Cure Evaluation of Two Critical Composite Hybrid Flat Panels for use in a High-Dimensional Stability Satellite Application

Today's world has very much demand for the development of microscale devices, due to its less cost, space requirements, high-dimensional stability and especially manufacturing time. In this paper, we have design and simulated MEMS based microactuator and microneedle integration which will be very helpful for blood sampling device like e-mosquito. The dimensions of the modeled beam are of 100 mm long, 30 mm width, 10 mm thickness. This new design model consists of piezoceramic material sandwiched between two metal electrodes and the piezoelectric actuator is made with microneedle which will help for blood sampling purposes. The results after the simulation of this new model present that it will be suitable for blood sampling analysis with aluminum as electrodes and silicon as microneedle.

Download Full-text

Novel Trisulfonated Poly(phthalazinone ether phosphine oxide)s with High Dimensional Stability for Proton Exchange Membrane

Energy & Fuels ◽

10.1021/acs.energyfuels.0c00085 ◽

2020 ◽

Vol 34 (4) ◽

pp. 4999-5005 ◽

Cited By ~ 1

Author(s):

Shanshan Zhang ◽

Huiping Liu ◽

Yunlong Tan ◽

Chen Lu ◽

Songli Mao ◽

...

Keyword(s):

Phosphine Oxide ◽

Dimensional Stability ◽

Proton Exchange Membrane ◽

Proton Exchange ◽

High Dimensional ◽

Exchange Membrane

Download Full-text

Research on the Properties of High-strength Gypsum Based Tile Adhesive in Interior Decoration

E3S Web of Conferences ◽

10.1051/e3sconf/202016505015 ◽

2020 ◽

Vol 165 ◽

pp. 05015

Author(s):

Ji Xiu Zhang ◽

Ye Zhang ◽

Ji Kang Liu ◽

Yuan Chao Miao ◽

Sai Hong Duan

Keyword(s):

Bond Strength ◽

Dimensional Stability ◽

High Strength ◽

High Dimensional ◽

Strength Development ◽

Interior Decoration ◽

High Bond ◽

High Bond Strength ◽

Early Strength ◽

Interface Treatment

In this paper, a new early strength tile adhesive is prepared by using α- high strength gypsum and its properties are discussed. The research methods refer to relevant Chinese standards. The results show that the tensile bond strength of the adhesive can reach 0.6 MPa in one day and 1.5 MPa in 7 days, which is close to 80% of 28-day strength. It is indicating that the adhesive has high bond strength, rapid strength development, and high dimensional stability. It effectively solves the problems that the traditional cement-based tile adhesive is prone to hollowing, falling off, and cracking. Additionally, no interface treatment is required during the using process of this gypsum-based adhesive.

Download Full-text

Preparation and Dimensional Stability of Organo-Montmorillonite (O-MMT) Treated Unsaturated Polyester Hybrid Composites Filled with Keratin Fiber

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.980.28 ◽

2014 ◽

Vol 980 ◽

pp. 28-32

Author(s):

Kiew Kwong Siong ◽

Soon Kok Heng ◽

Sinin Hamdan ◽

Moaz Mohsin ◽

Akshay Kakar ◽

...

Keyword(s):

Water Absorption ◽

Dimensional Stability ◽

Hybrid Composites ◽

Unsaturated Polyester ◽

Fiber Content ◽

High Dimensional ◽

Thickness Swelling ◽

Stability Properties ◽

Chicken Feathers ◽

Keratin Fiber

O-MMT treated unsaturated polyester based hybrid composites were prepared using keratin fiber obtained from chicken feathers. Fibers of similar dimension were selected to fabricate composites through hand lay-up method. The preparation and dimensional stability properties of keratin fiber as reinforcements in composites is outlined in this paper. Varying O-MMT contents in nancomposites is performed to investigate the effects on the dimensional stability (water absorption and thickness swelling) of the composites. Results indicated that increasing fiber content deteriorates dimensional stability of the composites and composites. However, improvements in dimensional stability of the keratin fibercomposites were observed with O-MMT. O-MMT treatment reduces the water absorption and thickness swelling, especially at 5wt% of O-MMT concentrationat all range of fiber content. At 5wt% concentration of O-MMt, 10wt% keratin fiber content marks the lowest water absorption and thickness swelling with rate of 0.65% and 1.93%, respectively. Adopting 10wt% of keratin fiber at 5wt% of O-MMT can be utilized for application requiring high dimensional stability.

