It is well understood that automated tape laying (ATL) and automated fiber placement
(AFP) were the enabling technologies in the application of carbon fiber composites in
major aerostructures for the Boeing 787 and the Airbus A350 aircraft. Prior to the
development of these planes, composites had been applied in gradually increasing amounts
in commercial aircraft for more than 30 years, but mainly in secondary structures using
hand layup and some automated manufacturing processes.
With the 787 and the A350, however, Boeing (Seattle, Wash., U.S.) and Airbus
(Toulouse, France) responded to demand for lighter weight aircraft, which accelerated
adoption of composite materials and processes for use in fuselage skins, stringers,
frames, wing skins, wing spars, wing boxes and tail structures. ATL and AFP led the
charge, allowing each OEM, and their suppliers, to efficiently lay down large amounts of
prepregged UD-tape and tows.
ATL found a place fabricating wing structures, which, being modestly contoured, took
advantage of the wide format (3, 6 or 12 inches) of the tape products, which could be laid
down quickly. However, what ATL offered in speed and volume it sacrificed in
conformability.
AFP, on the other hand, which lays down multiple tows 0.125 to 0.5 inch wide, found a
place fabricating fuselage and other more contoured structures that demand maximum
flexibility and conformability. However, what ATL offered in conformability it sacrificed
in speed and volume.
Further, as enabling as these technologies were, they clearly reflected the state of
ATL/AFP art at the time of the planes’ initial development, almost 20 years ago now.
Indeed, the production pace of the 787 and the A350 (each now less than 10/month in light
of the coronavirus pandemic) is well-aligned with previous-generation ATL/AFP
technologies, which are relatively slow. These technologies also depend on human operators
to provide in-process visual inspection and quality control, checking for the laps, gaps,
wrinkles, foreign object debris (FOD) and other flaws endemic to the automated laydown
process. This quality control step represents a significant bottleneck in the manufacture
of composite structures.
But as commercial aircraft manufacturers look
to the future (well beyond the coronavirus pandemic) and the aircraft they will develop —
particularly new single-aisle (NSA) programs to replace the Boeing 737 and Airbus A320 —
shipset volumes are likely to be on the order of 60-100 per month. This demands composite
materials and process capability orders of a magnitude more efficient than those used to
fabricate structures for the 787 and the A350.
Honeycomb panel applications
EconCore has granted plastic film company Renolit a license for the continuous
production of honeycomb panel.
Renolit has reportedly used the honeycomb in its Gorcell range of products for
automotive, outdoor kitchens, truck superstructures, and bakery panels applications. More
recently, Renolit has produced products for gardens, balconies and terraces made with
honeycomb panels.
According to EconCore, the honeycomb has helped Renolit improve panel planarity,
reduce golf ball effect, and create smooth, scratch free surfaces.
The Renolit Gorcell production process includes film unwinding, vacuum forming, core
calibration, skin layer lamination, panel calibration and cutting.
This story uses material from EconCore, with editorial changes made by Materials
Today. The views expressed in this article do not necessarily represent those of Elsevier.
Scanning electron microscopy and digital image correlation observations reveal the
failure mechanisms of overmolded hybrid composites. The failure behavior of overmolded
hybrid composites is mainly CFRT
laminates failure for all cases. The evolution of non-uniform strain fields
indicates that the fracture of overmolded thermoplastic composites may initiate at the
edges and spread out to the far fields.
INTRODUCTION
Wood is a renewable, ecological raw material employed to manufacture high quality
furniture and everyday products. Its versatile utilization in numerous branches of the
wood industry exerts considerable influence on the intensive exploitation of wood
resources. The above-mentioned factors clearly show that there are reasons to replace
traditional panel materials, such as plywood (PW), particleboard (PB), oriented strand
board (OSB), medium-density fiberboard (MDF), and high-density fiberboard (HDF), with
lightweight sandwich honeycomb panels. These panels are characterized by relatively high
strength and stiffness (Khan 2006; Schwingshackl et al. 2006; Jen and Chang 2008;
Smardzewski 2013). According to Negro et al.(2011), the density of light honeycomb panels
should not exceed 500 kg/m3.
