Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

ball cratering

ball cratering

ball cratering

I would like to know web sites where to find information about micro abrasion wear test (ball cratering) and micro abrasion test apparatus. In special, information of test made in different materials.

Thank you

RE: ball cratering

Please try the Plint&Partners web site (http://www.plint.co.uk). As far as I know, they are specialist about microfriction equipment. Two years ago, I used their microfriction machine for my studies and as a result, I took very succesful results from my experiments.


RE: ball cratering

Try this web site:

RE: ball cratering

Try CSEM website. They have something called as a CALO test equipment which is used to find the thickness of the PVD coatings. It makes use of a carbide ball and a flat coated surface. The ball rotates against the coated surface producing a crater. The diameters of the inner uncoated surface and the coated surface give the measure of coating thickness. I don't know if this is what you were looking for, but thought this could be some use to you.

RE: ball cratering

Does anyone know if there is a relationship between fretting corrosion and contact pressure in two microscopically sliding oscillating surfaces ?

I am trying to establish some load limits for ball bearings where there is a tendency to 'false brinell' due to load fluctuations when the brg is not rotating. The application is a wind turbine blade brg.

Some manufacturers have suggested that the relationship resembles a bending fatigue S-N curve, ie. below a certain contact stress level f/b will not occur regardless of how many movement cycles are made. I dont really believe this is the case. I think low contact stresses will create the same level of damage given sufficient cycles. Any thoughts or experience ?


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close