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honeycomb-cored sandwich panels

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Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009083
EISBN: 978-1-62708-177-1
... panels increase part stiffness at a lower weight than monolithic composite materials. This article illustrates an area of a honeycomb-cored sandwich structure composite cross section that is viewed using transmitted polarized light. This area shows the differences in the constituents and resin...
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
... of the Cells of Honeycomb-Core Materials 1827 Edgewise Compressive Strength of Panels and Flatwise Flexural Strength of Strips of Sandwich Constructions 1828 The Bending of a Circular Sandwich Plate under Normal Load 1829 Flexure of Structural Sandwich Construction 1830 Buckling of Cylinders...
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
..., density, mechanical properties, environmental compatibility, formability, durability, and thermal behavior. The article provides information on the benefits and concepts of a sandwich panel containing lightweight structural cores. lightweight structural cores honeycomb structural cores balsa...
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
... classify materials for use in specific environments. The effect of environmental degradation on the mechanical integrity of a composite is significant. Moisture can also migrate through sandwich panel facesheets or enter as a result of impact damage and be absorbed in the honeycomb core, as shown...
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
... sandwhich panel structural efficiency Table 3 Honeycomb sandwhich panel structural efficiency Relative stiffness ( D ) 100 700 3700 Relative strength 100 350 925 Relative weight 100 103 106 Fig. 8 Basic sandwich structural criteria Fig. 6 Core splicing...
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.a0003457
EISBN: 978-1-62708-195-5
... thickness criteria based on realistic impact energy levels; avoid self-adhesive prepregs when bonding to sandwich core; avoid fasteners penetrating into the core; potting around fasteners sufficient diameter; potting susceptible to cracking over time, or to moisture absorption; avoid square-edge honeycomb...
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
... 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.a0003456
EISBN: 978-1-62708-195-5
..., or a combination of these materials in an epoxy matrix. The core is typically an aramid or fiberglass paper honeycomb, aluminum honeycomb, foam, or balsa wood material. Sandwich structures composed of a solid laminate plus an equivalent core thickness will be seven times the stiffness and almost four times...
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...
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
... 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 be either full-depth designs, such as the 767 outboard aileron...
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
... of 0.0±0.1 ppm/ °C. Figure 5 shows a composite truss-type optical bench structure, consisting of tubes with plates and a thick honeycomb sandwich panel. Optical benches have also been designed with facesheets and internal egg-crated ribs. Ribs are made from thin laminates and slotted half-height...
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
... Delamination 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...
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
... fibers are used as face sheets on Nomex honeycomb to construct sandwich panels for aerospace applications such as cargo liners, walls, galleys, ceilings, and floors. The sandwich panel structure is selected due to its high strength-to-weight ratio. For densification, Nomex honeycomb is also treated...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003046
EISBN: 978-1-62708-200-6
..., the results indicate that a blind-side repair can be made every bit as good as one with access to both sides if the blind-side patch can be adequately bonded using techniques like those demonstrated here. The approach to honeycomb sandwich repair taken here is a scarf joint on both inner and outer eight...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002194
EISBN: 978-1-62708-188-7
..., for example, is much more severe than that encountered in machining the matrix metal alone. Honeycomb structures consist of a core formed into hexagonal-shaped cells ( Fig. 2 ) bonded to facing materials to form a sandwich panel ( Fig. 3 ). These sandwich structures have two types of cores: metallic...
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
... Reinforcement fibers and fabrics Fiberglass Aramid Carbon Boron Others Reinforcement form Unidirectional tape Woven cloth Weave style Core materials Honeycomb Foam Balsa wood Potting compounds Others Lightning-strike materials Aluminum mesh Copper...
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
... associated with instability of the facesheet due to insufficient elastic support from the core. One form of instability is buckling between the cell walls of a honeycomb core. Facesheet instability can also occur on foam cores. A simple, approximate equation for the mode was developed by Hoff and Mautner...
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
... of the exterior of a joint is used to determine whether a joint contains an adequate amount of adhesive and whether the adhesive appearance and, with probing, the feel rule out a poor state of cure. A continuous bead of adhesive should be visible around the edge of the joint. Cores Cores may be taken from...
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
... (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 systems with some form of vacuum- assisted consolidation to reduce resin...