The use of honeycomb panels with paper cores manufactured from hexagonal cells is
quite widespread. However, during the manufacturing process these cells acquire irregular
shapes of non-regular hexagons (Xu et al. 2008). In a study conducted by Smardzewski and
Prekrat (2012) it was demonstrated that the core of a
honeycomb panel made of irregular
hexagonal cells placed between two HDF panels equalizes quite well the stresses that
develop in the facings. The above researchers observed that the stiffness and strength of
the honeycomb panels were affected significantly by the paper grammage as well as the cell
shapes and dimensions.
Honeycomb structures find widespread application in the motor, airplane, and military
industries (Schmueser and Wickliffe 1987). In the furniture industry, due to economic
reasons, honeycomb panels with thicknesses exceeding 25 mm (Barboutis and Vassiliou 2005;
Smardzewski 2015; Smardzewski and Jasińska 2016) are preferred. Furthermore, physico-
chemical properties of honeycomb panels with hexagonal cells manufactured from light
metals are commonly known (Paik et al. 1999; Schwingshackl et al. 2006; Said and Tan
2008).
To increase the stiffness of wood-based honeycomb panels, the type and thickness of
their facings (Meraghni et al. 1999; Sam-Brew et al. 2011; Chen and Yan 2012) were
changed, the paper used to manufacture them was impregnated, and the dimensions as well as
the shapes of the core cells were changed (Majewski and Smardzewski 2012). In addition,
recommendations were made regarding factors that should be taken into account during the
production process of paper cores of honeycomb panels intended for the furniture industry
(Sam-Brew et al. 2011). For the core with hexagonal cells, these suggestions included:
cell dimension, filling height, filling density, as well as cell orientation with respect
to the panel sheet. In addition, it was confirmed many times that the honeycomb panel
stiffness depends on the stiffness of the external facings. On the basis of a four-point
bending, it was demonstrated that to reduce deflection of a honeycomb panel with a paper
core and wood base facings, core cells should be as small as possible, whereas the core
height should be as large as possible (Sam-Brew et al. 2011). It has been shown that
honeycomb panels have higher values of shear modulus and higher stiffness when planes of
common core cell walls are oriented parallel to the longer side of the panel (Bitzer
1997). The enlargement of the inclination angle of the cell walls increases the panel
density and, by doing so, it significantly enhances its strength and stiffness (Majewski
and Smardzewski 2013).
Hexagonal, regular core cells ensure panel isotropy, whereas the elongated cells
affect their orthotropy (C?té et al. 2004; Smardzewski and Prekrat 2012). The honeycomb
panel core and facing isotropy exert a positive influence on the processes of their
cutting by minimizing the amount of waste during the production process. Simultaneously,
isotropy assures the uniform bending stiffness in mutually perpendicular directions. In
contrast, orthotropy interferes with panel cutting efficiency, although it does has an
advantageous influence on improved stiffness and strength of rectangular panels along one
preferred direction. This is an exceptionally useful property when designing shelves and
horizontal partitions in cabinet furniture. Rectangular cells constitute a special case of
core polygonal cells. Their shape and arrangement in the honeycomb panel core can have a
crucial impact on improved multilayer panel stiffness. Based on the available literature,
it has not yet been analyzed to what extent elongated, rectangular paper core cells affect
the mechanical properties of furniture honeycomb panels and the orthotropic strength of
such panels.
The aim of this study was to determine the effect of the orientation of the
rectangular cells of the paper core on the mechanical properties of three-layer furniture
panels. The cognitive objective of the experiments was also to ascertain relative density
and elasticity constants of the designed cells. The authors decided to compare the results
of the empirical experiments of cell elasticity moduli with the results of analytical
calculations. The practical goal of the investigation was to show the possibilities of
substituting cores with hexagonal cells used in furniture panels with cores with
rectangular cells.
Global Unidirectional Tape (UD Tape) Industry Research and Trend Analysis Report
In addition to lightweight, UD tape also has the advantages of thermoforming and other
advantages, and can be used as a structural supplementary material. Automobile exhaust
emissions are one of the main culprits of greenhouse gas sources, which also increase the
environment and manufacturers' costs. By using new materials such as UD tape, the
vehicle can be made lighter and carbon emissions can be reduced. However, these fiber
tapes are expensive and difficult to mass produce. To solve this problem, five European
partners funded by the European Union gathered together to carry out a project called
FORTAPE, covering the entire industrial chain. The project requires a wide range of
beneficiaries to develop new integrated technologies that make the most effective use of
materials and energy, so that UD tape can be better applied to vehicles and aircraft.
