338-0323/02 – Technical Diagnostics and Reliability of Hydraulic Mechanisms (TDaSHM)
Gurantor department | Department of Hydromechanics and Hydraulic Equipment | Credits | 5 |
Subject guarantor | doc. Dr. Ing. Lumír Hružík | Subject version guarantor | doc. Dr. Ing. Lumír Hružík |
Study level | undergraduate or graduate | Requirement | Compulsory |
Year | 3 | Semester | summer |
| | Study language | Czech |
Year of introduction | 2012/2013 | Year of cancellation | |
Intended for the faculties | FS | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
To acquaint students with the basic concepts of technical diagnostics and basic diagnostic methods. To acquaint students with problems of reliability of hydraulic components and equipment. To acquaint students with the sensors and measuring instruments in the technical diagnostics of hydraulic components and equipment and the problems of technical diagnostics of hydraulic components and equipment. To acquire experience in practical measurement and diagnostics of hydraulic components and equipment. To learn to work with measurement and diagnostic system M 5000 Hydrotechnik.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Other activities
Summary
Study of the subject will provide knowledge from field of the diagnostics of hydraulic components and equipment with a sight on free of disassembly diagnostics. Parametric, vibrodiagnostic, tribotechnical and thermodynamic diagnostic methods of technical diagnostics are discussed. There are considered problems of reliability of hydraulic components and systems in the subject. There are described the instruments of technical diagnostics in terms of subject. Physical principles and metrological characteristics of sensors including the requirements on the sensors are given. There are described the sensors of diagnostic variables: pressure, flow, temperature, trajectory, speed, acceleration, force, moment, revolutions, noise and vibration. The basic diagnostic measurements of hydraulic and pneumatic components (hydro-generators, rotary hydro-motors, linear hydro-motors, compressors, pneumomotors, pressure valves, distributors and other flow elements) and systems are discussed. The subject also deals with operation simulation and monitoring of machines.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Credit: max 35, min 18 points – 5 measurement protocols
Exam: oral - 2 questions (50 points) + defense of protocols (15 points)
E-learning
Other requirements
There are no additional requirements for the student.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1 Significance of technical diagnostics. Diagnostic parameters. Methods of technical diagnostics: parametric methods. Tribodiagnostics.
2 Methods of technical diagnostics: Vibrodiagnostics, vibroacoustic diagnostics. Thermodynamic method.
3 Reliability of hydraulic elements and equipment. Reliability evaluation. Reliability indicators R(t), F(t), f(t), lambda(t).
4 Failures and their classification. Trouble-free operation of systems. Backup. Standby and means of achieving of high standby of technical means.
5 Reliability tests. Accelerated tests with increased parameters. Accelerated cycling test. Accelerated test with artificial liquid contamination.
6 Means of technical diagnostics: distribution. Sensors of quantities: basic principles, requirements, metrological characteristics. Sensors of diagnostic quantities: pressure, flow.
7 Sensors of diagnostic quantities: temperature, trajectory, velocity, acceleration, force, torque.
8 Sensors of speed, noise and vibration. Calibration of sensors.
9 Diagnostics of hydraulic pumps, rotary and linear hydraulic motors, pressure valves, directional valves and other flow elements. Diagnostics of hydraulic systems.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction