Engineering, 18.12.2019 05:31 justinb0829

Aresistance spot welding operation is performed on two pieces of 0.040 in thick sheet steel with unit melting energy of 150 btu/in3. it takes 9500 a and 0.17 sec to complete a weld nugget of φ0.190 in and 0.060 in thick.
assume the resistance of 100 micro-ohms. a) calculate the average power density in the interface area defined by the weld nuggetb) find the percentage of energy generated that went into formation of the weld nugget (i. e, calculate the ratio eweld / esource)

Answers: 1

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, settasav9641

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Answers: 3

continue

Engineering, 04.07.2019 18:10, Fahaddie

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Answers: 2

continue

Engineering, 04.07.2019 18:20, samueltaye

Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?

Answers: 1

continue

Engineering, 04.07.2019 18:20, 3076850

Prove the equivalence between the two statements of the 2nd law of thermodynamics (i. e., a violation of one statement leads to the violatio the other statement)

Answers: 2

continue

You know the right answer?

Aresistance spot welding operation is performed on two pieces of 0.040 in thick sheet steel with uni...