UD tapes using PP are easy to thermoform and can also be formed into complex shapes.
In an EU initiative, it was first proposed to use a cost-effective method to produce
unidirectional fiber belts, which can be used to manufacture and reinforce parts on cars
and airplanes. This solution will make parts lighter and more environmentally friendly. UD
tape can be used to enhance the mechanical properties of plastic parts, and can also be
used to manufacture structural parts, strengthen and thermoform multilayers.
UD tape production focuses on three main axes: UD tape manufacturing, parts
manufacturing, and process and part modeling. At present, three different fiber
impregnation technologies have been studied internationally to develop innovative
processes for manufacturing UD carbon fiber and glass fiber tape to increase fiber
content. The use of UD tape as a window regulator to enhance automation will help meet the
cycle and output requirements of the automotive industry. At the same time, a window frame
manufacturing process using fire-resistant polyamide UD tape will be developed for the
aviation industry.
The initial development focus has been primarily on automotive interiors, including
seating area components, door side-impact beams, cross-car beams, brake pedals, steering-
column holders, airbag modules, and front ends. “At this time of increasing fuel
requirements for automotive, OEMs are putting a lot of emphasis on lightweighting,” says
Calvin Nichols, market development manager for automotive seating at BASF in Wyandotte,
Mich. BASF refers to the technology as “continuous fiber-reinforced thermoplastic” or
CFRT, while Pittsburgh-based Lanxess typically calls it “nylon composite sheet hybrid
technology.” Similarly, Engel in York, Pa., refers to its process as Organomelt and
KraussMaffei, Florence, Ky., calls its version FiberForm. The technology has also been
described as “organic sheet overmolding.”
Whatever the label, this technology also has significant potential for use in other
markets. There are variants of the technology in development that will further the use of
thermoplastic composites in a range of industries that are seeking lightweight but high-
strength material options, as well as the low cost, automation, and short cycle times
possible with injection molding.
Both Engel and KraussMaffei first demonstrated the technology in two elaborate molding
cells at the K2010 show in Dusseldorf, Germany. There, Engel molded a steering-column
holder and KraussMaffei a door side-impact beam. Both used Tepex composite sheets from
Germany’s Bond-Laminates GmbH and nylon overmolding compounds from Lanxess. (Lanxess
recently acquired Bond-Laminates.) The two demonstrations used robots (linear or six-axis)
to preheat the sheet in an oven at 300 C for 30-40 sec and then transfer the hot sheet to
the injection mold. Closing the mold preformed the sheet, and then more nylon was injected
over it in specific areas. Cycle times ranged from 33 to 55 sec. (the latter limited by
oven-heating capacity).
Engel’s part, with its more complex geometry, was laser-trimmed outside the mold. In
the case of KraussMaffei, which compounded the long-glass overmolding compound direct from
roving on its IMC injection molding compounder, the robot transferred the net-shaped part
to a quality-check station after molding.
The two material suppliers displayed applications for the technology at K2010. Lanxess
showed an Audi A8 front-end reinforcement molded by Germany’s Magna Decoma Exterior
Systems, containing both aluminum and Tepex inserts overmolded with nylon 6. BASF
displayed a seat back from Faurecia of France consisting of woven-glass/nylon sheet from
California-based Performance Materials Corp., overmolded with a specially developed 35%-
glass nylon 6 compound (BASF’s Ultramid CompoSIT XA3232) that combines stiffness,
ductility, and Class-A-type finish. The part weighs about 20% less than standard seat
backs and is expected to be commercial within the next two years.
WHERE IS IT HEADING?
Sources at these four suppliers foresee dramatic growth potential, starting with auto
interior components but extending to exterior, chassis, and power-train applications. They
also envision applications in aeronautics, trains, trucks, agricultural equipment,
machinery manufacturing, and renewable-energy systems.
BASF’s Nichols says, “Glass in a unidirectional form is much stronger than other
forms of glass or ferrous and nonferrous metals. Such a sheet composite overmolded with
nylon 6 has tensile strength as much as five times that of metals. Strength-to-weight
ratio is dramatically improved over metals—twice that of steel and three-to-four times
higher than a standard injection molded glass-filled thermoplastic. Stiffness-to-weight
ratio with the continuous-glass composite laminate overmolded with nylon is eight times as
much as steel.”
