Pneumatics and Hydraulics

Not available.

Theoretical lectures: theoretical concepts concerning each subject are explained to the students.

Theoretical-practical lectures: theoretical concepts associated with the resolution of theoretical-practical exercises resorting to several didactic components.

Practical lectures: practical didactic exercises made to exemplify some practical applications.

With this course unit it is intended that the trainee is able to:

Know the physical principles that govern the operation of pneumatic and oil-hydraulic systems, associated mathematical laws and physical quantities and respective units of measurement; Know the advantages and limitations of using pneumatic and oil-hydraulic energies; Read, interpret, and execute pneumatic and oil-hydraulic circuits/systems, using standardized symbology; Identify and know the constructive and functional principles of the constituent elements of pneumatic and oil-hydraulic circuits/systems; Consult and interpret technical information from pneumatic and oil-hydraulic equipment manufacturers’ catalogs; Carry out the assembly of pneumatic and oil-hydraulic circuits/systems, interconnecting the different elements. Know how to assemble pneumatic and oil-hydraulic circuits/systems, interconnecting the different elements. Know how to consult and interpret information.

Pneumatics:

– Principles and physical quantities associated with pneumatic systems;
– Production, treatment, storage, and distribution of compressed air: compressors, filter, lubricator, pressure regulator, dryer, tanks, and distribution networks;
– Pneumatic components: cylinders, directional valves, pressure valves, flow control valves, logic valves, pneumatic timer;
– Representation of pneumatic systems/circuits: structure of a pneumatic circuit; standard symbology;
– Practical assembly and simulation of pneumatic circuits;

Oil-hydraulics:

– Principles and physical quantities associated with oil-hydraulic systems: principles of hydraulic and Pascal lever, continuity and Bernoulli equations, load losses;
– Oil-hydraulic components: cylinders and motors, directional valves, pressure valves, flow control valves, and non-return valves;
– Representation of oil-hydraulic systems/circuits: structure of a pneumatic circuit, standard symbology;
– Assembly and practical simulation of oil-hydraulic circuits.

The assessment comprises two components.

a) Assessment of component 1: done by continuous assessment or by final examination. When done by continuous assessment, it corresponds to two written tests (with theoretical and theoretical-practical parts), one in the middle and the other at the end of the semester, to be done in theoretical and theoretical-practical lectures. Assessment conditioned to the minimum of 75% of attendance in the set of theoretical, theoretical-practical, and practical-laboratory lectures, already elapsed until the date of each test. Tests have a maximum duration of 120 minutes (30 minutes for the theoretical part and 90 minutes for the theoretical-practical part) and are quoted for 20 points (the theoretical part is worth 8 points and the theoretical-practical 12 points).

Alternatively, continuous assessment can be replaced by final exams.
Final exams have a maximum duration of 150 minutes and are quoted for 20 points (8 points for the theoretical part and 12 points for the theoretical-practical).

b) Assessment of component 2: corresponds to the evaluation of practical-laboratory lectures. In case of failure in this "Practical-Laboratory Assessment Component", an additional test must be done, but only in the normal period of exams.
Approval conditioned to a final average equal or superior to 9.5 points (ranging from 0-20 points) and also to:
a) a minimum of 75% attendance of theoretical and theoretical-practical and practical-laboratory lectures, if the student is not covered by any exception provided for by the law.
b) a minimum of 9.5 points in the average of the classifications of the two tests or in the final exam.
c) a classification equal to or greater than 7.5 points in the two tests and/or evaluation tests.
d) an average classification of not less than 9.5 points in Component 2 of the evaluation (practical-laboratory part).

Final classification = 0.70 * A + 0.30 * B, where:
A - Classification in the assessment of component 1; B - Classification in the assessment of component 2.

The use of bibliographic elements and electronic devices is not allowed during tests/exams.

NAO