Assembly Design Concepts and Methods of Tailoring of CNT Orientation and Dispertion for Damping/Dynamic Properties of Nanoparticle-Reinforced Multifunctional Materials

2005 ◽  
Vol 901 ◽  
Author(s):  
Maksim Kireitseu ◽  
G.R. Tomlinson ◽  
R.A. Williams
Keyword(s):  
Dynamic Properties ◽  
Vibration Damping ◽  
Syntactic Foams ◽  
Multifunctional Materials ◽  
Next Generation ◽  
Design Concepts ◽  
Assembly Design ◽  
Road Map ◽  
Fan Blade ◽  
Damping Systems

AbstractIn this paper, the concepts of nanotechnology-based fan blade have been introduced and CNT-reinforced hollow micro-balloon-based syntactic foams/composites and damping coatings have been applied so as to develop the next generation aerospace components. The focus in this paper is directed toward the development of the next generation of vibration damping systems, providing a road map to manufacturing technology and design solutions.

Damping Properties/Dynamics of Nanoparticle-Reinforced Material

2006 ◽  
Author(s):  
M. V. Kireitseu
Keyword(s):  
Composite Materials ◽  
Vibration Damping ◽  
Damping Properties ◽  
Next Generation ◽  
Engineering Applications ◽  
Operational Conditions ◽  
Design Concepts ◽  
Nanostructured Composite ◽  
Road Map ◽  
Damping Systems

Nanoparticle-based vibration damping shows the effect that molecule-level mechanism can have on the damping and that nanostructured composite materials can provide enhanced strength/vibration damping properties over broader operational conditions. The focus in this paper is directed toward to some aspects of engineering applications of nanoparticles and the development of the next generation of vibration damping systems, providing a road map to manufacturing technology and design concepts so as to enable interested researchers and aerospace/automotive practitioners lead this direction.

scholarly journals Next Generation Industrial IoT Digitalization for Traceability in Metal Manufacturing Industry: A Case Study of Industry 4.0

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 628
Author(s):  
Michail J. Beliatis ◽  
Kasper Jensen ◽  
Lars Ellegaard ◽  
Annabeth Aagaard ◽  
Mirko Presser
Keyword(s):  
Industry 4.0 ◽  
Manufacturing Industry ◽  
Careful Consideration ◽  
Added Value ◽  
Shop Floor ◽  
Circuit Boards ◽  
Next Generation ◽  
Road Map ◽  
Industrial Iot ◽  
Production Cycles

This paper investigates digital traceability technologies taking careful consideration of the company’s needs to improve the traceability of products at the production of GPV Group as well as the efficiency and added value in their production cycles. GPV is primarily an electronics manufacturing service company (EMS) that manufactures electronic circuit boards, in addition to big metal products at their mechanics manufacturing sites. The company aims to embrace the next generation IoT technologies such as digital traceability in their internal supply chain at manufacturing sites in order to stay compatible with the Industry 4.0 requirements. In this paper, the capabilities of suitable digital traceability technologies are screened together with the actual GPV needs to determine if deployment of such technologies would benefit GPV shop floor operations and can solve the issues they face due to a lack of traceability. The traceability term refers to tracking the geolocation of products throughout the manufacturing steps and how that functionality can foster further optimization of the manufacturing processes. The paper focuses on comparing different IoT technologies and analyze their positive and negative attributes to identify a suitable technological solution for product traceability in the metal manufacturing industry. Finally, the paper proposes a suitable implementation road map for GPV, which can also be adopted from other metal manufacturing industries to deploy Industry 4.0 traceability at shop floor level.

Carbon Nanotube Composites for Vibration Damping

2008 ◽  
Vol 47-50 ◽  
pp. 817-820 ◽  
Author(s):  
R.L. Dai ◽  
W.H. Liao
Keyword(s):  
Carbon Nanotube ◽  
Epoxy Resin ◽  
Dynamic Properties ◽  
Element Model ◽  
Vibration Damping ◽  
Segment Length ◽  
Pure Epoxy ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Set Up

It has been found that the composites of carbon nanotubes (CNTs) and epoxy resin could greatly enhance damping ability while the stiffness is kept high. In this paper, carbon nanotube enhanced epoxy resin is fabricated. A testing apparatus for obtaining composite dynamic properties is set up. In particular, the loss factors are measured. Experimental results show that CNT additive can provide the composite with several times higher damping as compared with pure epoxy. A finite element model is built to simulate the composite damping. CNT diameter and segment length are investigated using the developed model. Results show that composite damping is insensitive to CNT segment length while the effect of CNT diameter on composite damping is significant.

scholarly journals A Meta-analysis of Somatic Mutations from Next Generation Sequencing of 241 Melanomas: A Road Map for the Study of Genes with Potential Clinical Relevance

2014 ◽  
Vol 13 (7) ◽  
pp. 1918-1928 ◽  
Author(s):  
Junfeng Xia ◽  
Peilin Jia ◽  
Katherine E. Hutchinson ◽  
Kimberly B. Dahlman ◽  
Douglas Johnson ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Clinical Relevance ◽  
Somatic Mutations ◽  
Meta Analysis ◽  
Next Generation ◽  
Road Map ◽  
Generation Sequencing

Design Concepts for the Next Generation of High-Speed Diesel-Electric Locomotives

