Browse Topic: Fabrics and textiles

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Cairene Car-Culture: How are Automobility and Social Behavior Linked to The Development of The Soundscape and Urban Fabric of Cairo.2025-01-006905/05/2023
Cairo’s soundscape has witnessed changes due to the ongoing urban structure developments that accommodate the number of vehicles passing through the city. The soundscape produced by this growing automobility is affected not only by vehicles but also by their owners' behavior. Cairenes use their cars as a communication tool and an extension of private space. By viewing the vehicle as a component of the soundscape as well as a space that filters it, this study examines the synergy between social behavior, automobility, urban structure, and their interdependent relationship on the soundscape of Cairo. The study responds to literature elaborating on acoustic ecology, car culture, urban structure, and social behavior. The methodology applied in this study follows practice-based phenomenological research while documenting and reflecting on car cultural practices in Cairo from an aural perspective. Grounded theory contextualizes the analysis of archived audio and video material, semi
Abd El Naby, Abla Mohamed
Technical Paper
Sensors Integrated in Clothing Monitor Heart RateTBMG-4553304/01/2022
Stretchable, bendable “smart” textiles are poised to reshape clothes of all kinds, creating new opportunities for integrating advanced monitoring technologies into everyday items. Researchers are applying neuroscience and psychophysiology to build responsive technologies like those integrated in smart textiles. They found that wearable sensor systems don't seem to perform as well in monitoring heart rates as traditional electrodes.
SintzUSER, Jeneane
Magazine Article
An Integrated Approach for Simulation of the RTM Process2022-01-038703/29/2022
In the preform preparation stage of the RTM process, the fabric is draped on the mold along the geometry. Before the filling and warpage analysis, the draping analysis will be performed to get the fabric orientation. Due to the anisotropy of the fabric material, the main direction of the material has a significant influence on the overall flow behavior and warpage of the product. In this study, the advanced simulation approach for the RTM process is demonstrated. The filling and warpage analysis integrate with the draping simulation result from AniForm. The influences of fabric shearing and fiber orientation on the resin flow and warpage in RTM process is studied. With more accurate fabric orientation prediction methods, the accuracy of predicting fabric ply orientation is improved and more accurate infusion and product warpage simulation results can be obtained.
Bora, Anand
Technical Paper
Instrumental Color Difference Measurement for Exterior Finishes, Textiles, and Colored TrimJ1545_20211212/30/2021
The practice applies to parts and materials used in vehicle manufacture which are intended to be acceptable color matches to a specified color standard. This practice is intended for use with parts or materials that are opaque or nearly so and does not apply to transparent materials. Materials covered by this practice include topcoat paint finishes, interior soft trim, interior and exterior hard trim, and exterior film.
Textile and Flexible Plastics Committee
Technical Paper
Carbon Fiber Fabric and Epoxy Resin Wet Lay-Up Repair Material Part 5 - Carbon Fiber Fabrics, Plain Weave, 193 g/m2, and Epoxy ResinAMS2980/5A (Current)09/24/2021
This Material Specification defines the requirements of carbon fiber fabric and epoxy resin systems used for wet lay-up repair of carbon fiber reinforced epoxy structures, qualified according to AMS2980/1 and AMS2980/2. Unless otherwise specified by the drawing, the order or the inspection schedule, the present specification shall be used in conjunction with the referenced documents.
AMS CACRC Commercial Aircraft Composite Repair Committee
Material Specification
Test Method for Determining Cold Cracking of Flexible Plastic MaterialsJ323_202109 (Current)09/15/2021
This SAE Recommended Practice is applicable for determining the cold characteristics of flexible plastic materials, as applicable. It consists of three different methods for determining low-temperature properties of materials depending on type of material and end use. The method used shall be as specified by the contractual parties.
Textile and Flexible Plastics Committee
Recommended Practice
Clamp, Loop Style, Cushioned, With Wedge, High Temperature, MetricMA2150/3A08/18/2021
SCOPE IS UNAVAILABLE.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Technical Paper
Carbon Fiber and Fiberglass Epoxy/Prepreg Products with 350 °F (177 °C) Cure for Aerospace Applications: Type 42, Class 4, Grade 48, Style 108AMS6891/4 (Current)03/10/2021
The intent of this specification is for the procurement of the material listed on the QPL and, therefore, no qualification or equivalency threshold values are provided. Users that intend to conduct a new material qualification or equivalency program must refer to the Quality Assurance section of this base specification, AMS6891.
AMS P17 Polymer Matrix Composites Committee
Material Specification
Carbon Fiber and Fiberglass Epoxy/Prepreg Products with 350 °F (177 °C) Cure for Aerospace Applications: Type 34, Class 4, Grade 294, Style 7781AMS6891/3 (Current)03/10/2021
The intent of this specification is for the procurement of the material listed on the QPL and, therefore, no qualification or equivalency threshold values are provided. Users that intend to conduct a new material qualification or equivalency program must refer to the quality assurance section of this base specification, AMS6891.
