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  2. Vertical jump - Wikipedia

    en.wikipedia.org/wiki/Vertical_jump

    Running vertical jump: This refers to a vertical jump after a run up: the last step of the run is used to launch into the jump. This may help to add additional energy to the jump and improve on the standing vertical jump result. [2] In general, the standing vertical jump is the one that is used as an official measurement for athletes. [1]

  3. Notch (engineering) - Wikipedia

    en.wikipedia.org/wiki/Notch_(engineering)

    Charpy test sample with a notch In mechanical engineering and materials science , a notch refers to a V-shaped, U-shaped, or semi-circular defect deliberately introduced into a planar material. In structural components, a notch causes a stress concentration which can result in the initiation and growth of fatigue cracks.

  4. Stress intensity factor - Wikipedia

    en.wikipedia.org/wiki/Stress_intensity_factor

    For the situation where the plate is large compared to the size of the crack and the location of the force is relatively close to the crack, i.e., , , , , the plate can be considered infinite. In that case, for the stress intensity factors for F x {\displaystyle F_{x}} at crack tip B ( x = a {\displaystyle x=a} ) are [ 11 ] [ 12 ]

  5. Crack climbing - Wikipedia

    en.wikipedia.org/wiki/Crack_climbing

    In rock climbing, a crack climb is a type of climbing route that follows a system of crack(s) or fissure(s) that the climber uses to ascend the route. The width of the crack dictates the techniques needed, and crack-climbs are further differentiated by the body parts that can be 'jammed' into them, such as finger cracks (the narrowest), hand/fist cracks, arm cracks, and body (also called ...

  6. Watch an Olympic Jumper Test His Vertical Leap Using Next-Gen ...

    www.aol.com/lifestyle/watch-olympic-jumper-test...

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  7. Energy release rate (fracture mechanics) - Wikipedia

    en.wikipedia.org/wiki/Energy_release_rate...

    Consider a rectangular path shown in the second figure: start on the top crack face, (1) go up to the top at , (2) go to the right past the crack tip, (3) go down to the bottom at , (4) go along the bottom to the left, and (5) go back up to the bottom crack face. The J-integral is zero along many parts of this path.

  8. Trampolining terms - Wikipedia

    en.wikipedia.org/wiki/Trampolining_terms

    Half Twist and Full Twist – While in a straight jump position rotating the body until facing the opposite direction for a half twist or a complete 360° rotation for a full twist. Stomach Drop, Front Drop or Front Landing – Landing horizontally on the bed, face down, with the arms bent to form a diamond shape with the hands overlapping ...

  9. Four-point flexural test - Wikipedia

    en.wikipedia.org/wiki/Four-point_flexural_test

    The four-point flexural test provides values for the modulus of elasticity in bending, flexural stress, flexural strain and the flexural stress-strain response of the material. This test is very similar to the three-point bending flexural test. The major difference being that with the addition of a fourth bearing the portion of the beam between ...