Information

Nanoindentation

As most of u know Nanoindentation is a versatile to measure the mecahanical properties of matter. I would request experts who are in this filed join in this group and please share your knowledge through this group. A warm welcome to all.

Website: http://nanoscience.ning.com/nanoinddentation
Members: 19
Latest Activity: Oct 28, 2012

Comment Wall

Comment

You need to be a member of Nanoindentation to add comments!


Full member
Comment by NANOVEA on May 21, 2011 at 12:37am
A Superior Indenter Design: Direct Load vs. Cantilever & Lever Pivot

Indenter DesignThe Direct Loading design is just that, a direct load, providing more stability and accuracy over a longer period of time. The real power of a piezo control can be effective as the load will react at close to the same speed as the piezo. This is essential to follow quick surface events or during scratch and wear testing when this control is central to obtaining repeatable and accurate results. It is the Direct Load design that enables Nanovea to provide the widest and most accurate testing on a single Indenter module. While others claim wide testing capability and accuracy, it is doubtful that when compared their Indenter design can match that of the Nanovea Indenter Modules.

The Cantilever design (Indentation Testing) creates an indirect loading which over time weakens the flexible arms stability causing inaccurate data unless it is regularly calibrated. Furthermore, this flexibility is the reason why it is impossible for cantilever technology to attain the speed of feedback loop action-reaction of a direct loading system. 

The Lever Pivot design (Scratch Testing) creates an indirect loading on the sample under test. The additions of multiple parts compared to a direct loading system will tend to wear faster with time and is more prone to damage and more difficult to repair at often a higher cost. More importantly, the increased distance between the driving force and the Indenter slows the load control loop reaction compare to a direct loading system, for which a movement is matched right away by the indenter. This is critical during scratching as this will determine the speed at which the load can be readjusted after the surface starts cracking. This indirect loading can also create out of control oscillations when the substrate is soft such as for plastics or rubbers.


Full member
Comment by Joice Sophia on July 21, 2009 at 11:15am
Nanoindentation is a fingerprint of the mechanical property of material
 
 
 

Welcome - about us

Welcome! Nanopaprika was cooked up by Hungarian chemistry PhD student in 2007. The main idea was to create something more personal than the other nano networks already on the Internet. Community is open to everyone from post-doctorial researchers and professors to students everywhere.

There is only one important assumption: you have to be interested in nano!

Nanopaprika is always looking for new partners, if you have any idea, contact me at editor@nanopaprika.eu

Dr. András Paszternák, founder of Nanopaprika

Partner network:

Next partner events of TINC

We are Media Partner of:

Badge

Loading…

© 2018   Created by András Paszternák, PhD (founder).   Powered by

Badges  |  Report an Issue  |  Terms of Service