scholarly journals Characterization of visco-elastic material parameters by means of the ultrasonic polar scan method

2015 ◽  
Vol 138 (3) ◽  
pp. 1885-1885
Author(s):  
Koen Van Den Abeele ◽  
Arvid Martens ◽  
Mathias Kersemans ◽  
Joris Degrieck ◽  
Steven Delrue ◽  
...  
Keyword(s):  
Elastic Material ◽  
Material Parameters ◽  
Ultrasonic Polar Scan

scholarly journals Raman Spectroscopy Investigation of Graphene Oxide Reduction by Laser Scribing

2021 ◽  
Vol 7 (2) ◽  
pp. 48
Author(s):  
Vittorio Scardaci ◽  
Giuseppe Compagnini
Keyword(s):  
Raman Spectroscopy ◽  
Graphene Oxide ◽  
Reduce Graphene Oxide ◽  
Oxide Reduction ◽  
Material Parameters ◽  
Laser Scribing ◽  
Wide Range ◽  
Scan Speed ◽  
Laser Reduction

Laser scribing has been proposed as a fast and easy tool to reduce graphene oxide (GO) for a wide range of applications. Here, we investigate laser reduction of GO under a range of processing and material parameters, such as laser scan speed, number of laser passes, and material coverage. We use Raman spectroscopy for the characterization of the obtained materials. We demonstrate that laser scan speed is the most influential parameter, as a slower scan speed yields poor GO reduction. The number of laser passes is influential where the material coverage is higher, producing a significant improvement of GO reduction on a second pass. Material coverage is the least influential parameter, as it affects GO reduction only under restricted conditions.

Incompressibility and mesh sensitivity analysis in finite element simulation of rubbers

2016 ◽  
Vol 7 (1) ◽  
pp. 7-12 ◽  
Author(s):  
D. Huri
Keyword(s):  
Finite Element ◽  
Material Characterization ◽  
Numerical Stability ◽  
Material Parameters ◽  
Linear Finite Element ◽  
Element Simulation ◽  
Finite Element Calculations ◽  
Mesh Density ◽  
Rubber Component

Non-linear finite element calculations are indispensable when important information of the material response under load of a rubber component is desired. Although the material characterization of a rubber component is a demanding engineering task, the changing contact range between the parts and the incompressibility behaviour of the rubber further increase the complexity of the investigations. In this paper the effects of the choice of the numerical material parameters (e.g. bulk modulus) are examined with regard to numerical stability, mesh density and calculation accuracy. As an example, a rubber spring is chosen where contact problem is also handled.

Thermomechanical material parameters characterization of the superalloy PN 3601669-7 under low-velocity impacts

2011 ◽  
Vol 25 (7) ◽  
pp. 1629-1636
Author(s):  
Abdelkader Nour ◽  
Samir Lecheb ◽  
Nouredine Chikh ◽  
M. Ouali Si-Chaïb
Keyword(s):  
Low Velocity ◽  
Material Parameters

scholarly journals Principle and setup for characterization of material parameters for high speed forming and cutting

2017 ◽  
Vol 207 ◽  
pp. 2000-2005 ◽  
Author(s):  
Marc Tulke ◽  
Christian Scheffler ◽  
Verena Psyk ◽  
Dirk Landgrebe ◽  
Alexander Brosius
Keyword(s):  
High Speed ◽  
Material Parameters ◽  
High Speed Forming

Characterization of the passive and active material parameters of the pubovisceralis muscle using an inverse numerical method

2018 ◽  
Vol 71 ◽  
pp. 100-110 ◽  
Author(s):  
M.E.T. Silva ◽  
M.P.L. Parente ◽  
S. Brandão ◽  
T. Mascarenhas ◽  
R.M. Natal Jorge
Keyword(s):  
Numerical Method ◽  
Active Material ◽  
Material Parameters

Mechanical, Electrical and Thermal Characterization of Commercially Available LTCC Dielectric Tapes

2013 ◽  
Vol 543 ◽  
pp. 212-215
Author(s):  
Goran Radosavljević ◽  
Nelu Blaž ◽  
Andrea Marić ◽  
W. Smetana ◽  
Ljiljana Živanov
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Electrical Properties ◽  
Material Characterization ◽  
Mechanical Characterization ◽  
Thermal Characterization ◽  
Material Parameters ◽  
Mechanical And Electrical Properties

Presented paper deals with mechanical and electrical properties of several commercially available LTCC (Low Temperature Co-fired Technology) tapes, as well as their thermal characterization. Three commercially available dielectric tape materials provided by Heraeus (CT700, CT707 and CT800) are investigated. The samples for determination of significant material parameters are prepared using the standard LTCC fabrication process. Results of the material characterization (chemical analysis, surface roughness electrical and mechanical properties) are presented. In addition thermo-electrical and-mechanical characterization of investigated tapes analysis is performed.

Characterization of Electromagnetic Properties of MID Materials for High Frequency Applications up to 67 GHz

2014 ◽  
Vol 1038 ◽  
pp. 63-68 ◽  
Author(s):  
Quang Huy Dao ◽  
Aline Friedrich ◽  
Bernd Geck
Keyword(s):  
Radio Frequency ◽  
Material Properties ◽  
High Frequency ◽  
Coplanar Waveguide ◽  
Electromagnetic Properties ◽  
Research Project ◽  
Material Parameters ◽  
Important Material ◽  
Rf Performance

This paper presents results of the research project: "Characterization of the radio frequency (RF) properties of LDS-MID" where RF parameters of laser direct structureable (LDS) molded interconnect device (MID) materials were investigated. First of all the most important material parameters influencing the RF performance of a device are introduced. In the next section the broadband characterization of the metallization and material properties using a coplanar waveguide (CPW) is described. For a selected LDS material the conduction losses due to different metallization compositions are discussed in detail.

Characterization of Mechanical Deformation of Nanoscale Volumes

2002 ◽  
Vol 740 ◽  
Author(s):  
Christopher R. Perrey ◽  
William M. Mook ◽  
C. Barry Carter ◽  
William W. Gerberich
Keyword(s):  
Mechanical Behavior ◽  
Defect Structure ◽  
Mechanical Deformation ◽  
Chemical Homogeneity ◽  
Preparation Methods ◽  
Material Parameters ◽  
Tem Characterization ◽  
Study Techniques ◽  
Sample Preparation Methods

ABSTRACTThe mechanical properties of nanoscale volumes and their associated defect structure are key to many future applications in nanoengineered products. In this study, techniques of mechanical testing and microscopy have been applied to better understand the mechanical behavior of nanoscale volumes. Nanoindentation has been used to investigate important mechanical material parameters such as the elastic modulus and hardness for single nanoparticles. New sample preparation methods must be developed to allow the necessary TEM characterization of the inherent and induced defect structure of these nanoparticles. Issues of chemical homogeneity, crystallinity, and defect characteristics at the nanoscale are being addressed in this study. This integration of investigative methods will lead to a greater understanding of the mechanical behavior of nanostructured materials and insights into the nature of defects in materials at the nanoscale.

Sign in / Sign up

Export Citation Format

Share Document