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  2. Proctor compaction test - Wikipedia

    en.wikipedia.org/wiki/Proctor_compaction_test

    The Proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density. The test is named in honor of Ralph Roscoe Proctor [ de ] , who in 1933 showed that the dry density of a soil for a given compactive effort depends ...

  3. Soil compaction - Wikipedia

    en.wikipedia.org/wiki/Soil_compaction

    Soil compactors are used to perform test methods which cover laboratory compaction methods used to determine the relationship between molding water content and dry unit weight of soils. Soil placed as engineering fill is compacted to a dense state to obtain satisfactory engineering properties such as, shear strength, compressibility, or ...

  4. Launch vehicle system tests - Wikipedia

    en.wikipedia.org/wiki/Launch_vehicle_system_tests

    Both were explicitly booked as wet dress rehearsals, but with the option to proceed to a static fire test. The second wet dress rehearsal on 24 January 2018 led to a full 12-second static fire test of the 27 engines of the Falcon Heavy — a much longer static fire test than the typical 3–7 second duration tests SpaceX uses for the Falcon 9.

  5. Compressive strength - Wikipedia

    en.wikipedia.org/wiki/Compressive_strength

    In mechanics, compressive strength (or compression strength) is the capacity of a material or structure to withstand loads tending to reduce size (compression). It is opposed to tensile strength which withstands loads tending to elongate, resisting tension (being pulled apart).

  6. Triaxial shear test - Wikipedia

    en.wikipedia.org/wiki/Triaxial_shear_test

    In a 'consolidated drained' test, the sample is consolidated and sheared in compression slowly to allow pore pressures built up by the shearing to dissipate. The rate of axial deformation is kept constant, i.e., strain is controlled. The test allows the sample and the pore pressures to fully consolidate (i.e., adjust) to the surrounding ...

  7. Foundry sand testing - Wikipedia

    en.wikipedia.org/wiki/Foundry_sand_testing

    The testing process is divided into four stages: sampling of the bulk material, sample sand preparation, specimen preparation and testing. [1]It is done at three different points of the process: upon first arrival from the supplier, en transport for processing (usually on a conveyor), and after processing.

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Magnetic particle inspection - Wikipedia

    en.wikipedia.org/wiki/Magnetic_particle_inspection

    To identify a leak, ferrous particles, either dry or in a wet suspension, are applied to a part. These are attracted to an area of flux leakage and form what is known as an indication, which is evaluated to determine its nature, cause, and course of action, if any.