Vibration measurement services

Custom services on demand

My offer: Gaining quickly your needed measurement data by expertise and innovative measurement technology

- global on-site service -

Vibrations affect the durability, comfort and functional performance of products and processes. With adequate measuring technology and enough "manpower", vibration phenomena can be recorded and structural improvements can be derived from measurement data analysis. When your own resources or measuring equipment may not be sufficient to cope with the upcoming vibration measurements challenges.

In this case, I am happy to assist you as a competent service provider with the latest vibration measurement technology and expertise and help you to implement the desired measurement services as soon as possible. Efficient and customer-oriented vibration measurements services - paired with conventional and modern optical measurement technology (such as a single-point laser vibrometer, scanning laser vibrometer) - are my strengths.

Vibration measurement services overview

The following graphic gives you a basic impression of the offered vibration measurement services. Further details on the individual topics can be found below on this information page.

Finida Messtechnik offers custom measurement services to make vibrations visible for research, development and production. My engineering services include measurement services, feasibility studies, functional tests, operational deflection shape analysis and experimental modal analysis as well as studies for the vibro-acoustic quality testing in production and goods inward inspection. The rental of measurement technology such as Laser-Doppler-Vibrometers as well as consulting and training are also part of my service portfolio.

What makes us special?

  • Customer-oriented and professionally implemented vibration measurement services
  • Use of the latest measurement technology (e.g. optical laser scanning vibrometry and conventional accelerometers)
  • Efficient project processing
  • Direct communication channels

Detailed presentation of my vibration measurement services

How can I support you?

Features of vibrations measurement services

  • Contact or non-contact measurement techniques
  • Uniaxial (1d, out-of-plane or in-plane), triaxial (3d => out-of-plane AND in-plane vibration)
  • Single point and multi-point (full field measurments with up to 260.000 measurement points)
  • Stationary and transient vibration conditions
  • Object size from micro (µm²) to macro (m²)
  • Frequency range from 0 Hz up to 2,4 GHz
  • Working distance from 0 cm up to 300 m
  • Measurement in hazardous areas such as high voltage, explosion-protected, high temperatures, e.g.

Full field vibration measurement -
experimental modal analysis (EMA) and operational deflection shapes (ODS)

  • Operational Deflection Shape (ODS) Analysis
    • Of self-excited or externally excited systems
    • Identification of resonance frequencies and the associated operational deflection shapes
  • Experimantal Modal Analysis (EMA)
    • Excitation using an automated modal hammer or shaker
    • Acquisition of the transmission functions (FRF)
    • Extraction of the modal parameters (natural frequency, natural mode, modal damping) from the transfer functions
    • Export of data for further processing in CAE / FEM programs for model validation
  • What measurements are possible?
    • Object size: from micro (µm²) to macro (m²)
    • Frequency range: 0 Hz to 2.4 GHz
    • Working distance: 0 cm to 300 m
    • Even on hot (red glowing) structures
    • And on rotating objects

Operational deflection shape analysis of an electric shaver. The shaving head and housing were measured using a scanning laser vibrometer.

Full field vibration analysis of an ultrasonic sonotrode measured with scanning laser vibrometer.

Determine resonance frequencies

  • Of self-excited or externally excited systems
  • Identification of resonance frequencies including the associated amplitudes and damping
Vibro-acoustic quality inspection of components represented in an FFT spectrum. The test specimens are excited to vibrate by hammer excitation and measured using a laser vibrometer or accelerometer. This process is also called acoustic quality control, sound testing and resonance testing.

Vibration measurement on rotating structures

  • Optical detection of torsional vibrations
  • Run-up measurements
  • Order analysis
  • Creation of start-up diagrams from existing measurement data
  • Drive-train testing on dynamometers (roller test benches)
For run-ups, order analysis and waterfall diagrams, rotational vibrometers measure torsional and rotational vibrations without contact and without intervention in the drivetrain. Finida Messtechnik offers measurements with rotational laser Vibrometers as measurement services and contract measurements.

Torsional vibrations in the drive train measured contactless with a rotating laser vibrometer.

