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honeycomb sandwich panel construction

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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003455
EISBN: 978-1-62708-195-5
...Abstract Abstract This article discusses the requirements for designing repairable composite structures such as a honeycomb sandwich panel construction and integrally stiffened co-cured composite structures. It reviews the general and specific design guidelines for bolted or riveted repairs...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003037
EISBN: 978-1-62708-200-6
..., honeycomb as a structural product appeared just after 1940 in aircraft sandwich panel construction. Most honeycomb used today is adhesively bonded core that is subsequently bonded to facings to form a sandwich panel. Other common types of honeycomb cores presently being produced include metallic cores...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003388
EISBN: 978-1-62708-195-5
... Honeycomb Cores 1815 Effect of Shear Strength on Maximum Loads of Sandwich Columns 1817 Short-Column Compressive Strength of Sandwich Constructions as Affected by the Size of the Cells of Honeycomb-Core Materials 1827 Edgewise Compressive Strength of Panels and Flatwise Flexural Strength...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003375
EISBN: 978-1-62708-195-5
... honeycomb. The most common corrosion-resistant coatings are chromate based and phosphoric acid anodization based. Phosphoric acid anodization provides enhanced honeycomb-to-facing bond strength in sandwich panel construction and enhanced protection in hot/wet and salt environments. Cell wall thicknesses...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003475
EISBN: 978-1-62708-195-5
... (13 × 10 ft). Overall panel flatness usually is maintained at 1 mm/m (0.01 in./ft), but can be tightened up to approximately 30 to 50% of that value if required. The state-of-the-art SAS is a honeycomb sandwich construction with discrete hinge and/or snubber attachment fittings around the perimeter...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003477
EISBN: 978-1-62708-195-5
... (1800 lb) per aircraft. The Beech Starship I includes approximately 1360 kg (3000 lb) of composites. With the exception of small detail parts, empennage primary structure spars, and skin panels, most composite components for commercial airplanes are of honeycomb sandwich construction. These may...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003456
EISBN: 978-1-62708-195-5
... in military and commercial aviation applications. The three main configurations used in commercial aircraft composites are sandwich, stiffened-skin, and monolithic structures. Sandwich Structure Two forms of sandwich structures are found in aircraft applications: honeycomb panels and sandwich panels...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003457
EISBN: 978-1-62708-195-5
... Elevators The T300-5208 graphite-epoxy elevator was constructed with Nomex honeycomb sandwich skins and ribs, and laminated spars (see the article “Aircraft Applications” in this Volume). Following initiation of flight service of ten elevators in 1980, three B-727 graphite-epoxy elevators were...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
.... Honeycomb Sandwich Defects The most prominent defects found or generated in honeycomb sandwich assemblies are summarized in Table 1 . Adhesion and/or cohesion defects may also occur in bonded honeycomb sandwich assemblies. The metal-to-metal closure areas for honeycomb panels may exhibit the types...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003366
EISBN: 978-1-62708-195-5
..., cured at 175 °C (350 °F) for 1 h at 1380 kPa (200 psi). Source: Ref 5 and 18 Phenolic Honeycomb Phenolic prepregs based on carbon, aramid, or glass fibers are used as face sheets on Nomex honeycomb to construct sandwich panels for aerospace applications such as cargo liners, walls, galleys...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003489
EISBN: 978-1-62708-195-5
... of two thin, high-strength facings bonded to a thick, lightweight core. Each component by itself is relatively weak and flexible, but when combined into a sandwich panel they produce a structure that is stiff, strong, and lightweight. A honeycomb sandwich panel, formed by adhesively bonding thin skins...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003444
EISBN: 978-1-62708-195-5
... Strength of Honeycomb Core Materials Peel C 364 Edgewise Compressive Strength of Flat Sandwich Constructions Edgewise compression C 365 Flatwise Compressive Properties of Sandwich Cores Flatwise compression C 393 Flexural Properties of Sandwich Constructions Flexure C 394 Shear Fatigue...
Book Chapter

By Greg Kress
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003392
EISBN: 978-1-62708-195-5
.... Polymers are classified as being thermoplastic or thermoset. Other matrices : Metal, ceramic, carbon, glass Structural configurations: Solid laminate, sandwich panels, stiffened panels Core materials: Honeycomb, foam, wood, syntactic Processing options include: Manufacturing...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003046
EISBN: 978-1-62708-200-6
... Repair The approach to honeycomb sandwich repair taken here is a scarf joint on both inner and outer eight-ply faces ( Fig. 8 ). The inner face is repaired first, following much the same procedure as that used for a blind-side monolithic laminate just discussed. The blind-side patch is a five-ply...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003047
EISBN: 978-1-62708-200-6
..., including fillers, adhesion promoters, tackifiers, and tougheners. It gives a short note on functions of primers and primerless bonding. Applications of adhesives in automotive, aerospace, electronics, electrical, medical, sports, and construction sectors are also described. Finally, the article describes...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003407
EISBN: 978-1-62708-195-5
... construction, based on materials and processes little changed since the 1980s (polyester resin, chopped strand mat and woven rovings, hand laminating), to elevated- temperature cure, vacuum consolidation, and unidirectional prepreg tapes with honeycomb cores. Most custom or one-off builders use epoxy-resin...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003395
EISBN: 978-1-62708-195-5
... be staged, cocured, precured and integrated, or bonded. Sandwich construction with honeycomb or foam results in lightweight alternatives to discretely stiffened panels. As the part count is reduced, the complexity of the components is increased. The structural design may be as extensive as the aft fuselage...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003459
EISBN: 978-1-62708-195-5
... an adhesive bond failure between joined structures. They usually are observed with a face sheet disbonding from an underlying sandwich core material. Core Damage Core damage can occur with any type of core. Causes of core damage include handling damage in manufacturing, impact, improper vacuum bagging...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003385
EISBN: 978-1-62708-195-5
... shear stiffness effects. The article presents the study of instability associated with postbuckling behavior and hygrothermal buckling in composite sandwich panels and shell panels. composites orthotropic plates anisotropic plates unsymmetric plates transverse shear stiffness postbuckling...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002492
EISBN: 978-1-62708-194-8
... construction with honeycomb or foam results in lightweight alternatives to stiffened panels. As the part count is reduced, the complexity of the components is increased. The structural design may be as extensive as the aft fuselage of the V-22 Osprey (built by Boeing Defense and Space Group, Helicopters...