Photoelastic methods wiki

The general aim of this group is to share different projects on how to make, analyze and use photoelastic materials.

A lot of publications have been written on these topics but here we go into details, we show each method step by step, we give tips, and you can ask specific questions and get answers...

Direct links

For those who knows what they are looking for, here is the list of the main pages accessible in this wiki:

• Theoritical aspects on the photoelasticimetry
• The methods to make photoelastic samples:
  • Cutting samples out of a sheet
  • Molding samples with urethane
  • Molding samples from gels
  • 3D printed samples
• The methods to image loaded photoelastic materials:
  • Using different wavelengths
  • Using transmission photoelasticity method
  • Using reflection photoelasticity method
  • Using terahertz photoelasticity method
• The methods to post-process images:
  • Detect and follow particles
  • Analyzing qualitative image intensity
  • Computing the G^2 to get average stress
  • Inverting the problem to get force measurements
• Gallerie
• Questions and answers

What is the global purpose of this group?

Photoelasticity is a fantastic way to see what is usually invisible in mechanics: stresses. It can be used for educational, scientific, industrial and even artistic purposes. However, it is not always easy to understand how it works and with which material. The purpose of this wiki is to give an overview of the different methods to deal with photoelasticity:

• How to make samples?
• How to image?
• How to analyze data?

We also report this very nice review paper on imaging methods in granular physics. It deals with most of the points detailed in this wiki.

Who is participating to this group?

Here is the list of people and institutions who make this wiki alive.

Why should I participate to this group?

We have chosen a wiki framework instead of a classical publication because we believe that this permits a lot of people to continuously bring their knowledge and answer other people wandering about the different methods.

How can I participate to this group?

You can have something to bring to the group or you can simply have something to ask. In this case send an email to jb[â]jonathan-bares.eu to create an account.