What do you mean by ozone test, Civil Engineering

Assignment Help:

Q. What do you mean by Ozone Test?

Some research and studies determined that the ozone test was unnecessary as this affects only the surface layer.  In un-stretched rubber, ozone degradation is confined to a thin surface layer, typically 0.5  µ. Ozone cracks develop at right angles to the tensile strain and they degrade rubber's tensile strength and may also initiate fatigue growth that ultimately leads to failure of rubber products.  Because cracks only occur in regions where tensile stresses are induced, they are unable to penetrate very far into objects, which are under compression.  In bearings, the growth of cracks ceases close to the surface because cracks quickly encounter compressive rather than tensile stresses. Therefore, it has been contended that ozone damage is a serious concern in thin-walled products, but not in those bulky products like bearings. Contrarily there is a harmful effect because the manufacturers use anti ozanant waxes to protect against ozone attack.  This viscous layer of wax is responsible for a significant number of serious slipping problems where the bearings 'walked-out' of the support area.


Related Discussions:- What do you mean by ozone test

Calculate the most probable value, The most probable value of the following...

The most probable value of the following observations on the same angle (35º 17' 42" ; 35º 17' 38" ; 35º 18' 00" ; 35º 17'; 22"; 35º 17' 42");  is most nearly:   35º 17' 40.8

Define the term - permanent load, Define the term - permanent load Wher...

Define the term - permanent load Where the permanent load is less than or equal to 25% of the design imposed load, deflections may be calculated using any elastic method. When

State the effect of friction for a straight tendon, State the effect of fri...

State the effect of friction for a straight tendon The length effect represents the effect of friction for a straight tendon due to slight imperfections of the duct. In practic

Explain the departure of a line - transportation, Explain the Departure of ...

Explain the Departure of a line - Transportation Departure of a line is the distance that the line extends in an east or west direction. A line that runs towards east has a pos

Foundation at Different Levels, Foundation at Different Levels on soft rock...

Foundation at Different Levels on soft rock. what is minimum distance in two between footing ?

Design of a weir, how do you design a weir - broad crested shape

how do you design a weir - broad crested shape

Auto cad drawing , im looking for someone to do drawing in autocad 3D 2013 ...

im looking for someone to do drawing in autocad 3D 2013 with report

Concrete, What is compacting factor

What is compacting factor

Slump test, why only frustum cone use in slump

why only frustum cone use in slump

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd