Analysis of the mechanical properties ofin vitro reconstructed epidermis: preliminary results

1999 ◽  
Vol 37 (5) ◽  
pp. 670-672 ◽  
Author(s):  
P. Chistolini ◽  
G. De Angelis ◽  
M. De Luca ◽  
G. Pellegrini ◽  
I. Ruspantini
Keyword(s):  
Mechanical Properties ◽  
Preliminary Results ◽  
Reconstructed Epidermis

STUDYING THE PHYSICAL AND MECHANICAL PROPERTIES OF BUCKWHEAT WITH THE HELP OF INSTALLING A LINEAR PLANE SHEAR

2020 ◽  
Author(s):  
S.V Vladimirov ◽  
◽  
V.G. Korniychuk
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Shear Forces ◽  
Plane Shear ◽  
Preliminary Results

The design of the device for determining the shear forces of the buckwheat groats layer is considered, preliminary results of an experiment on the study of the shear forces of the buckwheat groats in the laboratory are presented.

Schwarzites to schwarzynes: A new class of superdeformable materials

MRS Advances ◽  
2020 ◽  
Vol 5 (37-38) ◽  
pp. 1947-1954
Author(s):  
Eliezer Fernando Oliveira ◽  
Douglas Soares Galvao
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Force Field ◽  
Molecular Dynamics Simulations ◽  
Elastic Properties ◽  
High Temperatures ◽  
Preliminary Results ◽  
New Class ◽  
Elastic Regime ◽  
Dynamics Simulations

AbstractIn this work, we have investigated the structural and mechanical properties of a new class of soft and superelastic materials, called schwarzynes. These materials are obtained by inserting sp carbon atoms (acetylenic groups) into the schwarzite framework. Using fully atomistic molecular dynamics simulations with the AIREBO force field, our results show that schwarzynes are stable materials up to high temperatures (1000K). Schwarzynes exhibit a very wide elastic regime, some of them up to 70% strain without structural fractures. Our preliminary results show that the elastic properties can be easily engineered by tuning the number of acetylenic groups and the crystallographic directions where they are inserted.

Integration of Electrografted Layers for the Metallization of Deep TSVs

2010 ◽  
Vol 7 (3) ◽  
pp. 119-124
Author(s):  
F. Raynal ◽  
V. Mevellec ◽  
N. Frederich ◽  
D. Suhr ◽  
I. Bispo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shelf Life ◽  
Design Space ◽  
Complete Characterization ◽  
Monitoring Strategy ◽  
Ic Design ◽  
Preliminary Results ◽  
Wide Range ◽  
Readiness Level

This paper describes production-readiness level of electrografted (eG) and chemical grafted (cG) layers deposited on a wide range of through silicon via (TSV) dimensions. Three layers are required to achieve via metallization: eG insulator, cG barrier, and eG copper seed. Complete characterization of each layer of the stack has been achieved, including electrical and mechanical properties. Impact on the 3D-IC design space of the electrografting nanotechnology optimized for highly conformal growth of TSV films is discussed. Four chemical baths are required to achieve the deposition of the three layers, shelf life, and bath monitoring strategy of each chemistry being presented in the last part of the paper. Some preliminary results of copper plating directly on top of the cG barrier are also reported.

scholarly journals Numerical Simulations of 3D Metallic Auxetic Metamaterials in both Compression and Tension

2016 ◽  
Vol 846 ◽  
pp. 565-570 ◽  
Author(s):  
Xin Ren ◽  
Jian Hu Shen ◽  
Arash Ghaedizadeh ◽  
Hong Qi Tian ◽  
Mike Xie
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulations ◽  
Large Deformation ◽  
Scale Factor ◽  
Research Interest ◽  
Preliminary Results ◽  
Auxetic Materials ◽  
Tension And Compression ◽  
Pattern Scale ◽  
Intense Research

Auxetic materials exhibit uncommon behaviour, i.e. they will shrink (expand) laterally under compression (tension). This novel feature has attracted intense research interest. However, most of previous works focus on auxetic behaviour in either compression or tension. Most of the auxetic materials are not symmetric in tension and compression under large deformation. Studies on the auxetic performance of metamaterials both in compression and tension are important but rare. As an extension of our previous research on compressive auxetic performance of 3D metallic auxetic metamaterials, numerical simulations were carried out to investigate the auxetic and other mechanical properties of the 3D metallic auxetic metamaterials in tension. The preliminary results indicated that the designed 3D metallic auxetic metamaterials exhibited better auxetic performance in compression than in tension. By increasing a pattern scale factor, auxetic performance of the 3D metallic auxetic metamaterials under tension can be improved. With proper adjustment of the pattern scale factor, an approximately symmetric auxetic performance could be achieved in compression and tension.

scholarly journals Local Materials for Building Houses: Laterite Valorization in Africa

