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In spot welding, the parts to be joined are normally over lapped. The work piece are clamped between two water cooled copper electrodes. On the passage of a high transient current, the interface melts over a spot and form the weld. The cooling at the electrode limits the size of the spot. A very high current is needed for a very short duration to complete the welding. The interfaces to be joined are initially cleaned by various methods, including scratch brushing and vapour decreasing. A spot weld normally contains some porosity at the weld centre, which unless excessive is harmless.
The spot welding process is difficult to use for highly conductive materials such as aluminum and magnesium.
suitable cement for adequate building
Guides for the fire risk assessment: In the UK, the Government produce guides for the FRA process that are free to download. There are a range of guides covering the ran
a rectangular beam of size 40mm*60mm is subjected to bending. the maximum bending stress is limited to 75N/mm^2. find the moment of resistance of beam section.
MODIFIED INTERNAL RATE OF RETURN (MIRR) This method is a financial analysis to rank alternative investment projects of equal size. This method is modification of internal rate of r
Define the aircraft axes & degrees of freedom. Analyse the different maneuvers that can be done by an aircraft.
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Evolutionary Growth Approach Mimic how bones / plant roots add material to regions under high stress and reduce material where there is small stress • Apply load to structure
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Variables and Quantifiers in First-Order Logic - Artificial intelligence: Now suppose that we wanted to say that there is a meal at the Red Lion which costs only three pounds.
The atmosphere in the room was tense. Ted Kimoski, Financial Director for Global Mining, had justfinished his presentation. John Campbell, Managing Director, sat quietly making not
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