subject
Engineering, 15.11.2019 22:31 alexisdiaz365

Low-carbon steel is known to have a slight but not negligible strain-rate sensitivity at room temperature. to determine the sensitivity, specimens of w = 12.68 mm width, h = 3.23 mm thickness, an l = 50 mm gage length were tested with a cross head speed of 6 mm/min until a load of 10660 n was reached. at this point speed was instantaneously increased tenfold to 60 mm/min and load increased to 11096 n. calculate (a) the strain rate sensitivity exponent and (b) strength constant.

ansver
Answers: 1

Another question on Engineering

question
Engineering, 04.07.2019 18:10
An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
Answers: 3
question
Engineering, 04.07.2019 19:20
Apreheater involves the use of condensing steam at 100°c on the inside of a bank of tubes to heat air that enters at 1 atm and 25°c. the air moves at 5 m/s in cross flow over the tubes. each tube is 1 m long and has an outside diameter of 10 mm. what is the minimum value of nl needed to achieve an outlet temperature of t 75 c? what is the corresponding pressure drop across the tube bank?
Answers: 3
question
Engineering, 06.07.2019 03:20
Aload of 10kn is to be suddenly applied to the free end of a vertical rod of length 500 mm, the upper end being rigidly fixed. 190 mechanical science what should the diameter of the rod be if the maximum stress in the rod is not to exceed 100 mpa? the tensile modulus of the rod is 205 gpa.
Answers: 2
question
Engineering, 06.07.2019 04:10
Consider a power plant with water as the working fluid that operates on an ideal rankine cycle. it has a net power output of 45mw. superheated steam enters the turbine at 7mpa and 500°c (h=3411.4 kj/kg; s=6.8 kj/kg k) and is cooled in the condenser at a pressure of 10 kpa by running cooling water from a lake through the tubes of the condenser at a rate of 2000 kg/s. (a) show the cycle on a t-s diagram (a right schematic is fine - you do not need to calculate the temperatures at each point); (b)-determine the work done by the turbine and the pump in kj/kg; (c)-the mass flow rate of water used by the power plant; (d)-the thermal efficiency of the cycle; (e)-the temperature rise of the cooling water. assume the cooling water is incompressible with cp 4.18 kj/kg°c.
Answers: 3
You know the right answer?
Low-carbon steel is known to have a slight but not negligible strain-rate sensitivity at room temper...
Questions
question
English, 04.05.2021 18:00
question
English, 04.05.2021 18:00
question
English, 04.05.2021 18:00
question
Mathematics, 04.05.2021 18:00
Questions on the website: 13722365