ASTM C1368 Slow Crack Growth Parameters of Advanced Ceramics

The ASTM C1368 test technique uses a constant stress rate to determine the slow crack growth (SCG) parameters of advance d ceramics. Flexural testing is a method of determining flexural strength as a function of the applied stress rate in a particular environment at room temperature.... Read More

  • Average 30% Cost

  • 100% Confidentiality

  • Free, No-obligation

  • 100% Customer



    ASTM C1368 determines slow crack growth parameters of ceramics by constant stress-rate flexural testing at ambient temperature. This test method provides empirical parameters for estimating ceramic materials’ relative slow crack growth (SCG) susceptibility in specific settings. It can be used to determine the effects of composition and processing factors on SCG as well as strength behavior of newly generated or existing materials, allowing for more precise customization and optimization of material processing. In summary, this test method may be used for material development, quality control, characterization, and limited design data generation purposes.

    Test Procedure:

    For ASTM C1368, the specimens are tested on their respective fixtures in specified testing setups. The fixture applies an initial load of no more than 20N to the specimen, followed by preloading,  and then load control mode. A load versus time curve is recorded for each test to determine the actual loading rate, after which the associated stress rate is determined. Fracture load is measured with a 1% accuracy. Specimens that have been broken outside of the gauge length are not used as value data points for slow crack growth (SCG) parameters.

    Specimen Size : 

    A rectangular beam specimen is used as a test specimen for ASTM C1368, which must be handled with care to avoid random and severe flaws during the test procedure. 


    In ASTM C1368, the coefficients of variation of the SCG parameter n and of the SCG parameter D is calculated as follows:  


    CVn = coefficient of variation of the SCG parameter n 

    CVD = coefficient of variation of the SCG parameter D

    SDn = standard deviation of the SCG parameter n 

    SDD = standard deviation of the SCG parameter D 

    Advanced ceramics’ strength is probabilistic in nature. As a result, SCG calculated from a  ceramic material’s flexural strengths is similarly a probabilistic occurrence.


    ASTM C1368 determines slow crack growth parameters of ceramics by constant stress-rate flexural testing at ambient temperature.


    Core Materials Testing Services


    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have already delivered 10000+ Material Test results to top companies

      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.

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd 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!!

              idea icon
              Want to connect with an expert before you leave?