn

Keyword(s):

Low Cost ◽

Advanced Manufacturing ◽

Manufacturing Techniques

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Micromolding Fabrication of Biocompatible Dry Micro-Pyramid Array Electrodes for Wearable Biopotential Monitoring

Flexible and Printed Electronics ◽

10.1088/2058-8585/ac3561 ◽

2021 ◽

Author(s):

Marco Vinicio Alban ◽

Haechang Lee ◽

Hanul Moon ◽

Seunghyup Yoo

Keyword(s):

Large Scale ◽

Low Cost ◽

Skin Irritation ◽

Electrode Impedance ◽

Non Invasive ◽

Solution Processes ◽

Dry Electrodes ◽

Array Electrode ◽

Low Cost Manufacturing ◽

Electromyography Signals

Abstract Thin dry electrodes are promising components in wearable healthcare devices. Assessing the condition of the human body by monitoring biopotentials facilitates the early diagnosis of diseases as well as their prevention, treatment, and therapy. Existing clinical-use electrodes have limited wearable-device usage because they use gels, require preparation steps, and are uncomfortable to wear. While dry electrodes can improve these issues and have demonstrated performance on par with gel-based electrodes, providing advantages in mobile and wearable applications; the materials and fabrication methods used are not yet at the level of disposable gel electrodes for low-cost mass manufacturing and wide adoption. Here, a low-cost manufacturing process for thin dry electrodes with a conductive micro-pyramidal array is presented for large-scale on-skin wearable applications. The electrode is fabricated using micromolding techniques in conjunction with solution processes in order to guarantee ease of fabrication, high device yield, and the possibility of mass production compatible with current semiconductor production processes. Fabricated using a conductive paste and an epoxy resin that are both biocompatible, the developed micro-pyramidal array electrode operates in a conformal, non-invasive manner, with low skin irritation, which ensures improved comfort for brief or extended use. The operation of the developed electrode was examined by analyzing electrode-skin-electrode impedance, electroencephalography, electrocardiography, and electromyography signals and comparing them with those measured simultaneously using gel electrodes.

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Low Cost Manufacturing Process of Y-Channel Active Microfluidic Mixing Device Using 3D Printing Machine

10.1115/1.0004872v ◽

2021 ◽

Author(s):

Mohammad Salman Parvez ◽

Md. Fazlay Rubby ◽

Shanzida Kabir ◽

Nazmul Islam

Keyword(s):

3D Printing ◽

Manufacturing Process ◽

Low Cost ◽

Microfluidic Mixing ◽

Low Cost Manufacturing ◽

Printing Machine

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SYNTHESIS AND CHARACTERISATION OF WOVENROVING GLASS MAT FOR EPOXYCOMPOSITES

Journal of Manufacturing Engineering ◽

10.37255/jme.v15i4pp93-100 ◽

2020 ◽

Vol 15 (4) ◽

Author(s):

Mahesh Mallampati ◽

Sreekanth Mandalapu ◽

Govidarajulu C

Keyword(s):

Tensile Strength ◽

Glass Fiber ◽

Low Cost ◽

Weight Ratio ◽

High Strength ◽

Hardness Test ◽

Industrial Applications ◽

Sem Analysis ◽

Low Thermal Expansion ◽

Manufacturing Techniques

The composite materials are replacing the traditional materials because oftheir superior properties such as high tensile strength, low thermal expansion, high strength to weight ratio, low cost, lightweight, high specific modulus, renewability and biodegradability which are the most basic & common attractive features of composites that make them useful for industrial applications. The developments of new materials are on the anvil and are growing day by day. The efforts to produce economically attractive composite components have resulted in several innovative manufacturing techniques currently being used in the composites industry. Generally, composites consist of mainly two phases i.e., matrix and fiber. In this study, woven roving mats (E-glass fiber orientation (-45°/45°,0°/90°, - 45°/45°),UD450GSM)were cut in measured dimensions and a mixture of Epoxy Resin (EPOFINE-556, Density-1.15gm/cm3), Hardener (FINE HARDTM 951, Density- 0.94 gm/cm3) and Acetone [(CH3)2CO, M= 38.08 g/mol] was used to manufacture the glass fiber reinforced epoxy composite by hand lay-up method. Mechanical properties such as tensile strength, SEM analysis, hardness test, density tests are evaluated.

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