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  2. Wear coefficient - Wikipedia

    en.wikipedia.org/wiki/Wear_coefficient

    The wear rate per unit sliding distance in the transient wear regime decreases until it has reached a constant value in the steady-state wear regime. Hence the standard wear coefficient value obtained from a volume loss versus distance curve is a function of the sliding distance.

  3. Wear - Wikipedia

    en.wikipedia.org/wiki/Wear

    The wear coefficient is a physical coefficient used to measure, characterize and correlate the wear of materials. Lubricant analysis ... Statistics; Cookie statement;

  4. Archard equation - Wikipedia

    en.wikipedia.org/wiki/Archard_equation

    The Archard wear equation is a simple model used to describe sliding wear and is based on the theory of asperity contact. The Archard equation was developed much later than Reye's hypothesis [] (sometimes also known as energy dissipative hypothesis), though both came to the same physical conclusions, that the volume of the removed debris due to wear is proportional to the work done by friction ...

  5. Abrasion (mechanical) - Wikipedia

    en.wikipedia.org/wiki/Abrasion_(mechanical)

    The Archard equation is a simple model used to describe sliding wear and is based on the theory of asperity contact. [1] = where: Q is the total volume of wear debris produced K is the wear coefficient W is the total normal load L is the sliding distance H is the hardness of the softest contacting surfaces

  6. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    For any ⁠ ⁠, the coefficient of ⁠ /! ⁠ in the moment generating function (expressed as an exponential power series in ⁠ ⁠) is the normal distribution's expected value ⁠ [] ⁠. The cumulant generating function is the logarithm of the moment generating function, namely

  7. Effect size - Wikipedia

    en.wikipedia.org/wiki/Effect_size

    In statistics, an effect size is a value measuring the strength of the relationship between two variables in a population, or a sample-based estimate of that quantity. It can refer to the value of a statistic calculated from a sample of data, the value of one parameter for a hypothetical population, or to the equation that operationalizes how statistics or parameters lead to the effect size ...

  8. CHART #4: SIDE-BY-SIDE COMPARISON OF REPUBLICAN CANDIDATES ...

    images.huffingtonpost.com/2007-07-09-blumenthal...

    CHART #4: SIDE-BY-SIDE COMPARISON OF REPUBLICAN CANDIDATESÕ HEALTH PLANS By Susan J. Blumenthal, M.D., Jessica B. Rubin, Michelle E. Treseler, Jefferson Lin, and David Mattos*

  9. Accelerated life testing - Wikipedia

    en.wikipedia.org/wiki/Accelerated_life_testing

    Accelerated life testing is the process of testing a product by subjecting it to conditions (stress, strain, temperatures, voltage, vibration rate, pressure etc.) in excess of its normal service parameters in an effort to uncover faults and potential modes of failure in a short amount of time.