AMS P17 Polymer Matrix Composites Committee
Material Specification
3D Printing with Wood-Based InkTBMG-3847402/01/2021
The way in which wood grows is controlled by its genetic code, which gives it unique properties in terms of porosity, toughness, and torsional strength. But wood has limitations when it comes to processing. Unlike metals and plastics, it cannot be melted and easily reshaped, and instead must be sawed, planed, or curved. Processes that involve conversion — to make products such as paper, cards, and textiles — destroy the underlying ultrastructure, or architecture, of the wood cells.
Magazine Article
Smart Fabric Detects and Collects Space DustTBMG-3850902/01/2021
Researchers have developed an acoustic fabric so sensitive to vibrations that it can detect impacts from microscopic high-velocity space particles. A terrestrial application of these fabrics could be for blast detection and in the future, to act as sensitive microphones for directional gunshot detection.
Magazine Article
Carbon Fiber and Fiberglass Epoxy Prepreg Products with 350 °F (177 °C) Cure for Aerospace ApplicationsAMS6891-TEST-REC (Historical)12/30/2020
The intent of this specification is for the procurement of carbon fiber and fiberglass epoxy prepreg products with 350 °F (177 °C) cure for aerospace applications; therefore, no qualification or equivalency threshold values are provided. Users that intend to conduct a new material qualification or equivalency program must refer to the production quality assurance section (4.3) of this base specification, AMS6891.
AMS P17 Polymer Matrix Composites Committee
Material Specification
Carbon Fiber and Fiberglass Epoxy Prepreg Products with 350 °F (177 °C) Cure for Aerospace ApplicationsAMS6891 (Current)12/30/2020
The intent of this specification is for the procurement of carbon fiber and fiberglass epoxy prepreg products with 350 °F (177 °C) cure for aerospace applications; therefore, no qualification or equivalency threshold values are provided. Users that intend to conduct a new material qualification or equivalency program must refer to the production quality assurance section (4.3) of this base specification, AMS6891.
AMS P17 Polymer Matrix Composites Committee
Material Specification
Carbon Fiber and Fiberglass Epoxy/Prepreg Products with 350 °F (177 °C) Cure for Aerospace Applications: Type 40, Class 1, Grade 196, Style 6K-PWAMS6891/2 (Current)12/29/2020
The intent of this specification is for the procurement of the material listed on the QPL; therefore, no qualification or equivalency threshold values are provided. Users that intend to conduct a new material qualification or equivalency program must refer to the Quality Assurance section of this base specification, AMS6891.
AMS P17 Polymer Matrix Composites Committee
Material Specification
Wool-Like Material Remembers and Changes ShapeTBMG-3796511/01/2020
Researchers have developed a biocompatible material that can be 3D-printed into any shape and pre-programmed with reversible shape memory. The material is made using keratin, a fibrous protein found in hair, nails, and shells. The researchers extracted the keratin from leftover Agora wool used in textile manufacturing.
Magazine Article
Method of Testing Resistance to Scuffing of Trim MaterialsJ365_202009 (Current)09/18/2020
This test can be used to determine the resistance to scuffing of test specimens such as fiberboards, fabrics, vinyl-coated fabrics, leathers, and similar trim materials.
Textile and Flexible Plastics Committee
Technical Standard
Breathable Electronics for Wearable TechnologiesTBMG-3762809/01/2020
Engineering researchers have created ultrathin, stretchable electronic material that is gas-permeable, allowing the material to “breathe” and making it more comfortable for users — especially for long-term wear.
Magazine Article
Smart Fabrics with Bioactive Inks Monitor the Body by Changing ColorTBMG-3762909/01/2020
Biomaterial-based inks have been developed that respond to chemicals released from the body (e.g. in sweat) by changing color. The inks can be screenprinted onto textiles such as clothes, shoes, or even face masks in complex patterns and at high resolution, providing a detailed map of human response or exposure. The technology could simultaneously detect and quantify a wide range of biological conditions, molecules, and possibly pathogens over the surface of the body using conventional garments and uniforms.
Magazine Article
Smart Textiles Powered by Soft Transmission LinesTBMG-3735608/01/2020
EPFL researchers have developed electronic fibers that, when embedded in textiles, can collect a wealth of information about our bodies by measuring subtle and complex fabric deformations. Their technology relies on transmission line theory and offers a host of applications, such as in healthcare and robotics.
Magazine Article
Smart Fabrics Monitor Body by Changing ColorTBMG-3734808/01/2020
Researchers have developed biomaterial-based inks that respond to and quantify chemicals released from the body (e.g., in sweat and potentially other biofluids) or in the surrounding environment by changing color. The inks can be screen printed onto textiles such as clothes, shoes, or even face masks in complex patterns and at high resolution, providing a detailed map of human response or exposure.
