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Experimental modal analysis

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Preview this course

Experimental modal analysis

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    Engineering Academy

    Engineering Academy

    Learn Without Limits: Free Engineering Courses

  • Course type

    Watch to learn anytime

  • Course duration

    1577 Min

  • Course start date & time

    Access anytime

  • Language

    English

Why enroll

Participants join Experimental Modal Analysis programs to develop a strong practical understanding of structural dynamics and vibration behavior through hands-on testing and data interpretation. The course enables learners to accurately identify natural frequencies, mode shapes, and damping characteristics of real structures, which are essential for diagnosing vibration problems and improving dynamic performance.

By joining, participants gain exposure to industry-standard experimental techniques, including impact hammer testing, shaker excitation, sensor placement, and frequency response function (FRF) analysis. The program helps bridge the gap between theoretical vibration concepts and real-world applications, enhancing the ability to validate and update analytical and finite element models.

Additionally, participants benefit from learning how experimental modal analysis supports noise and vibration reduction, design optimization, and structural health assessment. These skills are highly valued in sectors such as automotive, aerospace, civil structures, and machinery design, making the course particularly beneficial for engineers, researchers, and postgraduate students seeking practical expertise in advanced vibration analysis.

Opportunities that awaits you!

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Course content

The course is readily available, allowing learners to start and complete it at their own pace.

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Experimental modal analysis

30 Lectures

1577 min

  • Lesson icon

    Introduction video of Modal analysis course

    Preview icon

    Preview

    4 min

  • Lesson icon

    Introduction

    Preview icon

    Preview

    72 min

  • Lesson icon

    Lumped parameter models of Vibrating systems

    55 min

  • Lesson icon

    SDOF Undamped system

    68 min

  • Lesson icon

    SDOF system with Viscous damping

    84 min

  • Lesson icon

    SDOF system with Structural damping

    43 min

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    Modal analysis of MDOF Undamped system (Free vibration)

    69 min

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    Modal analysis of MDOF Undamped system (Forced vibration)

    77 min

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    Modal analysis of MDOF system with Structural damping

    67 min

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    Modal analysis of MDOF system with Proportional Viscous damping

    61 min

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    Modal analysis of MDOF system with Non-proportional Viscous damping

    66 min

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    IRF and Transient resposne

    67 min

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    FRF Characteristics of SDOF systems

    52 min

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    FRF Characteristics of MDOF systems

    64 min

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    Fourier series expansion

    60 min

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    Fourier Transform

    30 min

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    Discrete Fourier Series (DFS)

    52 min

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    Discrete Fourier Transform (DFT), DTFT, FFT

    49 min

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    Aliasing, Quantization

    68 min

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    Windowing, Leakage, Window functions

    68 min

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    Principle of Experimental Modal Analysis (EMA)

    22 min

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    Excitation using an impact hammer

    43 min

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    Response measurement, piezoelectric accelerometer

    75 min

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    FRF estimation, H1 and H2, Coherence function

    51 min

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    Test planning for FRF Measurement

    59 min

  • Lesson icon

    FRF Measurement with an Impact hammer

    27 min

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    Excitation using a Shaker

    52 min

  • Lesson icon

    FRF estimation with random excitation

    28 min

  • Lesson icon

    FRF measurement with random excitation

    14 min

  • Lesson icon

    FRF measurement using Pseudo, Periodic and Burst random and sine chirp excitations

    30 min

Course details

Experimental Modal Analysis (EMA) is a systematic and widely used vibration analysis technique employed to determine the dynamic characteristics of a physical structure through experimental testing. The primary objective of EMA is to identify a structure’s modal parameters—namely natural frequencies, mode shapes, and damping ratios—by measuring its response to controlled external excitation. These parameters are fundamental for understanding how a structure behaves under dynamic loading and for predicting its vibration and noise performance.

In experimental modal analysis, the test structure is excited using known input forces, typically applied through impact hammers, electrodynamic shakers, or hydraulic actuators. The resulting vibration response is measured at selected locations using sensors such as accelerometers, velocity transducers, or laser vibrometers. The input–output data are then processed using signal analysis techniques, including Fast Fourier Transform (FFT) and frequency response functions (FRFs), to extract the modal parameters of the system.

EMA is particularly valuable for validating analytical and numerical models, such as finite element models, by comparing experimentally obtained modal data with predicted results. It helps engineers identify discrepancies caused by modeling assumptions, boundary conditions, or material property variations. The technique is also extensively used in design optimization, structural modification, fault detection, and troubleshooting of vibration-related issues.

Applications of experimental modal analysis span a wide range of engineering fields, including mechanical, aerospace, civil, and automotive engineering. It is commonly applied to structures such as machine tools, automotive components, aircraft structures, bridges, and electronic assemblies. By providing accurate insight into real-world dynamic behavior, experimental modal analysis plays a critical role in improving structural reliability, performance, and durability under dynamic operating conditions.

source: NPTEL[youtube]

Course suitable for

  • Mechanics & Turbomachinery
  • Mechanical
  • Production

Key topics covered

  • introduction to experimental modal analysis

  • SDOF system with structural damping

  • modal analysis of MDOF system with proportional viscous damping

  • IRF and transient response

  • fourier transform

  • test planning for FRF measurement

Why people choose EveryEng

Industry-aligned courses, expert training, hands-on learning, recognized certifications, and job opportunities—all in a flexible and supportive environment.

Engineering Academy

Engineering Academy

Learn Without Limits: Free Engineering Courses

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