Material properties

Question 1

Ductility

Answer 1

the ability of how much a material can bend

Question 2

yield strength

Answer 2

the point ( stress level) at which permanent deformation occurs. changes from elastic deformation to plastic deformation. slightly after proportional limit

Question 3

modulus of elasticity.

Answer 3

the ratio of stress/strain of a material

Question 4

Ultimate strength.

Answer 4

the stress level at which a material can not take any more load. the point at which failure occurs

Question 5

proportional limit

Answer 5

the point at which you can not stretch the material any further without it undergoing plastic deformation. slightly before yield strength

Question 6

thermal expansion

Answer 6

the property of a material to expand when exposed to increases in temperature. change in length= TE coefficient change in temperature x original length

Question 7

stiffness/rigidity

Answer 7

the ability of a material to resit deformation and return to its original shape after being acted upon by an external force