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honeycomb core crush

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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
... intermingling. The article discusses the factors that govern the honeycomb core movement and honeycomb core crush, with illustrations. Some common tests performed on honeycomb composites to characterize the skin-to-core bond strength are the climbing drum peel and flatwise tensile tests. The article concludes...
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
... 1810-A Wrinkling of the Facings of Sandwich Construction Subjected to Edgewise Compression; Sandwich Constructions Having 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...
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
...Abstract Abstract Lightweight structural cores are used on aircrafts to reduce weight and increase payload and fight distance. This article discusses the classification of lightweight structural cores, namely, honeycomb, balsa, and foam. It reviews the four primary manufacturing methods used...
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
... is shown in Fig. 9 . Fig. 9 Positive print from x-ray negative showing water intrusion into honeycomb cells Crushed Core A crushed honeycomb core may be associated with a dent in the skin or may be caused by excessive bonding pressure on thick core sections. Crushing of the core greatly...
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
... will crush the cell walls and densify the inner radius. Overexpanded honeycomb can be formed to a cylindrical shape on assembly. Flex-core usually can be shaped to compound curvatures on assembly. Nonmetallic honeycomb can be heat-formed to obtain curved parts. Usually the core slice is placed in an oven...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009074
EISBN: 978-1-62708-177-1
.... , and Green G.E. , Effect of Impregnation Conditions on Prepreg Properties and Honeycomb Core Crush , Polym. Compos. , Vol 18 ( No. 1 ), 1997 , p 90 – 99 10.1002/pc.10264 3. Hayes B.S. , Seferis J.C. , and Chen J.S. , Development and Hot-Melt Impregnation of a Model...
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
... X Condensed core 2 2 2 X X Crushed cure 2 2 2 X X Distorted core X X Cut core X X X X X Missing core 2 2 2 2 X X X Node debond X 2 X Water in core 2 2 2 X X X Debonds X X X X X...
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
... for aircraft interior structures Table 5 Boeing phenolic prepreg specification requirements for aircraft interior structures Property Sandwich panels and laminates (BMS 8-226) Crushed core glass fiber (BMS 8-222) Crushed core graphite fiber (BMS 8-274) NBS maximum smoke density at 4 min 20...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003479
EISBN: 978-1-62708-195-5
... process that ensures uniformity, while it eliminates seams and overlaps. Braided skis resist torsion better and weigh 0.45 kg (1 lb) less than hand lay-up skis—due to closer tolerances and less excess resin. Hexcel Corporation is manufacturing Alpine and cross-country skis using honeycomb cores...
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
..., and honeycomb processing, including perimeter trimming, mechanical forming, heat forming, core splicing, contouring, and cleaning. The article presents basic steps involved in the adhesive-bonding process and concludes with a discussion on adhesive applications and tooling. adhesive adhesive bonded...
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
... punctures to the 0.51 mm (0.020 in.) facings or dings in the trailing edge that will cause local delaminations. There also might be some surface bruising that crushes the honeycomb core without damaging the facesheets. If any damage is not too close to the fitting or front spar, there is no limit...
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
... must be taken into consideration when designing, testing, and analyzing them. In addition, load and support-point softness should be considered in load introduction, as should the requirement for load pads to prevent local crushing, especially in sandwich beams with honeycomb or foam cores...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003451
EISBN: 978-1-62708-195-5
... of components such as rudders, flaps, and so forth. Experience has shown that if moisture is present in a honeycomb core, then heating to 180 o C (355 °F) can produce an internal steam pressure of about 1.2 MPa (180 psi). At this temperature the strength of the adhesive is seriously reduced, and disbonding...
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
... to their mass. A sandwich structure consists of two thin facesheets separated by and adhesively bonded to a lightweight aluminum honeycomb core. Most often, the facesheets are composite laminates with quasi-isotropic lay-up (e.g., [0/±45/90] s or [0/±60] s ). The facesheets carry the axial loads, bending...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003436
EISBN: 978-1-62708-195-5
... containing typical induced defects. Standard configuration should represent the configuration being evaluated and induced defects positioned in accordance with the NDT engineer's direction Fig. 45 Typical radiographic reference standard configurations. (a) Laminate skin honeycomb core sandwich...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003408
EISBN: 978-1-62708-195-5
...-ply cutting is required to meet the high volumes. In some cases, up to twenty layers of prepreg or woven carbon or up to 75 mm (3 in.) of honeycomb core are cut on a conveyorized reciprocating blade cutter and kitted off-line. The kits are then delivered directly to the crush core panel presses...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001466
EISBN: 978-1-62708-173-3
... preparation. Note exposed fibers and small amount of damaged fibers. 415× Fig. 12 Effect of not predrying organic honeycomb cores. (a) Dried core. (b) Undried core Fig. 7 Imprint of a nylon peel ply left after removal from composite laminate. 58× Fig. 8 Imprint of a peel ply...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003462
EISBN: 978-1-62708-195-5
... to dye-penetrant-aided x-radiography, standard x-ray analysis can provide information regarding ply counts, ply orientations, and ply drop-offs. Foaming of resins or adhesives will also be apparent, as will water ingression into core details. The orientation, cell size, and web materials of honeycomb...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.9781627081955
EISBN: 978-1-62708-195-5
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003746
EISBN: 978-1-62708-177-1
... the critical surface first (arrow). Cutting the critical surface first is one way to optimize cutting speed and also to prevent burning of the specimen at the critical location Fig. 16 Wire saw with an endless loop Fig. 12 Three pieces of honeycomb cut with a diamond wire saw. Note...