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Effect Of Low Velocity Or Ballistic Impact Damage On The Strength Of Thin Composite And Aluminum Shear Panels
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Book Synopsis Effect of Low-velocity Or Ballistic Impact Damage on the Strength of Thin Composite and Aluminum Shear Panels by : G. L. Farley
Download or read book Effect of Low-velocity Or Ballistic Impact Damage on the Strength of Thin Composite and Aluminum Shear Panels written by G. L. Farley and published by . This book was released on 1985 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Impact tests were conducted on shear panels fabricated from 6061-T6 aluminum and from woven-fabric prepreg of DuPont Kevlar fiber/epoxy resin and graphite fiber/epoxy resin. The shear panels consisted of three different composite laminates and one aluminum material configuration. Three panel aspect ratios were evaluated for each material configuration. Composite panels were impacted with a 1.27-cm diameter aluminum sphere at low velocities of 46 m/sec and 67 m/sec. Ballistic impact conditions consisted of a tumbled 0.50-caliber projectile impacting loaded composite and aluminum shear panels. The results of these tests indicate that ballistic threshold load (the lowest load which will result in immediate failure upon penetration by the projectile) varied between 0.44 and 0.61 of the average failure load of undamaged panels. The residual strengths of the panels after ballistic impact varied between 0.55 and 0.75 of the average failure strength of the undamaged panels. The residual strengths of the panels after ballistic impact varied between 0.55 and 0.75 of the average failure strength of the undamaged panels. The low-velocity impacts at 67 m/sec caused a 15- to 20-percent reduction in strength, whereas the impacts at 46 m/sec resulted in negligible strength loss. Good agreement was obtained between the experimental failure strengths and the predicted strength with the point stress failure criterion. Keywords include: Composite materials; Shear panels; Damage tolerance; Low-velocity impact; Ballistic damage; Postbuckling; Helicopter; and Fuselage.
Book Synopsis Effect of Low-velocity Or Ballistic Impact Damage on the Strength of Thin Composite and Aluminum Shear Panels by : Gary L. Farley
Download or read book Effect of Low-velocity Or Ballistic Impact Damage on the Strength of Thin Composite and Aluminum Shear Panels written by Gary L. Farley and published by . This book was released on 1985 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Book Synopsis The ACEE Program and Basic Composites Research at Langley Research Center (1975 to 1986) by : Marvin B. Dow
Download or read book The ACEE Program and Basic Composites Research at Langley Research Center (1975 to 1986) written by Marvin B. Dow and published by . This book was released on 1987 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Information Output of the Langley Research Center for Calendar Year 1985 by :
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Book Synopsis The ACEE Program and Basic Composites Research at Langley Research Center (1975 to 1986) by : Marvin B. Dow
Download or read book The ACEE Program and Basic Composites Research at Langley Research Center (1975 to 1986) written by Marvin B. Dow and published by . This book was released on 1987 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Book Synopsis References to Contemporary Papers on Acoustics by : Frederick E. White
Download or read book References to Contemporary Papers on Acoustics written by Frederick E. White and published by . This book was released on 1986 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
