Investigation of Impact Behavior of Cold-Sprayed Large Annealed Copper Particles and Characterization of Coatings

2010 ◽  
Vol 20 (1-2) ◽  
pp. 252-259 ◽  
Author(s):  
Wenya Li ◽  
Xueping Guo ◽  
Min Yu ◽  
Hanlin Liao ◽  
Christian Coddet
Keyword(s):  
Impact Behavior ◽  
Copper Particles ◽  
Annealed Copper

Synthesis and characterization of copper particles decorated reduced graphene oxide nano composites for the application of supercapacitors

2018 ◽  
Author(s):  
B. V. Naveen Kumar ◽  
Putra Kumar Balla ◽  
Satya Kamal Chirauri ◽  
T. K. Visweswara Rao ◽  
Y. Ramakrishna ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Synthesis And Characterization ◽  
Nano Composites ◽  
Copper Particles ◽  
Reduced Graphene

scholarly journals Bend and Shear Tests: Suitable Methods for Mechanical Characterization of Laminated Composite Materials

2007 ◽  
Vol 539-543 ◽  
pp. 901-906 ◽  
Author(s):  
Fernando Carreño ◽  
M. Pozuelo ◽  
José A. Jiménez ◽  
Oscar A. Ruano
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characterization ◽  
Laminated Composite ◽  
Charpy Impact ◽  
Impact Behavior ◽  
Bond Quality ◽  
Shear Tests ◽  
Graphical Visualization ◽  
Laminated Composite Materials

Bend and shear tests were used to characterize the improvement in impact behavior of various ultrahigh carbon steel laminated composites. These tests turned out to deliver much more useful information about the mechanical properties of the laminates than the Charpy impact tests and were especially interesting for characterization of laminates of very high toughness values. The toughness of the various laminates was controlled by the rolling conditions that determined the quality of the bond and the appearance of delamination by the interfaces. The bend test allows determination of yield and maximum stresses, absorbed energy and permits graphical visualization of layer fracture and delaminations as testing proceeds. The shear test allows mechanical characterization of the bond quality between layers, permitting prediction of possible delaminations, and therefore, the mechanical properties of the layered material.

scholarly journals Experimental and Analytical Characterization of Drop Impact Behavior for a Mobile Haptic Actuator

2017 ◽  
Author(s):  
Byungjoo Choi ◽  
Jiwoon Kwon ◽  
Yongho Jeon ◽  
Moon Gu Lee
Keyword(s):  
High Speed ◽  
Damping Ratio ◽  
Free Fall ◽  
Element Model ◽  
Impact Behavior ◽  
Air Resistance ◽  
Impact Reliability ◽  
The Impact ◽  
The Finite Element Model

Impact characterization of linear resonant actuator (LRA) is studied experimentally by newly developed drop tester, which can control various experimental uncertainty such as rotational moment, air resistance, secondary impact and so on. The feasibility of this test apparatus was verified by comparison with free fall test. By utilizing a high-speed camera and measuring the vibrational displacement of spring material, the impact behavior was captured and the damping ratio of the system was defined. Based on the above processes, the finite element model was established and the experimental and analytical results were successfully correlated. Finally, the damage of the system from impact loading can be expected by developed model and as a result, this research can improve the impact reliability of LRA.

Damage characterization of composites to support an orthotropic plasticity material model

2018 ◽  
Vol 53 (7) ◽  
pp. 941-967 ◽  
Author(s):  
Bilal Khaled ◽  
Loukham Shyamsunder ◽  
Canio Hoffarth ◽  
Subramaniam D Rajan ◽  
Robert K Goldberg ◽  
...  
Keyword(s):  
Room Temperature ◽  
Material Model ◽  
Unidirectional Composite ◽  
Impact Behavior ◽  
Single Element ◽  
Structural Composites ◽  
Test Procedures ◽  
Damage And Failure ◽  
Orthotropic Composites

The focus of this paper is the development of test procedures to characterize the damage-related behavior of a unidirectional composite at room temperature and quasi-static loading conditions and use the resulting data in the damage sub-model of a newly developed material model for orthotropic composites. This material model has three distinct sub-models to handle elastic and inelastic deformations, damage, and failure. A unidirectional composite—T800/F3900 that was the focus of our previous work, is used to illustrate how the deformation and damage-related experimental procedures are developed and used. The implementation of the damage sub-model into LS-DYNA is verified using single-element tests and validated using impact tests. Results show that the implementation yields reasonably accurate predictions of impact behavior involving deformation and damage in structural composites.

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