Part A of this module is built on the concepts of Mechanics contained in PHYS 1702, extending the theory further to more practical applications. Starting from a review of the basic theory of kinematics in linear and circular form, the study includes rotational dynamics and simple harmonic motion the emphasis is to correlate theory with practice and enable the students to identify problems in applied cases.
Part B examines the effects of applying a stress to a material and how the results depend on the structure of the material concerned. Different material types are examined. Methods of destructive and non-destructive testing are examined and methods of material strengthening described.
Part A – Mechanics
- Review
Mass, velocity, acceleration, force, weight, momentum, Newton’s laws of motion, Newton’s law of gravitation, law of conservation of momentum, equations of motion, tension, friction, pressure, work, energy, power, kinetic energy, potential energy.
- Vectors, resolution of vectors
Principle of parallelogram of forces, principle of triangle of forces, applications. Relative velocity. Projectiles Circular motion, angular velocity, angular acceleration, centripetal force.
- Moments of forces, torque, centre of mass, centre of gravity. Parallel forces, Machines, the lever, mechanical advantage, velocity ratio, efficiency. Inclined plane. Wheel and axle.
- Circular motion, motion in a vertical circle.
- Angular components of motion, rotation of rigid body, torque, couples, moment of inertia, angular momentum, angular momentum of a rotating bodies, Projection of circular motion as Simple harmonic motion.
- Amplitude, period, frequency, angular frequency, linear velocity, angular velocity, displacement, acceleration, force.
- Application of SHM in springs and pendulums.
Part B – Mechanical Properties of Materials
- Review of stress/strain curves;
- Young’s Modulus, Bulk Modulus, Shear Modulus and the relationships between them. Poisson’s ratio;
- Relationship between the generalised stress/strain curve for metals, ceramics and polymers;
- The structure and classification of ceramic systems- clays, glasses and crystalline;
- The structure and production of polymers;
- Degree of polymerisation, number average, weight average molecular weights of a polymer blend;
- Mechanical testing – tensile, compression, fatigue, creep, impact;
- Importance of particular tests to particular materials;
- Fracture mechanisms;
- Strengthening Mechanisms- Work hardening, Solution Strengthening, Dispersion Strengthening;
- Methods of non-destructive testing.
24 hrs lectures, 18 hrs laboratory work, 4 hrs tutorials.
Delivered over one semester.
| Module Content & Assessment | |
|---|---|
| Assessment Breakdown | % |
| Formal Examination | 36 |
| Other Assessment(s) | 64 |