Engineering, 20.03.2020 09:05, goodkida7
Two face turning tests are performed to determine tool life equation constants Stainless tube of internal and external diameters of D1=40 mm and D2=60mm, respectively is used. The first test was performed over 8 facing passes using spindle speeds of N1=300 rpm, and the second tests was performed over 12 passes using spindle speed of N1=250 rpm. The testes were performed using feed rate of 0.15 mm/rev. The total machining time of the first and second tests are 2 min and 4 min, respectively. If the flank wear after 8 facing passes of the first test is 0.18 mm, while the flank wear after 12 facing passes of the second test is 0.16 mm. Assuming a certain tool wear criterion (i. e. VB =0.3 mm), determine the tool life constants.
Answers: 1
Engineering, 03.07.2019 15:10, margaret1758
If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.
Answers: 1
Engineering, 04.07.2019 18:10, siri5645
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
Engineering, 04.07.2019 18:10, soreese02
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:10, QueenLife4869
Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.
Answers: 3
Two face turning tests are performed to determine tool life equation constants Stainless tube of int...
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