Previous in Forum: FR-4 and GF material   Next in Forum: Start-up Engineer and Industrial Product Design
Close
Close
Close
2 comments
Rate Comments: Nested
Anonymous Poster

Roughness Measurement

02/19/2007 8:15 AM

Hello!

We are two last year engineerstudents at HiST in Trondheim, Norway. We are now in the middle of our main project. The project is to get atomatic control of surfaceprofile on steelpipes. We want to usa a non-contact measuring method. We also have a problem wich is that the steelpipes pasing trough in the factory can change dimension from 4-20 inch in diameter. It would also be very nice if we might be able to get a graphic image of the profile from the measurement.

That's our problem. Thanks for any help

Truls Krohg

Email: tkrohg@yahoo.no

Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Associate

Join Date: Sep 2006
Location: Culver City, CA
Posts: 52
#1

Re: Roughness Measurement

02/19/2007 10:39 AM

Hello, a bit more information would be helpful. Are you trying to get a feedback loop going to change or improve the pipe finish as the process continues? What kind of a finish are you looking for? Is the pipe reflective? How clean/dirty is the pipe while being created? By surface profile do you mean surface finish measured as RMS or AA or are you interested in some other parameter? Do you need to check the pipe in total or just want to sample? Are there issues of lay in the pipe, do you have to measure perpendicular to the lay to get a valid measurement? Sorry, lots of questions need to be answerred before we can start to develop a solution.

best regards

paul horgan

__________________
It is better to light a lamp than curse the darkness
Reply
Anonymous Poster
#2
In reply to #1

Re: Roughness Measurement

03/19/2007 7:44 AM

Hello!

The steelpipes are used in the offshore-industri. The steelpipes roughness is random and in the measure range of 100micrometer. After sandblasting the pipes are washed. The pipe is near white clean (Sa 2 1/5).

By surface profile i mean a picture off the surface in 2D or 3D where you can measure different parameter. We are interested in Ra,Ry,Rz and Peak Count.

We just want to sample a short distance on every pipe.

The steelpipes lying still when we measure the roughness.

The main goal is to get a feedback loop going to improve the sandblasting prosess.

Best regards

Truls Krohg

Reply
Reply to Forum Thread 2 comments

Previous in Forum: FR-4 and GF material   Next in Forum: Start-up Engineer and Industrial Product Design

Advertisement