Engineering, 24.03.2020 17:57, gavergan

A polystyrene component must not fail when a tensile stress of 2.75 MPa is applied. Determine the maximum allowable surface crack length if the surface energy of polystyrene is 0.65 J/m2. Assume a modulus of elasticity of 3.3 GPa for polystyrene.

Answers: 1

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, DestyHilBan1183

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Answers: 3

continue

Engineering, 04.07.2019 18:10, colin774

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Answers: 2

continue

Engineering, 04.07.2019 19:10, gabigalvis1091

What is the main objective of using reheat rankine cycle?

Answers: 3

continue

Engineering, 04.07.2019 19:10, jimena15

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.

Answers: 2

continue

Do you know the correct answer?

A polystyrene component must not fail when a tensile stress of 2.75 MPa is applied. Determine the ma...