ASTM C848 Test for Young’s Modulus, Shear Modulus, and Poisson’s Ratio For Ceramic Whitewares by Resonance
ASTM C848 is used to determine elastic properties (Young's Modulus, Shear Modulus, and Poisson's Ratio) for Ceramic Whitewares by Resonance.
Average 30% Cost Savings
100% Confidentiality Guarantee
Free, No-obligation Consultation
100% Customer Satisfaction
TRUSTED BY ENGINEERS FROM
ASTM C848 Test for Young’s Modulus, Shear Modulus, and Poisson’s Ratio For Ceramic Whitewares by Resonance
ASTM C848 is used to determine elastic properties (Young's Modulus, Shear Modulus, and Poisson's Ratio) for Ceramic Whitewares by Resonance.
Scope:
Specimens of ceramic whitewares possess specific mechanical resonant frequencies. Resonance frequencies depend upon the mass, elastic moduli, and geometry of the test specimen, and knowledge about these parameters helps to calculate the resonance frequency of a material. Resonance frequency values can be used to calculate elastic properties. Dynamic Young’s modulus is determined using the resonance frequency in the flexural mode of vibration. The dynamic shear modulus, or modulus of rigidity, is determined using torsional resonance vibrations. Young’s modulus and shear modulus are used to compute Poisson’s ratio. This test method is used in quality control and for determining whether a material meets specifications.
Ceramic whitewares that are elastic, isotropic, and homogeneous can be tested in ASTM C848. Cracks or voids represent inhomogeneities in the material; therefore, such materials cannot be tested with this method. Materials that cannot be prepared in a suitable geometry cannot be tested as well.
This ASTM C848 test is nondestructive. Only minute stresses are applied to the specimen. The time during which stress is applied and removed is of the order of hundreds of microseconds. A range of acceptable resonant frequencies is determined for a specimen with a particular geometry and mass. Any specimen whose frequency falls outside this range is rejected.
Test Procedure:
This ASTM C848 test method determines the elastic properties of ceramics by calculating the resonance frequency of test bars. Resonance frequencies of test specimens are determined by exciting the specimens at different frequencies to find a particular frequency that matches the specimen’s natural resonance frequency. It is a hit-and-trial method. Specimens are excited by a transducer; a transducer transforms a set electric signal into a mechanical vibration which causes a vibration in the specimen. Another transducer converts the vibration in the specimen into an electric signal that is displayed on the screen of an oscilloscope to measure resonance. The dimensions of the specimen, its resonance frequency, and its mass are used to calculate Young’s modulus and shear modulus.
Video 01: What is resonance in physics?
Specimen size:
In ASTM C848, the specimens should be either rectangular or circular in cross-section. They should have a minimum mass of 5 g to avoid coupling effects. Their surfaces should be flat, and opposite surfaces should be parallel within 0.02 mm. Recommended dimensions of the specimen are 125 by 15 by 6 mm for bars of rectangular cross-section and 125 by 10 to 12 mm for the circular cross-section.
Data:
In ASTM C848, Young modulus,shear modulus, and Poisson’s ratio of ceramic whitewares are calculated and reported.
Conclusion:
Ceramic whitewares that are elastic, isotropic, and homogeneous can be tested in ASTM C848. Cracks or voids represent inhomogeneities in the material; therefore, such materials cannot be tested with this method. Materials that cannot be prepared in a suitable geometry cannot be tested as well.
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 test is a standard test method for the analysis of sulfochromate etch solutions used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
ASTM G65 measures the resistance of metallic materials to abrasion using the dry sand/rubber wheel apparatus. The quality, durability, and toughness of the sample are determined using this test. Metallic materials are ranked in their resistance to scratching abrasion under a controlled environment.
ASTM E2141 test methods provide accelerated aging and monitoring of the performance of time-dependent electrochromic devices (ECD) integrated in insulating glass units (IGU). This test helps to understand the relative serviceability of electrochromic glazings applied on ECD.
ASTM C724 test method is used in analyzing the quality and ease of maintenance of a ceramic decoration on architectural-type glass. This test method is useful in the acknowledgment of technical standards.
Send us a request
Process for testing
STEP 01
You share material and testing requirements with us
STEP 02
You ship your sample to us or arrange for us to pick it up.
STEP 03
We deliver the test report to your email.
Just share your testing requirements and leave the rest on us!
Free, no-obligation consultation
Guaranteed confidentiality
Quick turnaround time
Hassle-free process
Let us combine our capabilities to achieve success!!