Suppose you're selecting materials for a frictional braking system which will be used to bring a moving body to a stop. It is imperative that you choose a braking surface material which will not thermally degrade as mechanical kinetic energy is converted to thermal energy during the braking process. You have a list of candidate materials for your braking system which includes maximum permissible average power dissipation. In order to relate average power dissipation rate to your system's mechanical properties (and select an appropriate material), what information will you need?

Suppose you're selecting materials for a frictional braking system which will be used to bring a moving body to a stop. It is imperative that you choose a braking surface material which will not thermally degrade as mechanical kinetic energy is converted to thermal energy during the braking process. You have a list of candidate materials for your braking system which includes maximum permissible average power dissipation. In order to relate average power dissipation rate to your system's mechanical properties (and select an appropriate material), what information will you need?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Which of the following statements is incorrect regarding the mechanical characteristics of polymers? (This question has only one correct answer) а. Metals typically have higher tensile strength but lower elastic modulus than polymers O b. The mechanical characteristics of polymers are much more sensitive to temperature changes near room temperature С. Elongation at break is typically greater for polymers than metals d. Decreasing the temperature results in increased brittleness in polymers
Which of the following are incorrect regarding the crystallinity and mechanical behavior of polymers? a. As temperature is reduced, necking behavior of plastic tensile bars completely disappears b. Semi-crystalline polymers are heat treated to increase crystallinity and improve strength c. Heat treatment always results in enhanced polymer strength, modulus, and brittleness d. Strain softening happens in elastomers where the deformation gradually leads to a decrease in stiffness under constant strain rate e. Increasing the degree of crystallinity generally increases polymer strength, elastic modulus, and ductility in semi-crystalline polymers f. The stress-strain curve slope for totally elastic and brittle polymers is always positive
Which statements are correct regarding the mechanical properties of polymers? a. Drawing increases alignment and strength, and decreases ductility (% elongation) b. Annealing increases alignment, strength and elastic modulus c. Increasing temperature results in increased elastic modulus and strength, and decreased elongation d. Decreasing strain rate causes decreased strength and elastic modulus and increased elongation e. A higher degree of crosslinking generally results in decreased percent elongation at break, and increases strength
Q12) Rubber is used for making automobile tires, gaskets and seals. Select the properties that are observed in this material. a. Highly Elastic and absorb vibrations. b. Highly tough and soft c. Highly hard and ductile. d. Highly Strong and Brittle
Which is correct for 8 and Which is correct in 9?
Which of the following are incorrect regarding the crystallinity and mechanical behavior of polymers? a. Strain softening happens in elastomers where the deformation gradually leads to a decrease in stiffness under constant strain rate b. As temperature is reduced, necking behavior of plastic tensile bars completely disappears C. The stress-strain curve slope for totally elastic and brittle polymers is always positive d. Heat treatment always results in enhanced polymer strength, modulus, and brittleness e. Semi-crystalline polymers are heat treated to increase crystallinity and improve strength f. Increasing the degree of crystallinity generally increases polymer strength, elastic modulus, and ductility in semi-crystalline polymers
solve 30-40 minutes hand written asap..i'll rate
need help with this review part A engineering of materials
Hello Sir.Good Evening I have a question in my home work related materials polimer lesson. The following below is my question. Please advice, thank you so much. "Explain how the relationship between temperature and the tensile strength of polymers ?"
Can someone assist me please? Thanks.
If you are the manufacturing engineer in a plant that produces composite materials to be used in different products, your customers require a tough, strong, and light material for their products What in terms of material will you recommend for the matrix, and for the reinforcement agent. What will be the form of reinforcement agent. What will be the direction of it. Your answer should be related only to the subjects you have studied in this course inly.
What is the difference between thermoplastics and thermosets? Select one: O a. There is no significant difference. O b. Thermosets are cross-linked, thermoplastics are linear polymers. O c. Thermoplastics are more elastic then thermosets. O d. Thermoplastics cannot be melted, while thermosets can be.