ASTM E1876 PDF

Buy ASTM E Standard Test Method for Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio by Impulse Excitation of Vibration from SAI. Status: Withdrawn ยท Replaced by: ASTM E Metals — Mechanical Testing; Elevated and Low-Temperature Tests; Metallography(ASTM VOL ). Purchase your copy of ASTM E – 15 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.

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Where possible, the procedures, sample specifications and calculations are consistent with these test methods.

Historical Version s – view previous versions of standard. Link to Active This link will always route to the current Active version of the standard. The testing of these materials shall be done in compliance with these material specific standards. Afterwards, the acquired vibration signal in asym time domain is converted to the frequency domain by a fast Fourier transformation. Dynamic Young’s modulus is qstm using the resonant frequency in either the flexural or longitudinal mode of vibration.

There is no requirement for complex support systems that require elaborate setup or alignment. Dynamic Young’s modulus and dynamic shear modulus are used to compute Poisson’s ratio. The dynamic elastic properties of a material can therefore be computed if the geometry, mass, and mechanical resonant frequencies of a suitable rectangular or cylindrical geometry test specimen of that material can be measured.

Shear modulus To determine the shear modulus, the equipment measures the torsional vibration frequency see picture and calculates the shear modulus using the mass and dimensions of the sample according to the different standards ASTM E, ISOEN Specimens of these materials possess specific mechanical resonant frequencies that are determined by the elastic modulus, mass, and geometry of the test specimen.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The actual dynamic elastic modulus of each specimen need not be determined as long as the limits of the selected frequency range are known to include the resonant frequency that the specimen must possess if its geometry and mass are within specified tolerances.

Any specimen with a frequency response falling outside the prescribed frequency range is rejected. Test Methods CCCCCand C may differ from this test method in several areas for example; sample size, dimensional tolerances, sample preparation.

e186 A range of acceptable resonant frequencies is determined for a specimen with a particular geometry and mass. There is no requirement for complex support systems that require elaborate setup or alignment. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Dynamic Young’s modulus is determined using the resonant frequency in either the flexural or longitudinal mode of vibration.

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Flat plates may also be measured similarly, but the required equations for determining the moduli are not presented. Material damping or internal friction is characterized by the decay of the vibration amplitude of the sample in free vibration as the logarithmic decrement.

Dynamic Young’s modulus and dynamic shear modulus are used to compute Poisson’s ratio. Dynamic Young’s modulus and dynamic shear modulus are used to compute Poisson’s ratio. No other units of measurement are included in this standard. The impulse excitation technique IET is a non-destructive material characterization technique to determine the elastic ashm and internal friction of a material of interest.

ASTM E1876 – 15

The damping behaviour originates from anelastical processes occurring in a strained solid i. Specimens of these materials possess specific mechanical resonant frequencies that are determined by the elastic modulus, mass, and geometry of the test specimen. No other units of measurement are included in this standard. To determine the Young’s modulus, the equipment measures the flexural vibration frequency see picture and calculates the Young’s modulus using the mass and dimensions of the sample according to the different standards ASTM E, ISOEN Flat plates may also be measured similarly, but the required equations for determining the moduli are not presented.

The dynamic shear modulus, or modulus of rigidity, is found using torsional resonant vibrations. The dynamic elastic properties of a material can therefore be computed if the geometry, mass, and mechanical resonant frequencies of a suitable rectangular or cylindrical geometry test specimen of that material can be measured.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Link to Active This link will always route to the current Active version of the e18766.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

The dynamic elastic properties of a material can therefore be computed if the geometry, mass, and mechanical resonant frequencies of a suitable rectangular or cylindrical geometry test specimen of that material can be measured. Test Methods CCCCCand C may differ from this test method in several areas for example; sample size, dimensional tolerances, sample preparation. The specimens are subjected to minute strains; hence, the moduli are measured at or near the origin of the stress-strain curve, with the minimum possibility of fracture.

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Theory | IMCE – Your partner in the Impulse Excitation Technique

A range of acceptable resonant frequencies is determined for a axtm with a particular geometry and mass. Test Methods CCCCCand C may differ from this test method in several areas for example; sample size, dimensional tolerances, sample preparation. The dynamic shear modulus, or modulus of rigidity, is found using torsional resonant vibrations. Young’s modulus To determine the Young’s modulus, the equipment measures the flexural vibration frequency see picture and calculates the Young’s modulus using the mass and dimensions of the sample according to the different standards ASTM E, ISOEN Astn possible, the procedures, sample specifications and calculations are consistent with these test methods.

The ashm of these materials shall be done in compliance with these material specific standards. Active view current version of standard.

Specimens of these materials possess specific mechanical resonant frequencies that are determined by the elastic modulus, mass, and geometry of the test specimen. The actual dynamic elastic modulus of each specimen need not be determined as long as the limits of the selected frequency range are known to include the resonant frequency that the specimen must f1876 if its geometry and mass are within specified tolerances.

Specimen descriptions should include any specific thermal treatments or environmental exposures that the specimens have received. To determine the shear modulus, the equipment measures the torsional vibration frequency see picture and calculates the shear modulus using the mass and dimensions of the astmm according to the different standards ASTM E, ISOEN Dynamic Young’s modulus is determined using the resonant frequency in either the flexural or longitudinal mode of vibration.

For predefined shapes like rectangular bars, discs, rods and grinding wheels, the dedicated software calculates the sample’s elastic e176 using the sample dimensions, weight and resonant frequency ASTM E Specimen descriptions should include any specific thermal treatments or environmental exposures that the specimens have received.

No other units of awtm are included in this standard.

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