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Q. What do you mean by Thermosetting plastics?
This plastic undergoes a number of chemical changes on heating and cure to infusible and practically insoluble articles. The chemical change is not reversible thermosetting plastics do not soften on reheating and can not be reworked. They rather become harder due to completion of any left-over polymerization reaction. Eventually, at high temperatures, the useful properties of the plastic get destroyed. This is called degradation. The commonest thermosetting plastics are: alkyds, epoxides, polyesters, phenolics and urea.
Nominal Strain and True Strain: Nominal Strain is ratio of change in length per initial length. Nominal strain = Change in length / Initial length = Δ L / L
Risks associated with identified hazards can be reduced to a reasonable level through the application of good design principles that are focused on integrating safety into the over
Evaluate mechanical work in different steady flow process: Work done by steady flow process and work done in non flow process, 1. Constant Volume Process; W 1-2 = V
Find out also the loss of energy through impact: Example 1. A bullet weighing 0.1 newton horizontally fired with a velocity of 80 metres/sec hits a wooden block, weighin
What is drilling machine The machine used for drilling is called drilling machine. The drilling operation can also be accomplished in lathe, in which the drill is held in ta
difference between stress intensity factor and stress concentration factor
Q. Two coils with self inductances 1H and 4H have a mutual inductance of 1H. The RMS value of current flowing in the two coils is 4A and 1A respectively. Find the coupling factor
Hi ... I have a final project I need to finish it soon about 3 weeks from now ... to design any machine by the Solidworks program .... please feed me back if you can .. thank you
Calculate thermal efficiency and compression: Q: Calculate thermal efficiency and compression ratio for automobile working on otto cycle. If energy generated per cycle is t
how to draw riveted joints
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