By rowanjenkins | Last updated 1st May 2024

ASTM C848 Standard Test Method for Young’s Modulus, Shear Modulus, and Poisson’s Ratio for Ceramic Whitewares by Resonance

The elastic characteristics of ceramic whiteware materials are determined using this test procedure. These materials' specimens have distinct mechanical resonance frequencies that are determined by the test specimen's density, shape, and elastic moduli. Using the resonance frequency in the flexural mode of vibration, one can calculate Young's modulus. To find the shear modulus, also known as the modulus of rigidity, one uses vibrations of torsional resonance. Poisson's ratio, or the factor of lateral contraction, is calculated using Young's modulus and shear modulus.

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    Introduction to ASTM C848

    In comparison to static loading systems, ASTM C848 has some advantages when measuring ceramic whiteware. The specimen is subjected to very small forces, which reduces the likelihood of breakage. Because the stress application and removal times are on the order of hundreds of microseconds, measurements at temperatures where delayed elastic and creep effects occur on a significantly shorter time scale are possible. MaTestLab is one of the best testing service providers, with the best network of testing laboratories in the USA to carry out ASTM C848 tests for our clients.
    If one takes note of one crucial fact—ceramic whiteware materials are sensitive to heat history— ASTM C848 can be used to determine whether a material satisfies criteria. 

    ASTM C848 Test Method

    Mechanical ExcitationA transducer is used to deliver mechanical excitation of the specimen by converting an initial electrical signal into a mechanical vibration.
    Resonance DetectionThe subsequent mechanical vibrations of the specimen are detected by another transducer, which then converts them into an electrical signal that can be seen on an oscilloscope screen to identify resonance.
    Young’s modulus and shear modulus are computed using the specimen’s size, mass, and resonance frequencies.

    ASTM C848 Test Specimens

    Specimen DetailThe preparation of the specimens should be done so that their cross sections are either round or rectangular. Young’s modulus and shear modulus can be measured using either of the two geometries.
    Specimen SizeIt is recommended that bars with a rectangular cross-section measure 125 by 15 by 6 mm, whereas bars with a circular cross-section measure 125 by 10 to 12 mm. 

    ASTM C848 Test Result

    The ASTM C848 standard calculates and reports the ceramic whiteware’s Young modulus, shear modulus, and Poisson’s ratio. ASTM C848 is used to test homogenous, isotropic, and elastic ceramic whiteware. Since voids and cracks indicate inhomogeneities in the material, these materials cannot be examined using this technique. It is not possible to test materials that cannot be formed in an appropriate geometry.

    ASTM C848 Related Tests

    ASTM C848 is related to tests, including ASTM C1259 for testing Young’s and Sheer Modulus for advanced ceramics.

    FAQ's

    Where can I get the astm c848 tested?

    You can share your astm c848 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c848 test to various testing techniques.

    How much do I need to pay for the astm c848 test?

    Please contact us for a detailed quote for your astm c848 testing needs. Cost incurred to carry out different astm c848 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.

    How many samples are required for astm c848?

    The required number of samples or specimens should comply with the procedure given in the astm c848 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.

    How much discount can I get on the astm c848 test?

    MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.

    How many days will it take to complete the astm c848 test?

    The turnaround time for astm c848 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.

    Where can I get the astm c848 tested?

    You can share your astm c848 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c848 test to various testing techniques.

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