Download Full-text

A Study on Binder Jetting of High Dimensional Stability Alloy

10.20944/preprints202102.0238.v1 ◽

2021 ◽

Author(s):

N. Azurmendi ◽

A. Lores ◽

I Agote

Keyword(s):

Process Parameters ◽

Dimensional Stability ◽

Microstructural Analysis ◽

Temperature Fluctuations ◽

High Dimensional ◽

Full Density ◽

Main Process ◽

Correct Performance ◽

Final Density ◽

Binder Jetting

This work opens a new pathway to fabricate high dimensional stability Invar36 aerospace devices with Binder Jetting technology, for applications where temperature fluctuations directly interfere in the correct performance of high sensibility systems. Since full density part fabrication is one of the main ongoing challenges for Binder Jetting, the leading objective of this work is to study and optimise the main process parameters to increase the final density of Invar36 printed parts. Microstructural analysis and obtained density and CTE values, confirmed the feasibility to fabricate Invar36 parts.

Download Full-text

PROPRIEDADES FÍSICAS E MECÂNICAS DA MADEIRA DE Toona ciliata EM DIFERENTES IDADES

FLORESTA ◽

10.5380/rf.v43i4.30559 ◽

2013 ◽

Vol 43 (4) ◽

pp. 663 ◽

Cited By ~ 2

Author(s):

Rafael Leite Braz ◽

José Tarcísio da Silva Oliveira ◽

Marina Donária Chaves Arantes ◽

Brunela Pollastrelli Rodrigues

Keyword(s):

Specific Gravity ◽

Dimensional Stability ◽

Modulus Of Rupture ◽

High Dimensional ◽

Forest Plantations ◽

Mechanical Parameters ◽

High Mechanical Strength ◽

Anisotropic Factor ◽

Toona Ciliata ◽

Wood Resistance

O presente trabalho teve como objetivo caracterizar a madeira de árvores de Toona ciliata (cedro australiano) aos 6, 12 e 18 anos de idade, provenientes de um plantio florestal na região de Venda Nova do Imigrante, ES. Foram avaliadas as propriedades físicas quanto à densidade básica e à retratibilidade e as propriedades mecânicas quanto à resistência à compressão axial e ao módulo de ruptura e módulo de elasticidade à flexão estática da madeira. Foram utilizadas três árvores para cada idade, das quais foram retiradas toras, que foram desdobradas em pranchas radiais para retirada de corpos de prova, ensaiados de acordo com as normas MB 26/40 (ABNT, 1940) e NBR 7190 (1997). Observou-se o aumento da densidade básica e a redução das contrações tangencial e volumétrica e do fator anisotrópico em função do aumento da idade. O uso da madeira deve ser limitado em situações que exijam elevada resistência mecânica e na fabricação de produtos com elevada estabilidade dimensional. Deve-se optar por árvores com idades superiores, viabilizando a aplicabilidade da madeira com qualidade para diversos fins.Palavras-chave: Cedro australiano; resistência da madeira; estabilidade dimensional. AbstractPhysical and mechanical properties of wood of Toona ciliata at different ages. The objective of the present study was to characterize the wood of trees Toona ciliata at 6, 12 and 18 years old, coming from forest plantations in the region of Venda Nova do Imigrante at Espírito Santo State in Brazil. We evaluated the physical properties as the specific gravity and shrinkage, and the mechanical parameters in relation to the compressive strength and modulus of rupture and elasticity in static bending. We use tree logs that were sawed and prepared the samples for analysis according to standards MB 26/40 (ABNT, 1940) e NBR 7190 (1997). We observed an increase in specific gravity and decrease of tangential and volumetric shrinkages and the anisotropic factor with the increase for the age. The use of this wood should be limited in situations which high mechanical strength is required and manufacture of products with high dimensional stability. We should opt for more aged trees, allowing the applicability of quality wood for various purposes.Keywords: Australian cedar; wood resistance; dimensional stability.

Download Full-text