×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Glass behavior at low temperature

Glass behavior at low temperature

Glass behavior at low temperature

(OP)


I would like to undestand what is the main difference in mechanical characteristics when a glass is submited at low temperature.

RE: Glass behavior at low temperature

It would help quite a bit if you gave a little more information. i.e.
 temperature range.
 glass composition or type at least roughly
 Are you concerned with strength? (increases over quite a range )Are you asking about impact resistance etc.?

RE: Glass behavior at low temperature

(OP)
Dear olmanpete, thanks for your answer.

Fist at all I would like to understand the behaviour in a range from -20 C to +50 C.

I would like to undertand the changes when it is used soda-lime glass from 3 up to 10 mm thickness.

Regards,

Harold F

RE: Glass behavior at low temperature

The glass gets stronger as the temperature lowers. This is true of any amorphous material. The actual breakage point of any glass object is strongly dependent on the surface condition. breakage initiates in small scratches on the surface. Also the Chemical composition of any surface coat has a large effect. For example, this is why when you are cutting glass, it is a good idea to wet the scribe mark. The hydration forms a larger molecule which stresses the glass in microcracks. Also why your grandma's prized vase broke while you were washing it. microcracks plus hydration = stress. The point is that such considerations will overwhelm the changes in intrinsic strength over the short -20C to 50C temperature span. I may be able to help more if I knew what your problem is.  

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!


Resources