Thursday, October 27, 2011

Enginering Materials- Module 4, Activity 1


Analyze the stress -strain curves of the four tested material specimens( Steel , Brass, Copper and  Aluminum) created earlier to find the following:
1.   Which material has the highest compressive strength?
____________________________________________________________

2.   Which material has the highest yield strength?
____________________________________________________________


Sunday, October 2, 2011

Engineering Materials- Module 2 -Activity 1

1. Why pieces of cast iron can not be bent? What are the properties that the material should have in order to be bent?



2. Give examples of situations where the material is subjected to tensile, compression and shear stress.



3. Classify the materials; lead, rubber, steel, and concrete under headings elastic, plastic, and brittle.

Wednesday, September 21, 2011

Engineering materials - Module 1- Activity 2

Look at an electric soldering iron and do the following:


. List the materials used to manufacture it.












2. Discuss what properties each of the materials used has and write them down.

 
 

Tuesday, October 26, 2010

Engineering Materials - Module 3 activity 1

Activity 1


For each of the non-destructive testing methods shown below list one major limitation to its use:



Visual test.

Die Penetrant test.

Magnetic test

Ultrasonic test

Radiographic test.

Use the engineering materials class’s blog created by your instructor to post your answers.

Tuesday, October 19, 2010

ENGINEERING MATERIALS- MODULE 2-Activity 2

Answer the following questions:

  1. Why pieces of cast iron can not be bent? What are the properties that the material should have in order to be bent?






2. Give examples of situations where the material is subjected to tensile, compression and shear stress.





3.Classify the materials; lead, rubber, steel, and concrete under headings elastic, plastic, and brittle.