Other thermoplastics considered as candidates for this technology include PP, PBT,
PES, PEEK, nylon 612, and possibly nylon 66, depending in large part on how well they meet
strict flammability requirements.
Meanwhile, the machinery suppliers both have recently introduced new equipment to
further progress in this nascent technology. Engel is recommending its new v-duo vertical
large tonnage machines for Organomelt systems. Hydraulically powered with energy-saving
servo-driven pumps, they are offered in five sizes from 400 to 2300 metric tons. The
larger sizes are aimed at continuous-fiber composites, with their easy mold access to
facilitate loading of reinforcing fabrics and organic sheets and tapes.
Related ads
Difference between feed pellet machine and wood pellet machine
Feed pellet machine is also named as pellet feed mill, fodder pellet mill. It belongs to animal feed processing equipment, which can directly extrude corn, soybean meal, rice husk, straw and grass into small pellets. 1, Different Raw Materials Feed… Adıyaman
What You Need To Know About Red Light Therapy
What You Need To Know About Red Light Therapy What Is Red Light Therapy? Red light therapy (RLT) is a treatment that may help skin, muscle tissue, and other parts of your body heal. It exposes you to low levels of red or near-infrared… Afyonkarahisar
Neotonics Reviews Scam New Side Effects Warning! Real User Responses Exposes The Truth!
Ingredients: Central to the efficacy of Neotonics Skin are its meticulously curated ingredients, sourced from nature's bounty and enhanced through scientific innovation. Among the key ingredients featured in Neotonics Skin formulations are: Peptides:… Adıyaman
buy Disposable Face Mask For Children
buy Disposable Face Mask For Children 鈼?Elastic Bands closure 銆怌arefree Breathing銆慣he size specially designed for kids children, especially suitable for kids to go to school, outdoor activities, shopping and other activities. High-elastic cotton… Adıyaman
Hypeno Drops Côte d’Ivoire
Hypertension, usually known as Hypeno Drops hypertension, is an unavoidable wellbeing concern influencing a large number of people around the world. Overseeing and really focusing on hypertension is foremost in forestalling related Hypeno Drops Côte… Adıyaman
Official Websites https://www.cryptoalertscam.com/gpt-definity-reviews/ https://www.cryptoalertscam.com/immediate-duac-reviews/ https://www.cryptoalertscam.com/immediate-core-platform-reviews/ https://www.facebook.com/gptdefinitypro/ To truly understand… Afyonkarahisar
Must-have kitchen accessories
6 Must-Have Kitchen Accessories That You Should Own For many especially to moms, the kitchen is the most-used space at home, like bathroom suppliers. It’s where meals are prepared; and a place where everyone can bond together and enjoy quality time.… Adıyaman
How Do Bluetooth Speakers Work & How To Connect Them
In recent years, Bluetooth connectivity has become more and more prevalent in our everyday lives and how we listen to audio (through speakers and headphones). You may have wondered how exactly your Bluetooth speaker works, and by reading this article, you… Adıyaman
Tracing the evolution of bending knowledge, bending machines, bender tooling
If you were to read a collection of tube bending articles written at various times over the last three decades, you might be surprised by how much bending technology has changed, especially within the last 20 years. Benders have advanced, new features… Adıyaman
Face masks hurting your ears? These easy solutions can help
Face masks hurting your ears? These easy solutions can help In this period of the Covid-19 pandemic, a protective mask has become a common object of use to contain virus transmission. The imminent need for masks has led many governments to… Adana
Can I still use my ticket if I miss my flight on Spirit Airlines
Air travel, marked by its efficiency and connectivity, is not immune to the unpredictability of life. Missed flights can happen for various reasons, leaving passengers with questions about the fate of their tickets and potential options for salvaging… Adıyaman
Jess Luzardo throws 6 scoreless innings vs. Padres
SAN DIEGO It's easy to get hung up on failure as a Major Leaguer. Everything seems like the all-important element. Marlins left-hander Jesúú s Luzardo is no different. His current struggles have actually paralleled the club's as it battles to… Afyonkarahisar
Everyone Is Buying Mirrors Right Now
Everyone Is Buying Mirrors Right Now 2020 was the year our appearances mattered the least. There were no parties to go to, no fancy dinners, no 500-person weddings. Yet, ironically, wall mirror interest skyrocketed. CB2 reported that mirrors… Afyonkarahisar
Şişli İlçelerinde Parçalanacak hurda kazalı hasarlı araçlarınız alınır.0216667110
Şişli İlçelerinde Parçalanacak hurda kazalı hasarlı araçlarınız alınır.0216667110 Istanbul
Science behind Surgical Gowns: An Overview
An overview of the various parameters to consider for producing surgical gowns beginning with raw materials, methods of sterilisation to building parameters and more. Surgical gowns used by medical professionals are essential… Aksaray
How Matthew Stafford Believes Rams Can Avert '
Tremendous Bowl Hangover' within 2022 quarterback Matthew Stafford, who signed a large extension, though Aaron Donald demonstrated his demand towards return.The Rams in addition preserved in the direction of insert celebrities as a result of the market… Adıyaman
What is Phenoxyethanol in Skin Care? Is it Safe?
