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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.
nock (equipment) – The notch at the rear end of an arrow; also the notches at the ends of the bow limbs to which the bowstring is attached, or looped over; nock (practice) – The act of setting an arrow in a bow; nocking point (equipment) – The point on a bow string over which an arrow nock is placed
In a bow and arrow, two notches near the bow's respective ends, for attaching the bowstring Nock (arrow) , in an arrow, the notch in the fletched (feathered) end of the arrow, for engaging the bowstring
A synonym of catkin. amphitropous (of an ovule) Bent so that both ends are near each other. Contrast anatropous, campylotropous, and orthotropous. amplexicaul With the base dilated and clasping the stem, usually of leaves. amylum star a vegetative propagative body filled with starch (amylum) and located around the lower nodes of certain ...
Intrathoracic pressure is measured by using a transducer held in such a way over the body that an actuator engages the soft tissue that is located above the suprasternal notch. Arcot J. Chandrasekhar, MD of Loyola University, Chicago, is the author of an evaluative test for the aorta using the suprasternal notch. [4]
Sometimes the goal is merely the notch itself, but usually this is a precursor to some other process: such as bending a corner in sheet or joining two tubes at a tee joint, notching one to fit closely to the other. Notching is a low-cost process, particularly for its low tooling costs with a small range of standard punches.
Presumably from the practice, in counting sheep or large herds of cattle, of counting orally from one to twenty, and making a score or notch on a stick, before proceeding to count the next twenty. [3] [4] A distance of twenty yards in ancient archery and gunnery. [5] Threescore: 60 Three score (3x20) Large: 1,000 Slang for one thousand Myriad ...
NOTCH, an Indian entertainment and lifestyle magazine; Notch, Missouri, a community in the United States; Notch signalling pathway, a cell signalling system present in most multicellular organisms; Notch proteins, a family of transmembrane proteins; Notch filter, a band-stop filter with a narrow stopband; Notch test, also known as Charpy impact ...