2014 ◽  
Vol 875-877 ◽  
pp. 324-327 ◽  
Author(s):  
Gana Abdou Lawane ◽  
Adamah Messan ◽  
Anne Pantet ◽  
Raffaele Vinai ◽  
Jean Hugues Thomassin
Keyword(s):  
Mechanical Properties ◽  
Burkina Faso ◽  
Field Work ◽  
Geological Structure ◽  
Economic Evaluations ◽  
Local Conditions ◽  
Preliminary Results ◽  
Environmental Considerations ◽  
Local Materials

This paper presents the preliminary results of geological and geomechanical studies on the laterite stone exploited at Dano quarry in Burkina Faso. The field work described the geological structure of quarry sites and their environment to determine the rocks alteration and the links between the bedrock and lateritic material. Physic-mechanical properties have been studied for assessing the potentiality of this material for lightweight housing, to be completed with thermal and environmental considerations. Some social and economic evaluations are in progress in order to foster its utilization under local conditions

Implementation of BioMEMS for Determining Mechanical Properties of Biological Cells

2012 ◽  
Vol 1415 ◽  
Author(s):  
Svetlana Tatic-Lucic ◽  
Markus Gnerlich
Keyword(s):  
Mechanical Properties ◽  
Force Sensor ◽  
Temperature Sensors ◽  
Biological Cells ◽  
Nih3t3 Cells ◽  
Microelectromechanical System ◽  
Preliminary Results ◽  
Custom Made

ABSTRACTThis paper describes the implementation of a custom-made bio-microelectromechanical system for determining mechanical properties of biological cells, which is used for the measurement of mechanical properties of fibroblasts. Our system consists of several subcomponents: (a) actuator which deforms the cell in pre-determined, step-wise fashion, (b) force sensor that measures force applied onto the cell, (c) set of dielectrophoretic (DEP) electrodes for positioning cells in the desired position, (d) temperature sensors and (e) heater. Preliminary results of the mechanical properties of NIH3T3 cells have been determined using this tool and our cell compression techniques.

Mechanical Properties of Thin Film Silicon Carbide

2001 ◽  
Vol 687 ◽  
Author(s):  
Kamili M. Jackson ◽  
Richard L. Edwards ◽  
Guy F. Dirras ◽  
William N. Sharpe
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Elastic Modulus ◽  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Massachusetts Institute Of Technology ◽  
Preliminary Results ◽  
High Temperature Electronics ◽  
Microtensile Testing ◽  
Institute Of Technology

AbstractSilicon carbide is a very attractive material for a variety of applications. Originally considered for use in high power and high temperature electronics because of its large bandgap, designers of MEMS are now considering use of silicon carbide because of its stability at high temperatures, resistance to corrosives, high stiffness, and radiation resistance. However, as with any new structural material, its mechanical properties must be measured for design information. This research measures the elastic modulus, strength, and Poisson's ratio of two different silicon carbides using microtensile testing. One material is a 0.5-1νm thick film from Case Western Reserve University. Preliminary results give an average of 420 GPa for elastic modulus, a strength of 1.2 GPa, and a Poisson's ratio of 0.19. The second material is from Massachusetts Institute of Technology with an average thickness of 30 microns. Preliminary results show an elastic modulus of 430 GPa, a strength of 0.49 GPa, and a Poisson's ratio of 0.24. In addition to the most recent results, techniques used to obtain these results, microstructure investigations, and a comparison of the materials are detailed.

Hardness Prediction of AA 2024-T3 FSW Weld

2021 ◽  
Vol 1016 ◽  
pp. 1857-1862
Author(s):  
Sébastien Galisson ◽  
Denis Carron ◽  
Philippe Le Masson ◽  
Georgios Stamoulis ◽  
Eric Feulvarch ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Friction Stir Welding ◽  
Natural Ageing ◽  
Complete Model ◽  
Friction Stir ◽  
Preliminary Results ◽  
Aa 2024 ◽  
Hardness Prediction ◽  
Thermal Excursion

The hardness of AA 2024 is mainly dependent of the precipitation state in the material. This one will vary through the process of friction stir welding (FSW) which generates heat and deformations. The most important effect will be the thermal excursion which greatly affects the nature and the distribution of precipitates and so the mechanical properties of the material. Three Myhr & Grong-type submodels have been used in this study in order to simulate the variation of hardness in AA 2024-T3 FSW welds. These models allowed to simulate the hardening by growth of S-precipitates and the softening by coarsening and dissolution of GPB zones / co-clusters or S-precipitates. Finally, the natural ageing was taken into account following the Robson model. The complete model has been calibrated with isothermal data found in the literature and still has to be optimised. Nevertheless, preliminary results show the coherence of the model when performed on isothermal data. The model has been also applied to predict FSW hardness profiles that are compared to those found in the literature.

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