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  2. Rockwell hardness test - Wikipedia

    en.wikipedia.org/wiki/Rockwell_hardness_test

    The Rockwell test does not use any optical equipment to measure the hardness indention, rather all calculations are done within the machine to measure the indention in the specimen. [ 13 ] The equation for Rockwell hardness is H R = N − h ∗ d {\displaystyle HR=N-h*d} , where d is the depth in mm (from the zero load point), and N and h are ...

  3. Zwick Roell Group - Wikipedia

    en.wikipedia.org/wiki/Zwick_Roell_Group

    This Austrian-based company develops optical strain measurement devices, creep testing machines as well as high temperature testing systems. Indentec Hardness Testing Machines Limited : Established in 1976, Indentec manufactures Vickers, Rockwell, Brinell and Universal hardness testing machines.

  4. Hardness comparison - Wikipedia

    en.wikipedia.org/wiki/Hardness_comparison

    A variety of hardness-testing methods are available, including the Vickers, Brinell, Rockwell, Meyer and Leeb tests. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table for steels.

  5. Indentation hardness - Wikipedia

    en.wikipedia.org/wiki/Indentation_hardness

    Brinell hardness test (HB) BHN and HBW are widely used [7] Knoop hardness test (HK), for measurement over small areas, widely used to test glass or ceramic material. [8] Janka hardness test, for wood; Meyer hardness test; Rockwell hardness test (HR), principally used in the USA. HRA, HRB and HRC scales are most widely used.

  6. Rockwell International - Wikipedia

    en.wikipedia.org/wiki/Rockwell_International

    In 1956, Rockwell Manufacturing Co. bought Walker-Turner from Kearney and Trecker. In 1957, Walker-Turner operations were closed down in Plainfield, New Jersey and moved to Bellefontaine, Ohio and Tupelo, Mississippi. [6] Timken-Detroit merged in 1953 with the Standard Steel Spring Company, forming the Rockwell Spring and Axle Company. [2]

  7. Barcol hardness test - Wikipedia

    en.wikipedia.org/wiki/Barcol_hardness_test

    The governing standard for the Barcol hardness test is ASTM D 2583. [4] Barcol hardness is measured on a scale from 0 to 100 with the typical range being between 50B and 90B. A measurement of 60B is roughly equivalent to a Shore hardness of 80D or a Rockwell hardness M100.

  8. Central Institute of Road Transport - Wikipedia

    en.wikipedia.org/wiki/Central_Institute_of_Road...

    Digital Hardness Tester (Shore A) Truck, Bus Tyre Uniformity Test Machine: Rear Wall Strength Test Rig Micro Hardness Tester With Motorized stage: Dynamic Mechanical Analyser-4000 (Dma) Tyre Bursting Test: Roll Over Test Facility Rockwell Hardness Tester: Fourier Transform Infra Red Spectrometer: Dynamic Wheel Cornering Fatigue Test Machine

  9. Leeb rebound hardness test - Wikipedia

    en.wikipedia.org/wiki/Leeb_rebound_hardness_test

    The Equotip (later on also called simultaneously as Leeb method) rebound hardness test method was developed in the year 1975 by Leeb and Brandestini at Proceq SA to provide a portable hardness test for metals. It was developed as an alternative to the unwieldy and sometimes intricate traditional hardness measuring equipment.

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