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honeycomb core movement

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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
... the differences in the constituents and resin 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...
Image
Published: 01 December 2004
Fig. 3 Ultrathin section of areas of the honeycomb sandwich composite structure where resin was found to span the separated prepreg plies after core movement. (a) Transmitted light, phase contrast, 40× objective. (b and c) Transmitted light, phase contrast, 20× objective More
Image
Published: 01 December 2004
Fig. 2 Ultrathin section of an area of a honeycomb sandwich composite structure showing the effects of core movement during manufacturing and the resulting deformation and separation of the prepreg plies. (a) Transmitted crossed polarized light, 20× objective. (b and c) Transmitted polarized More
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
... result in porosity or voids. Honeycomb core assemblies have been found with all types of foreign material. Metal-to-Metal Defects Voids A void is any area that should contain, but does not contain, adhesive. Voids are found in a variety of shapes and sizes and are usually at random locations...
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
... damage to the sample. To make these types of specimens ready for grinding and final polishing, it is necessary that the honeycomb is impregnated with a mounting resin. This is accomplished using a thin abrasive blade and making cuts through the honeycomb core, but not far enough to separate the sample...
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
... and significantly degrades mechanical properties. Fluid also degrades the honeycomb cell wall, which increases the ease of water migration. Eventually, when a honeycomb cell is full of water, the expansion during freezing is strong enough to cause the skin to delaminate from the core. During repairs, water must...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003434
EISBN: 978-1-62708-195-5
... temperature is usually −18 °C (0 °F) or lower. Fig. 4 Relationship of storage, mechanical, and handling lives of a prepreg. Prepreg and adhesives may be returned to storage one or more times provided their handling lives have not been exceeded. Honeycomb core is packaged and stored in a manner...
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
... over at speeds up to 130 km/h (80 mph). Snowboards A composite snowboard is constructed by Hexcel Corporation. The board consists of a thermoplastic cap or top layer, a layer of glass, carbon, or hybrid prepreg, a polyurethane honeycomb core, another layer of glass, carbon or hybrid prepreg...
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 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 an assembly...
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
... beam can create shear waves in the part. The TT method, with the angle beam in particular, is an excellent technique on a number of materials inspections, such as honeycomb core structures where low frequency inspection (below 1 MHz) is necessary for penetration. However, for optimal signal levels...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... significant differences in air-coupled UT systems from conventional equipment. Materials with lower acoustic impedance (generally lower-density materials) are well suited for air-coupled UT inspection. Thick or multilayered sandwich panels with foam or honeycomb core construction are good examples...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.9781627081900
EISBN: 978-1-62708-190-0
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003240
EISBN: 978-1-62708-199-3
... and testing applications as a noncontacting tool for displacement, strain and vibration studies, depth-contour mappings, and transient/dynamic phenomena analyses. Specific applications of optical holography in nondestructive evaluation include: Detection of debonds within honeycomb-core sandwich...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003487
EISBN: 978-1-62708-195-5
... or on a plane through the starting point and per- multiple cavity. pendicular to the axis. C cell. In honeycomb core, a cell is a single hon- circumferential ( circ ) winding. In lament- eycomb unit, usually in a hexagonal shape. wound reinforced plastics, a winding with the calender. To produce a smooth nish...
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: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005863
EISBN: 978-1-62708-167-2
... density, time of heating, and coil geometry. Typical induction surface-hardening temperatures range from approximately 880 to 1050 °C (1620 to 1920 °F). The color associated with this range is orange to yellow. The surface hardness, case depth, and core requirements will typically determine the grade...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006518
EISBN: 978-1-62708-207-5
... the honeycomb cores used in bonded honeycomb sandwich panels. Alclad Products Aluminum products sometimes are coated on one or both surfaces with a metallurgically bonded, thin layer of pure aluminum or aluminum alloy. If the combination of core and cladding alloys is selected so the cladding is anodic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003125
EISBN: 978-1-62708-199-3
... finishes for foil than for sheet. Foil often is treated chemically or mechanically to meet the needs of specific applications. Common foil alloys are 1100, 1145, 1235, 3003, 5052, and 5056 ( Table 1 ). Higher-strength foil of alloy 2024, 5052, or 5056 is used to produce the honeycomb cores used in bonded...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009076
EISBN: 978-1-62708-177-1
... (for example, honeycomb sandwich composites/prepreg matrices, honeycomb core adhesives and dip resins, film adhesives, primers, and paints) between components that must be documented. Surfaces where thermal oxidation, ultraviolet light degradation, or contamination has occurred Areas that have been...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005351
EISBN: 978-1-62708-187-0
..., but their size, expense, and single-alloy use preclude their economic use in multiple-alloy wrought casting (ingot) or foundry casting operations. Bed filters are capable of providing nearly the highest filtration efficiency attainable, but because the bed is not rigid, movement and flow channeling can occur...