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Investigation of crushing strength of spruce at varying angles of grain (material section report no. 130)

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dc.creatorUnited States. Army. Air Service. Engineering Division.en_US
dc.descriptionThe purpose of this investigation was to determine the crushing or compressive strength of spruce at varying angles of the grain from 0° to 90°. A new formula derived from this investigation approximates the test data very closely. This formula apparently applies as well to the fiber stress at elastic limit in compression as to the ultimate strength in compression. The formula apparently applies to any species as well as to spruce. Additional work should be done on determining the ratio between compression perpendicular to the grain and compression parallel to the grain for the various species used in airplane work.en_US
dc.publisherWashington, D.C. : Chief of Air Serviceen_US
dc.relation.ispartofseriesAir Service information circular (Aviation) ; v. 3, no. 259en_US
dc.relation.ispartofseriesMcCook Field report ; Serial no. 1570en_US
dc.subjectStrength of materialsen_US
dc.subjectMaterials--Compression testingen_US
dc.subjectStrains and stressesen_US
dc.titleInvestigation of crushing strength of spruce at varying angles of grain (material section report no. 130)en_US

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