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Contents

Welcome to ME034044 - Introduction to Experimental Methods

Course description

The course has two slightly overlapping parts. The first includes lecture and tutorial classes aimed at teaching the basic knowledge required for designing an experimental system, planning an experimental program, and analyzing experimental results. A good understanding of this part is crucial for succeeding in the second part. The second part is focused on projects, in which students are required to design (not to build) a complete experimental system, including all details. The project assignments will describe a mechanical phenomenon to be tested, based on which students will have to define the requirements from the experimental system and its components. Then, students will have to choose appropriate sensors and to design the system and the experimental campaign. During the second part, several pre-schedueld guidance meetings.

Course Staff and administration

Lecturer: Asst. Prof. Shmuel Osovski, Dan Kahn Bldg. 404

Teaching Assistants: Will be announced soon.

Lecture notes: This document will be periodically updated prior to the lectures.

Announcments: Moodle course website.

Assignments submission: Moodle course website.

Attendance

Attendance in all course hours, as listed in the table below, is mandatory. This includes all lectures, tutorials, guidance meetings, and project presentation meetings. Students who have a serious problem preventing them from attending class should discuss it in advance with the lecturer, by email.

Assignments and grading

The final grade will be combined of:

• Homework assignments - A total of 3 homework assignment will be given in the first 7 weeks of the semester. Each assignment will contribute 10% towards the final grade. All assignments are mandatory and will be distributed via moodle.

• Firt project presentation: 35% (mandatory). Projects will be held by groups of 2-3 students.

• Second project presentation: 35% (mandatory). Projects will be held by groups of 2-3 students.

Important dates

• 24.03.2021 - First Lecture

• 07.04.2021 - Homework assignment #1.

• 28.04.2021 - Homework assignment #2 and projects assignment.

• 19.05.2021 - Homework assignment #3.

• 02.06.2021 - First project presentation.

• 23.06.2021 - Seond project presentation.

Books

1. R.S.Figliola, D.E. Beasley, Theory and Design for Mechanical Measurements, John Wiley & Sons.

2. J.P. Holman, Experimental Methods for Engineers, 7th ed., McGraw-Hill, 2001

3. On-line resources will be announced soon.

Table of Contents

A. Basic Concepts

• 1. The Generalized Measurement system
• 2. The Test Plan #1
• 3. Know Thy System
• 4. Uncertainties and Error Propagation

B. Characteristics of Signals

• 1. Basic Concepts of Signals
• 2. Sampling
• 3. Analog vs Digital
• 4. Introduction to Signal Analysis

C. Dynamic response of sensors

• 1. Zero-Order systems
• 2. First-Order systems
• 3. Second-Order systems

D. Waves and vibrations

• 1. Spring-Mass Vibrations
• 2. Stress Waves in Solids
• 3. Linear Vibrations
• 4. Vibrations in Beams

E. Commonly used sensors and methods

• 1. Strain Measurments
• 2. Force Measurments
• 3. Temperature Measurments
• 4. Flow and and Pressure Measurments

F. Reporting

• 1. Know Thy System #2
• 2. Analysis of Experimental Measurments
• 3. Model Estimation

G. Design of Experiments

• 1. Basic Concepts of DOE
• 2. Interactions
• 3. Methodology Matters
• 4. Screening Experiments
• 5. Facorial Design of Experiments
• 6. Other Classes of Experimental Designs

1. The Generalized Measurement system