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  2. Plane strain compression test - Wikipedia

    en.wikipedia.org/wiki/Plane_strain_compression_test

    The advantages of the Watts-Ford test are that it is convenient for testing thin sheets or strips, it is similar to a rolling process (in manufacturing analyses), frictional effects may be minimized, there is no 'barrelling' as would occur in a cylindrical compression test, and the plane strain deformation eases the analysis. Stress-strain curve

  3. Harbor Freight Tools - Wikipedia

    en.wikipedia.org/wiki/Harbor_Freight_Tools

    Harbor Freight Tools, commonly referred to as Harbor Freight, is an American privately held tool and equipment retailer, headquartered in Calabasas, California. It operates a chain of retail stores, as well as an e-commerce business. The company employs over 28,000 people in the United States, [5] and has over 1,500 locations in 48 states. [6] [7]

  4. Whippletree (mechanism) - Wikipedia

    en.wikipedia.org/wiki/Whippletree_(mechanism)

    Differential (mechanical device), which does for torque what each layer of a whippletree does for force. Gresley conjugated valve gear; Mobile (sculpture), similar principles applied in art. Paraglider wing, in which a load is distributed by multiple strings, but without rigid elements.

  5. Flight test instrumentation - Wikipedia

    en.wikipedia.org/wiki/Flight_test_instrumentation

    Flight test instrumentation (FTI) is monitoring and recording equipment fitted to aircraft for specific flight tests. The development program for a new aircraft design has a number of aircraft each of which has tasks to perform for development and certification tests. They are each fitted with FTI specific to their allotted tasks.

  6. Built-in test equipment - Wikipedia

    en.wikipedia.org/wiki/Built-In_Test_Equipment

    Built-in test equipment (BITE) for avionics primarily refers to passive fault management and diagnosis equipment built into airborne systems to support maintenance processes. [1] Built-in test equipment includes multimeters , oscilloscopes , discharge probes, and frequency generators that are provided as part of the system to enable testing and ...

  7. Cabin pressurization - Wikipedia

    en.wikipedia.org/wiki/Cabin_pressurization

    The first successful flight was finally made by test pilot Lt. Harrold Harris, making it the world's first flight by a pressurized aircraft. [ 44 ] The first airliner to enter commercial service with a pressurized cabin was the Boeing 307 Stratoliner , built in 1938, prior to World War II , though only ten were produced before the war ...

  8. Leak-down tester - Wikipedia

    en.wikipedia.org/wiki/Leak-down_tester

    A compression tester. Leak-down testing is a static test. Leak-down tests cylinder leakage paths. Leak-down primarily tests pistons and rings, seated valve sealing, and the head gasket. Leak-down will not show valve timing and movement problems, or piston movement related sealing problems. Any test should include both compression and leak-down.

  9. Aeroelasticity - Wikipedia

    en.wikipedia.org/wiki/Aeroelasticity

    NASA testing a scale model Lockheed Electra in a wind tunnel for flutter. Aeroelasticity is the branch of physics and engineering studying the interactions between the inertial, elastic, and aerodynamic forces occurring while an elastic body is exposed to a fluid flow.

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