Compound axial mermber ABC has a uniform diarneter of d= 1.25 in. • Segment (1) is an aluminum (E, - 10000 ksi) alloy. The length of segment (1) is L1 - 100 in. • Segment (2) is a copper (E2 = 17000 ksi] alloy. The length of segment (2) is L2 - 140 in. When axial force Pis applied, a strain gage attached to copper segment (2) measures a normal strain of €2 = 2300 uin/in. in the longitudinal direction. What is the total elongation of member ABC? L2 Aluminum B (2) Соpрer Answer: AL - i in.

Alloys

An alloy is an admixture of two or more metals or a metal and a non-metal. Since ancient times, man has been using alloys. Alloying helps to retain the properties of the parent matter, such as hardness, strength, toughness, ductility and is corrosion-resistant. Copper alloys such as brass have antimicrobial properties that help to fight against (Coronavirus disease 2019) COVID-19 and other hospital-acquired infections. Some common alloys are brass, bronze, solder steel, etc. Most alloys have a lower melting point than their constituents. This is due to the presence of a nonmetal as one of the constituents that behaves as an impurity and restricts the raise of melting point.