Checking date: 07/07/2020


Course: 2020/2021

Experimental Mechanics
(14217)
Study: Bachelor in Mechanical Engineering (221)


Coordinating teacher: SAN ROMAN GARCIA, JOSE LUIS

Department assigned to the subject: Department of Mechanical Engineering

Type: Electives
ECTS Credits: 3.0 ECTS

Course:
Semester:




Students are expected to have completed
MACHINE DESIGN
Competences and skills that will be acquired and learning results. Further information on this link
By the end of this subject, students will be able to have: 1.- Understand the specific technical structure and theoretical-technical bases, as well as the key concepts and aspects, of metrology. 2.- Knowledge of the fundamentals of metrology that includes the contribution to the development of this science at the forefront scientific knowledge. 3.- The ability to apply their knowledge and understanding to identify, formulate and solve design problems of a measurement chain. 4.- A systematic understanding of the different methods for calculating uncertainties of a measurement system and the ability to use them. 5.- The ability to design measurement chains and conduct experimental tests, interpret the data and draw conclusions. 6.- Workshop and laboratory skills in the testing of machines. 7.- The ability to select and use measuring equipment appropriate to the specific objectives of an experimental test. 8.- An understanding of test methods and techniques applicable in machine testing and their limitations. 9.- Function effectively as an individual and as a member of a team.
Description of contents: programme
1: Introduction 2: Measuring Systems. Concepts of Metrology " 2.1. Metrology: definitions. 2.2. Concepts and measures. 2.3. Fundamental concepts of a measurement chain. 3: "Calibratión and uncertainty. " 3.1. Introducción. 3.2. Calibration. 3.3. Uncertainty. 3.4. Results of calibration. 4: Design of a chain of measurement " 4.1. Design with a view to its maintenance. 4.2. Design with a view to their calibration. 4.3. Development of the measuring function. 5: "Experimental techniques in mechanical engineering extensometry. Application to the monitoring of fatigue tests" 5.1. MESURE OF DEFORMATION 5.1.1. Introduction 5.1.2. Electrical strain gauge 5.1.3. Types of strain gages 5.2. RECOMMENDATIONS, PROCEDURES AND CRITERIA FOR THE SELECTION OF GAGE 5.2.1 Introduction 5.2.2 Selection Parameters Banda 5.2.3. Selection Procedures Bands 5.3. SURFACE PREPARATION FOR THE ACCESSION OF GAGE 5.4. TECHNICAL GAUGES 5.4.1. Wheatstone Bridge 5.4.2. Balanced bridge 5.4.3. Calibration 5.4.4. Setting the active branches 5.4.5. Determination of the principal stresses 5.4.6. Temperature compensation Item 6: "Experimental techniques in mechanical engineering: Photoelasticity." 6.1. Photoelasticity 6.1.1. Dimensional elasticity in Cartesian coordinates 6.1.1.1. Plane strain state 6.1.1.2. Curves representative of a plane elastic state: Isostatic Isoclines Isochromatic 6.1.2. Theory of Photoelasticity 6.2. INTRODUCTION TO THE STRESS ANALYSIS METHOD PHOTOSTRESS Practice No. 1: Experimental methods in mechanical engineering. Determination by gage techniques, stress and strain in mechanical. " Practice No. 2: Experimental methods in mechanical engineering. Determination by photoelastic techniques, stress and strain in mechanical. "
Learning activities and methodology
Lectures, classroom exercises and / or laboratories and individual work.
Assessment System
  • % end-of-term-examination 50
  • % of continuous assessment (assigments, laboratory, practicals...) 50
Basic Bibliography
  • JCGM 106. Evaluation of measurement data ¿ The role of measurement uncertainty in conformity assessment. Joint Committee for Guides in Metrology. 2012
  • Karl Hoffmann. An Introduction to Measurements using Strain Gages. Hottinger Baldwin Messtechnik GmbH. 1989

The course syllabus and the academic weekly planning may change due academic events or other reasons.