WU Metal Strength Poisson Ratio Strain Hardening & Value of True Stress Worksheet

Question Description

I have three Materials question: (please give simple answer)

Question 8. What are some important mechanisms to increase the strength of metals? Give examples.

Question 9. A cylindrical bar of 10.00 mm diameter of some metal is deformed elastically by an axial tensile load of 15,000 N. The diameter of the bar decreases by 0.07 mm subsequent to the load application.

(a) Compute Poissons ratio for this material if its elastic modulus is 100 GPa.

(b) What is your best guess on the material being tested?

Question 10. A tensile test is performed on a metal and it is found that a true plastic strain of 0.2 is produced for a true stress of 575 MPa. The value of the strength coefficient for this metal is 860 MPa.

(a) Determine the value of the strain hardening exponent for this metal.

(b) Calculate the value of true stress for the same metal if the true strain is increased to 0.3.

(Hint: the equation of the plastic portion of the true stress true strain curve is given as: )



^{Have a similar assignment? "Place an order for your assignment and have exceptional work written by our team of experts, guaranteeing you A results."}

Our Service Charter

1. Professional & Expert Writers: Eminence Papers only hires the best. Our writers are specially selected and recruited, after which they undergo further training to perfect their skills for specialization purposes. Moreover, our writers are holders of masters and Ph.D. degrees. They have impressive academic records, besides being native English speakers.

2. Top Quality Papers: Our customers are always guaranteed of papers that exceed their expectations. All our writers have +5 years of experience. This implies that all papers are written by individuals who are experts in their fields. In addition, the quality team reviews all the papers before sending them to the customers.

3. Plagiarism-Free Papers: All papers provided by Eminence Papers are written from scratch. Appropriate referencing and citation of key information are followed. Plagiarism checkers are used by the Quality assurance team and our editors just to double-check that there are no instances of plagiarism.

4. Timely Delivery: Time wasted is equivalent to a failed dedication and commitment. Eminence Papers are known for the timely delivery of any pending customer orders. Customers are well informed of the progress of their papers to ensure they keep track of what the writer is providing before the final draft is sent for grading.

5. Affordable Prices: Our prices are fairly structured to fit in all groups. Any customer willing to place their assignments with us can do so at very affordable prices. In addition, our customers enjoy regular discounts and bonuses.

6. 24/7 Customer Support: At Eminence Papers, we have put in place a team of experts who answer all customer inquiries promptly. The best part is the ever-availability of the team. Customers can make inquiries anytime.