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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.
The thickness of a saturated specimen of clay under a consolidation pressure of 100 kN/m 2 of is 24 mm and its water content is 20%. On enhance of the consolidation pressure to 20
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Question What are advantages and disadvantage of using timber fenders , plastic fenders and rubber fenders ? Answer Timber fenders - They are low in power and a
The internal forces in any cross-section of a symmetric member in pure bending are equivalent toa couple M The moment of the couple is referred to as the bending moment in the s
Q. Settlement due to Increasing Load on Surrounding Soil? When any portion of the ground surface has been loaded, it causes the surface of adjacent soil also to tilt and set
A section view of a proposed roadway is shown in Figure 1 with an existing grade point elevation of 100-ft. The proposed roadbed finish grade elevation at station 50+00 is 95.00-ft
Q. How to evaluate quality of Bricks? 1. Clour -Deep red, Carry red, Copper red, colour is indication of uniform burning and also suggests quality of clay used. Over brunt bric
Explain briefly shallow foundation?
Reason of loading on alternative spans to obtain maximum positive moment in a span of a continuous beam To attain a maximum sagging moment in a span of a continuous beam, gene
The regulations and specifications that followed for compaction works for earth dam in Oman
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