Magnetism, Oscillations and WavesLaajuus (3 ECTS)

Objective

During completion of this course the student acquires basic knowledge of physical concepts, laws, principles and theories in the fields of electric effects, magnetism, electromagnetism, oscillations and waves. Student becomes aware that physical theories are based on and verified by observations and measurements.

During completion of this course the student will learn how to formulate and solve equations related to basic physical problems that appear in the fields of automation technology applications covered by this course. The knowledge gained helps the student in independent information acquisition in further studies and professional activities.

Content

Resistivity, resistive sensors, superconductivity, dielectric material properties
Magnetism
- magnetic field, electric and magnetic deflection, sources of magnetic field, motion of charges in magnetic fields, magnetic force on current carrying conductor, DC motor, Hall probe, mass spectrometer, magnetic flowmeter, magnetoresistive effect,
- magnetic materials (dia-, para- ja ferromagnetism, hysteresis phenomenon, hard and soft magnetic materials)
- electromagnetic induction (magnetic flux, Faraday’s law, Lenz’s law, generator, self-inductance, energy density of magnetic field, mutual inductance, eddy currents, transformer

Oscillations, damped oscillations, critical damping, resonance effect, accelerometer as a sensor of mechanical vibrations

Mechanical waves, sound, fundamentals of sound, noise, exposure limits, ultrasound, Dopplerin ilmiö mekaanisille ja sähkömagneettisille aalloille, Fourier, impedance Z for waves in reflections and transmissions


Superconductor applications, magnetic sensors, magnetic material properties, inductive sensors, accelerometer as a sensor in mechanical oscillations, damping methods for oscillations, propagation of mechanical waves in different materials,
electromagnetic induction applications, Hall- sensors

Qualifications

Basics of Mechanics and Electricity

Further information

Lectures: 28 h
Tutorials: 14 h