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Andreas Stihl designed and hand built his first chainsaw in 1926. [5] The saw was electrically powered, and weighed about 48 kg (106 lb). [6] Stihl grew slowly initially, as the chainsaws came to the market about the same time as the Great Depression; with manpower cheap, and old two-man saws proven, there was no need for power saws.
A Griffith crack (flaw) of length is in the middle [3] [4] an infinity large material. Fracture mechanics was developed during World War I by English aeronautical engineer A. A. Griffith – thus the term Griffith crack – to explain the failure of brittle materials. [5] Griffith's work was motivated by two contradictory facts:
The fracture of a solid usually occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displacement develops perpendicular to the surface, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially, it is called a shear crack, slip band, or dislocation. [1]
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The Stihl Timbersports Series is a series of woodsman or wood chopping competitions where the athletes compete in the use of axes and saws in manners typical for lumberjacks. It was founded in 1985, and currently includes six different disciplines, with both professional and collegiate divisions.
Death. Taxes. Saquon Barkley's weekly RB1 overall upside in fantasy football — the only three guarantees in life. Barkley has had an absurd four weekly finishes as the overall RB1 in full-PPR ...