Extreme dynamic movements with high-velocity

  • Ultrasonic vibrations
  • Opening and closing processes (e.g. valve train)
  • Contact bouncing
  • Determination of resonance frequencies
  • Detection of the maximum speed in short-term dynamic processes such as crash, impact and tension test
  • Checking specified properties such as maximum stroke (displacement) or maximum deflection and speed
  • Typical applications, e.g. valves, piezo injectors, parking brake, cylinders, pistons, tension testing, etc.
  • Acquisition in time or FFT domain
The vibro-acoustic quality control (also called acoustical quality control) is an important part of end-of-line testing to assess the function and quality of products. Methods such as sound testing and resonance testing enable the detection of GOOD and BAD parts by detecting the vibrations of the product. The graphic shows the vibrations of two components of different quality measured with a laser vibrometer in the time domain.

Highly dynamic movements with accelerations up to 9,600,000 g can be recorded by laser vibrometers. Even high vibration speeds of up to 40 metres per second can be measured.

Functional tests

  • Precise recording of displacement over time / velocity over time / acceleration over time
  • Verification of specifications like maximum displacement/magnitude/deflection
  • For incoming Inspection of supplier parts
  • For outgoing inspection of own produced or processed products

Operational deflection shape of an electric toothbrush. A vibration shape including a profile cut is shown. The measurement was done with a scanning laser vibrometer.

Acoustic quality inspection in production

Laser Vibrometers measure vibrations of haptic force feedback systems optically without contacting the surface, so no mass-loading occurs. This pictures shows vibration measurement data of a mobile phone, which has four different intensities of vibration levels. The haptic force feedback is shown in a graph vibration displacement over time. A vibro-acoustic quality control using vibration measurement (e.g. Laser-Doppler-Vibrometer) can ensure the quality of haptic feedback systems.

With a single-point laser vibrometer, the vibrations could be measured contactlessly and reproducibly.

Rental of a laser vibrometers for contactless detection of vibrations and dynamic movements

In addition to renting, I can also provide trainings on using laser vibrometers to train users in practical use of laser vibrometer. This can take place either at your location or via an online meeting.

  • Single-point laser vibrometer
  • Fiber optic laser vibrometer
  • Scanning Laser Vibrometer (1d and 3d)
  • Rotation laser vibrometer
  • In-Plane Laser Vibrometer
  • Special laser vibrometer
  • Microscope laser vibrometer
  • Optional: Training and instruction in the correct operation of the corresponding laser vibrometer. On-site or (depending on the vibrometer type and distance) also online training
Schwingungen messen Sie optisch und berührungslos mit einem Scanning Vibrometer PSV-500. Eingesetzt werden Scanning Vibrometer für die experimentelle Modalanalyse und Betriebsschwingformanalyse

Scanning laser vibrometers can be used to examine the three dimensional vibration behavior even of complex objects - optically without contact and with high precision.

Example of measurement data: Modal analysis of an entire vehicle

Experimental Modal Analysis (EMA) of a car measured with a 3d PSV Scanning Vibrometer to validate simulation data and optimize NVH behaviour – first mode shape
Experimental Modal Analysis (EMA) of a car measured with a 3d PSV Scanning Vibrometer to validate simulation data and optimize NVH behaviour – second mode shape.

My vibration measurement services support you in following topics ...

  • Structural dynamic design of parts and components
  • Vibration phenomena from the thematic complex Noise, Vibration, Harshness (short: NVH, translated: "Noise, Vibration, Roughness")
  • Acoustic optimization and sound design of exciting and stimulable structures
  • Validation of simulation models with experimentally obtained measurement data
  • Experimental determination of material parameters (e.g. damping)
  • Design and optimization of ultrasonic transducers and ultrasonic tools
  • Maximizing the service life of rotating machines and systems with superimposed torsional vibrations (e.g. motor, gear, machine tools
  • Effective vibration damping by demonstrating the full field vibration (deflection shapes)
  • Reduction of wear and tear caused by vibrations
  • Evidence of specifications such as special vibration profiles with required displacement, velocity or acceleration

Please send your request to:

info@finida.de

contact form

+49 (0)7223 9423418