2014 ◽  
Author(s):  
John Tunna ◽  
Jingjun Zhang ◽  
Adrian Gorski
Keyword(s):  
High Speed ◽  
Next Generation ◽  
Design Concepts ◽  
Passenger Rail ◽  
High Speed Diesel ◽  
Unsprung Mass

The Passenger Rail Investment and Improvement Act (PRIIA) Section 305 Next Generation Equipment Committee’s specification for diesel-electric locomotives has several challenging requirements. Among these is limiting P2 Force to 82,000 pound force (lbf) at 125 miles per hour (mph). To achieve this, the locomotive designer would have to balance unsprung mass and axle load. A design envelope exists within which that balance can be achieved. Advanced designs of traction and braking systems are required, and attention has to be paid to minimizing the overall mass of the locomotive.

Dynamic Attenuation and Compressive Characterization of Syntactic Foams

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
Bhaskar Ale ◽  
Carl-Ernst Rousseau
Keyword(s):  
High Performance ◽  
Volume Fraction ◽  
Ultrasonic Attenuation ◽  
Dynamic Properties ◽  
High Strength ◽  
Particulate Composites ◽  
Syntactic Foams ◽  
Core Elements ◽  
Marine Applications ◽  
Damping Materials

Hollow particulate composites are lightweight, have high compressive strength, are low moisture absorbent, have high damping materials, and are used extensively in aerospace, marine applications, and in the manufacture of sandwich composites core elements. The high performance of these materials is achieved by adding high strength hollow glass particulates (microballoons) to an epoxy matrix, forming epoxy-syntactic foams. The present study focuses on the effect of volume fraction and microballoon size on the ultrasonic and dynamic properties of Epoxy Syntactic Foams. Ultrasonic attenuation coefficient from an experiment is compared with a previously developed theoretical model for low volume fractions that takes into account attenuation loss due to scattering and absorption. The guidelines of ASTM Standard E 664-93 are used to compute the apparent attenuation. Quasi-static compressive tests were also conducted to fully characterize the material. Both quasi-static and dynamic properties, as well as coefficients of attenuation and ultrasonic velocities are found to be strongly dependent upon the volume fraction and size of the microballoons.

scholarly journals DESIGN AND ANALYSIS OF AN EFFICIENT SHOCK ABSORPTION SYSTEM FOR AN AGRICULTURAL ELECTRIC TRICYCLE

2020 ◽  
Vol 61 (2) ◽  
pp. 127-134
Author(s):  
Albert Suvac ◽  
Vasilica Stefan ◽  
Cristian-Gabriel Alionte ◽  
Liviu-Marian Ungureanu
Keyword(s):  
Complex Structure ◽  
Vibration Damping ◽  
Transport Systems ◽  
Rough Terrain ◽  
Absorption System ◽  
Simulation Test ◽  
Shock Absorption ◽  
Agricultural Equipment ◽  
Transport Vehicle ◽  
Damping Systems

Ecological transport systems must be provided with efficient vibration damping systems for the comfort and safety of the user. This paper analyses a shock absorption system that can be used in an individual three-wheeled transport vehicle. The vehicle has a complex structure, with an equal size of the front and rear wheels. This uniformity of dimensions between the rear and front wheels makes it easier to travel on rough terrain and manoeuvre in a folded shape. The tricycle allows aggregation with different agricultural equipment and can be used in small farms, greenhouses, solariums, meadows, orchards, etc. In this paper we simulate several models of absorption systems with different construction parameters. The strength of the system and the efficiency of shock absorption were taken into account. The best result of the simulation test for absorption systems will be the comparison with the actual physical model used by the electric vehicle.

Development of vibration damping materials based on butyl rubber: A study of the phase equilibrium, rheological, and dynamic properties of compositions

2020 ◽  
pp. 50196
Author(s):  
Konstantin V. Pochivalov ◽  
Alexander N. Shilov ◽  
Tatyana N. Lebedeva ◽  
Anna N. Ilyasova ◽  
Roman Yu. Golovanov ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Dynamic Properties ◽  
Vibration Damping ◽  
Butyl Rubber ◽  
Damping Materials

Unifying Instructional and Game Design

2011 ◽  
pp. 192-214 ◽  
Author(s):  
David I. Schwartz ◽  
Jessica D. Bayliss
Keyword(s):  
Education Research ◽  
Instructional Design ◽  
Educational Research ◽  
Game Design ◽  
Future Directions ◽  
Active Case ◽  
Design Concepts ◽  
Road Map ◽  
Art Research ◽  
And Training

Games have impacted education, research, and industry in multiple ways, altering notions of interaction. Traditionally, instructional design and educational research have dominated academic studies of pedagogy, teaching, and training. There are many parallels between the fields of game design and education, as both draw inspiration from the study of engagement, interaction, and motivation. State-of-the-art research and trends show great potential to cross-pollinate and uplift each area. This chapter synthesizes instructional and game design concepts based on current research, comparing and contrasting key elements. Towards the goal of providing a road map for readers, the chapter demonstrates three active case studies that illustrate how both fields greatly influence each other, leading to positive outcomes. These cases demonstrate that many concepts in both fields have direct parallels. The chapter concludes with a discussion of potential future directions and trends.

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