Study Notes Quiz
With reference to stresses within engineering materials:
(a) explain EACH of the following terms
(i) tensile stress; (1)
(ii) shear stress; (1)
(iii) compressive stress; (1)
(b) list TWO components within a diesel engine that are subject to the effects of EACH of the three stresses listed in part (a); (6)
(c) state the component in a 4 stroke diesel engine that has a maximum recommended service life due to constant cyclic stress. (1)
(a) Explain EACH of the following terms:
(i) plasticity;(2)
(ii) sheer stress;(2)
(iii) Young’s modulus;(2)
(iv) safety coefficient (factor of safety).(2)
(b) State TWO factors that may influence the safety coefficient in operation.(2)
Explain EACH of the following terms:
(a) ductile cast iron;(2)
(b) tensile stress;(2)
(c) work hardening;(2)
(d) shear stress;(2)
(e) Young’s modulus.(2)
Describe, with the aid of load extension graphs, EACH of the following engineering terms:
(a) limit of proportionality;(2)
(b) yield point;(2)
(c) Ultimate Tensile Strength;(2)
(d) 0.1% Proof Stress.(4)
Explain EACH of the following engineering terms:
(a) hardness;(2)
(b) proof stress;(2)
(c) ultimate tensile strength (UTS);(2)
(d) Young’s Modulus;(2)
(e) yield stress.(2)
Explain EACH of the following engineering terms, stating ONE material that exhibits EACH property:
(a) brittleness;(2)
(b) ductility;(2)
(c) hardness;(2)
(d) malleability;(2)
(e) toughness.(2)