What is Phenoxyethanol in Skin Care? Is it Safe? Is there anything more annoying than cleaning out the fridge to find that half the food in it has spoiled? Well, without some type of preservative, that’s exactly what would happen to your skin… Afyonkarahisar
Cast film machine technology fuels growing stretch film market
Machinery makers are being challenged to address the increasing demands of cast stretch film — getting film thinner and thinner while improving strength and flexibility. New technologies introduced at K 2013 have improved even more. In general,… Adıyaman
Một Số Cách Đánh Tài Xỉu Online Hay Nhất Hiện Nay Trong Tháng 10/2023
Chắc hẳn bạn đang tìm kiếm những công thức đánh Tài xỉu online hiệu quả nhất, đúng không? Chúng tôi sẽ chia sẻ với bạn một loạt các chiến thuật và cách để đánh Tài xỉu online tại trang web cá cược hàng đầu hiện nay tại nhà cái 10 một cách thông… Amasya
Design and Development of Telescopic Conveyor
Design and Development of Telescopic Conveyor This telescopic belt conveyor is an effective and ergonomic alternative to labour-intensive routines. Operators can move heavy or awkward packages into or out of a container/truck rapidly with little… Adıyaman
Welcome To Malviya Nagar Escorts
If you want to call an escorts agency, then you should first clarify about it that it is a good and safe agency, then you can make your booking in it, due to which you will not have any problem and if you are a good If you want to enjoy agency then make… Adana
Official Website https://www.cryptoalertscam.com/btc-3-0-evex-reviews/ https://www.cryptoalertscam.com/immediate-folex-review/ https://www.cryptoalertscam.com/immediate-xport-ai-review/ https://www.facebook.com/btc3.0evex/ BTC 3.0 Evex comes with a host… Adıyaman
What's New With Nonwovens in the Medical Industry?
What's New With Nonwovens in the Medical Industry? What's New With Nonwovens in the Medical Industry? The utilization of medical nonwoven fabric has outpaced woven materials in recent years. Even when traced back to their rapid adoption… Adıyaman
Features to Look for When Selecting a Safety Harness
The full-body Harness Buckle is perhaps the most common piece of equipment in the fall protection industry. It is also possibly one of the most under-considered. A harness is a necessity for almost any worker in a fall arrest, fall restraint, or… Aksaray
Benefits Of Using Electric Bikes
We’re living in the future! In all aspects, technology has improved our lives, whether that be through breakthrough medicines, renewable energy or new sporting ideas to keep us active (and living) longer… one of these changes is an Electric Bike. You may… Adıyaman
Difference between PP Board and PVC Board
Difference between PP Board and PVC Board The difference between the PP board and PVC board cannot be confused. Most people think there is no difference between pp board and PVC board, and they often think they are the same. Otherwise, it is not the… Adıyaman
Vitrified Grinding Wheel suppliers
1. Production Description Vitrified Straight Grinding Wheels For Weld uses selected high-quality Aluminum oxide material to achieve good strength and durability. Its advantages include high grinding ratio, strong stability and long service life. It… Adıyaman
How To Apply An V Part Wig Human Hair
An V Part Wig is as convenient as a wig which can quickly install. It also has natural look because it allows for a part of hair leave out at the crown. Great blending between hair texture and color is the key to make hair as natural as possible. Most of… Adıyaman
Upon currently being robbed of the Entertaining section
1987 was the inaugural yr for Ahsahta Push, an allpoetry publisher at Boise Region Faculty with the deft slogan, oetry Is Artwork.?Their attention was upon highlighting and trying to keep operates of poetry in opposition to the American West, and in… Afyonkarahisar