About: Impulse excitation technique

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The impulse excitation technique (IET) is a non-destructive material characterization technique to determine the elastic properties and internal friction of a material of interest. It measures the resonant frequencies in order to calculate the Young's modulus, shear modulus, Poisson's ratio and internal friction of predefined shapes like rectangular bars, cylindrical rods and disc shaped samples. The measurements can be performed at room temperature or at elevated temperatures (up to 1700 °C) under different atmospheres.

Attributes	Values
rdf:type	software
rdfs:label	Impulserregungstechnik (de) Impulse excitation technique (en)
rdfs:comment	Die Impulserregungstechnik ist eine Methode zur zerstörungsfreien Bestimmung elastischer Materialeigenschaften. Ein zu messender Prüfling wird zerstörungsfrei und durch einmaligen elastischen Stoß in einer definierten Schwingung erregt. Das Schwingungssignal wird durch ein geeignetes Medium aufgenommen und analysiert. Ein speziell für diese Methode entwickeltes Messgerät analysiert die Schwingung und zeigt die Frequenz der gezielt erregten Schwingung an. Form und Größe des Prüflings sind theoretisch keine Grenzen gesetzt, solange der Prüfling reproduzierbar in der gewünschten Schwingung zu erregen ist. (de) The impulse excitation technique (IET) is a non-destructive material characterization technique to determine the elastic properties and internal friction of a material of interest. It measures the resonant frequencies in order to calculate the Young's modulus, shear modulus, Poisson's ratio and internal friction of predefined shapes like rectangular bars, cylindrical rods and disc shaped samples. The measurements can be performed at room temperature or at elevated temperatures (up to 1700 °C) under different atmospheres. (en)
foaf:depiction
dcterms:subject	Continuum mechanics Quality control Materials science Nondestructive testing
Wikipage page ID	13578878 (xsd:integer)
Wikipage revision ID	1122168414 (xsd:integer)
Link from a Wikipage to another Wikipage	Young's modulus Hooke's law Orthotropic material Poisson's ratio Friction Fundamental frequency Piezoelectric sensor Continuum mechanics Dislocation Laser Doppler vibrometer Finite element method in structural mechanics Fast Fourier transform Four-point flexural test Quality control Refractory Isotropic Isotropy Quality control Accelerometer Materials science Nondestructive testing Torsion (mechanics) Microphone Natural frequency Ceramic engineering Shear modulus Euler–Bernoulli beam theory Flexure Nanoindentation Poisson’s ratio Young’s modulus dbr:Ultrasound_spectroscopy
Link from a Wikipage to an external page	http://webstore.ansi.org/RecordDetail.aspx%3Fsku=DIN+EN+843-2:2007 http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm%3Fcsnumber=37670 https://www.astm.org/Standards/E1876.htm
sameAs	Impulse excitation technique Impulse excitation technique Impulse excitation technique Impulse excitation technique Impulse excitation technique
dbp:wikiPageUsesTemplate	dbt:Clear dbt:Reflist dbt:Short_description
thumbnail	wiki-commons:Special:FilePath/Mechanic_excitation_flexure.jpg?width=300
has abstract	Die Impulserregungstechnik ist eine Methode zur zerstörungsfreien Bestimmung elastischer Materialeigenschaften. Ein zu messender Prüfling wird zerstörungsfrei und durch einmaligen elastischen Stoß in einer definierten Schwingung erregt. Das Schwingungssignal wird durch ein geeignetes Medium aufgenommen und analysiert. Ein speziell für diese Methode entwickeltes Messgerät analysiert die Schwingung und zeigt die Frequenz der gezielt erregten Schwingung an. Form und Größe des Prüflings sind theoretisch keine Grenzen gesetzt, solange der Prüfling reproduzierbar in der gewünschten Schwingung zu erregen ist. (de) The impulse excitation technique (IET) is a non-destructive material characterization technique to determine the elastic properties and internal friction of a material of interest. It measures the resonant frequencies in order to calculate the Young's modulus, shear modulus, Poisson's ratio and internal friction of predefined shapes like rectangular bars, cylindrical rods and disc shaped samples. The measurements can be performed at room temperature or at elevated temperatures (up to 1700 °C) under different atmospheres. The measurement principle is based on tapping the sample with a small projectile and recording the induced vibration signal with a piezoelectric sensor, microphone, laser vibrometer or accelerometer. To optimize the results a microphone or a laser vibrometer can be used as there is no contact between the test-piece and the sensor. Laser vibrometers are preferred to measure signals in vacuum. Afterwards, the acquired vibration signal in the time domain is converted to the frequency domain by a fast Fourier transformation. Dedicated software will determine the resonant frequency with high accuracy to calculate the elastic properties based on the classical beam theory. (en)
gold:hypernym	Method
prov:wasDerivedFrom	wikipedia-en:Impulse_excitation_technique?oldid=1122168414&ns=0
page length (characters) of wiki page	20920 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Impulse_excitation_technique
is Link from a Wikipage to another Wikipage of	Elastic modulus Young's modulus Characterization (materials science) Measuring instrument Poisson's ratio Nuclear graphite Shear modulus IET Thermal shock Nondestructive testing
is Wikipage disambiguates of	IET
is foaf:primaryTopic of	wikipedia-en:Impulse_excitation_technique

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