Vibration stress relieving is a method by which the whole product will
be brought in vibration (one frequency or a frequency range) at which
the chosen frequency will be near to the structures own frequency.
This means that it starts to resonate. By way of these vibrations the
structure will be loaded above it's yield strength in such way that
only at the stress concentration areas the material starts to yield
which causes reduction of present tensile stresses. Problem with this
technology is that most structures consist of different materials
types and different wall thickness's, therefore it's very difficult to
treat complex structures.
An other opportunity for relieving stresses at local areas are the so
called high frequency hammering methods like PIT (Pneumatic Impact
Treatment). When only build up stresses during welding are the problem
you can apply such technologies on every single layer immediately
after welding in order to reduce the arise of tensile stresses. When
applying this on the surface layer as well you will introduce
compressive stresses in the materials surface by which also the
fatigue strength will increase. This technology is mostly used for
enhancing the fatigue life of heavy dynamic loaded new or existing
structures but also find it's application during weld repair
activities in order to reduce the presence of residual tensile
stresses which can cause cracking.
So with this technology you can enhance your materials mechanical
properties but such technologies will never change materials micro
structure.
Best Regards,
Herman Pieper
On 19 jul, 05:38, pankaj abhang <pankaj.abha...@gmail.com> wrote:
> Dear sir
>
> what is vibratory stress releving ?
>
> PANKAJ
>
> On Sun, Jul 18, 2010 at 2:58 PM, rmsengineering <rmsengineer...@gmail.com>wrote:
>
>
>
> > U can go for vibratory stress relieving but it works only to reduce
> > the stress concentration in the metal
> > sanjeev
>
> > On Jul 18, 11:44 am, limesh M <limes...@gmail.com> wrote:
> > > Dear All,
>
> > > Anyother method in the world other than heat treatment to regain
> > > material's mechanical properties?
>
> > > Thanks and Regards,
>
> > > Limesh
>
> > --
> > To post to this group, send email to materials-welding@googlegroups.com
> > To unsubscribe from this group, send email to
> > materials-welding-unsubscribe@googlegroups.com
> > For more options, visit this group's bolg at
> >http://materials-welding.blogspot.com/
> > The views expressed/exchnaged in this group are members personel views and
> > meant for educational purposes only, Users must take their own decisions
> > w.r.t. applicable code/standard/contract documents.
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
No comments:
Post a Comment