back to top
My wish lists
Save your wish list
If you want to add more content to your wish list, simply log in. If you do not have a user account, please register for the Hanser Customer Center.

» Do you already have a user account? Please log in here.
» Don't have a user account yet? Please register here.
Your wish lists
If you want to use your wish list during your next visit, simply log in. If you do not have a user account, please register for the Hanser Customer Center.
» Do you already have a user account? Please log in here.
» Don't have a user account yet? Please register here.

« Back

Your advantages at a glance

  • One login for all Hanser portals
  • Individual home page for faster access to preferred content
  • Exclusive access to selected content
  • Personal wish lists on all portals
  • Central management of your personal information and newsletter subscriptions

Register now
Deutsch
Bookmark Bookmarked

The influence of low temperature and hydrogen on the failure modes of fiberglass composite material under steady-state and cyclic loads

This study was conducted to describe the failure modes of fiberglass-reinforced polymers at room temperature and low temperatures by means of appropriate experiments.

The failure modes of fiberglass-reinforced polymers at room temperature are influenced by stress corrosion cracking. At 77 K, when these processes are frozen, the fracture stress of unidirectional fiberglass-reinforced polymer is 50 % higher than it is at room temperature. After a quasi steady-state tensile test the specimen is nearly fragmented as a result of the immense elongation at fracture.

Experiments on composites wound crosswise indicate that the material, at 77 K, behaves nearly linearly elastic up to the point of fracture. At room temperature, however, visco-elastic behavior of the polymer matrix dominates.

In general, unidirectional and cross-wound composites are degraded strongly in a vibration test.

The influence of hydrogen on unidirectional fiberglass-reinforced polymer became apparent only in fatigue tests. After three months of storage of the samples in gaseous hydrogen at 80 °C, the subsequent vibration test at 77 K showed an increase by 30 % in fatigue strength compared to samples not stored in this way.

Lesen Sie die deutsche Zusammenfassung auf Kunststoffe.de
Author
 Gunter Geiss

Gunter Geiss
Institut für Materialforschung II
Universität Karlsruhe (TH)

Information

Free keywords: Wear, Wear Smulation, Span Time Prediction, Multiscale Approach, Tribology, PTFE, Polytetrafluoroethylene, Sealing Technology, Shaft Seal Ring
Institute / chair: Fakultät für Maschinenbau der Universität Karlsruhe (TH)
Language: German
Technical consultant for expert services: Prof. Dr. rer. nat. Dietrich Munz (Betreuer), Prof. Dr. rer. nat. Günther Hartwig
Publication year: 2000
Provider: Wissenschaftlicher Arbeitskreis Kunststofftechnik (WAK) / Kunststoffe.de

Further Information

About the PhD Dissertation Data Base

WAK-Logo

In cooperation with the Wissenschaftlicher Arbeitskreis Kunststofftechnik (WAK), we provide free access to current dissertations in the field of plastics technology.

Further information and contact

WAK-Homepage