Magazine Article
Graphene Smart Textiles for Heat-Adaptive ClothingTBMG-3745608/01/2020
Scientists have created a prototype garment to demonstrate dynamic thermal radiation control within a piece of clothing by utilizing the thermal properties and flexibility of graphene. The development also opens the door to new applications such as interactive infrared displays and covert infrared communication on textiles.
Magazine Article
Fabric Allows Wearers to Control Electronic Devices Through ClothingTBMG-3704506/01/2020
A new technique transforms existing cloth items or textiles into self-powered e-textiles containing sensors, music players, or illumination displays using simple embroidery without the need for expensive fabrication processes requiring complex steps or expensive equipment. The fabric also keeps the wearer safe from viruses and bacteria.
Magazine Article
Phenolic SMC for Automotive Fire Resistance2020-01-077104/14/2020
Phenolic resins that meet REACH compliance and contain lower free-formaldehyde are safer to handle, compound, and mold. These resin systems do not contain any styrene or require any fillers to achieve their rated fire resistance. A commercial phenolic sheet-molding compound (SMC) is presented that achieves a 2-minute cycle time and addresses the unique requirements in an electrified vehicle architecture. This new SMC material includes all the industrially relevant considerations including material processing, shelf life, and surface finish. Other topics such as material hybridization and comparison to incumbent materials also discussed. The resin system uses a water-based phenolic resole which is acid-cured. This chemistry presents several unique challenges and opportunities for the industry such as managing formulation pH and appropriate methods for quality control. A demonstrator battery cover highlights the superior fire performance, impact resistance, and light weighting that is
Swentek, Ian, Ball, Cedric A., Greydanus, Stephen, Nara, Kameswara Rao
Technical Paper
Effects of Helical Carbon Nanotubes on Mechanical Performance of Laminated Composites and Bonded Joints2020-01-002903/10/2020
Most composite assemblies and structures generally fail due to weak interlaminar properties and poor performance of their bonded joints that are assembled together with an adhesive layer. Adhesive failure and cohesive failure are among the most commonly observed failure modes in composite bonded joint assemblies. These failure modes occur due to the lack of reinforcement within the adhesive layer in transverse direction. In addition, the laminated composites fail due to the same reason that is the lack of reinforcement through the thickness direction between the laminae. The overall performance of any composite structures and assemblies largely depends on the interlaminar properties and the performance of its bonded joints. Various techniques and processes were developed in recent years to improve mechanical performance of the composite structures and assemblies, one of which includes the use of nanoscale reinforcements in between the laminae and within the adhesive layer. However
Sritharan, Ramanan, Askari, Davood
Journal Article
Leading Women in Engineering & Science: Yolita Wildman Nugent, Director, Advanced Soft Systems Integration, FlexTBMG-3625003/01/2020
Magazine Article
Q&A: Electrically Conductive Coated Yarn for Wearable, Washable FabricsTBMG-3598202/01/2020
Professor Genevieve Dion, Director of Drexel University's (Philadelphia, PA) Center for Functional Fabrics, is collaborating with other experts to coat yarn with the highly conductive, two-dimensional material MXene. They demonstrated that the yarn could be used with standard textile manufacturing techniques to create wearable conductive fabric.
Magazine Article
Threads Detect Gases When Woven into ClothingTBMG-3598902/01/2020
A fabrication method was developed to create dyed threads that change color when they detect a variety of gases. The threads can be read visually or even more precisely by use of a smartphone camera, to detect changes of color due to analytes as low as 50 parts per million. Woven into clothing, the gas-detecting threads could provide a reusable, washable, and affordable safety asset in medical, workplace, military, and rescue environments.
Magazine Article
Novel Applications of Electrospinning Could Improve DevicesTBMG-3563612/01/2019
When you visit Andrew Steckl’s lab at the University of Cincinnati, you see a nondescript glass box that weaves together different fibers. He sees endless possibility.
Magazine Article
Washable Sensor Can Be Woven Into MaterialsTBMG-3572612/01/2019
A low-cost sensor was developed that can be interlaced into textiles and composite materials, paving the way for smart clothing that can monitor human movement. The embedded microscopic sensor is able to recognize local motion through the stretching of woven yarns treated with graphene nanoplatelets that can read the body's activity.
Magazine Article
Bioresorbable Patch Offers New Alternative for Arterial HealingTBMG-3563212/01/2019
When a patient experiences 70 percent or greater stenosis in the carotid artery — a condition that can cause lack of cerebral blood flow, stroke, and in some cases, death — surgeons perform a procedure known as carotid endarterectomy (CEA) to remove the plaque causing the artery stenosis.1,2 The procedure consists of a longitudinal incision made from the common to the internal carotid artery, allowing for removal of the plaque that deposits in the bifurcation.
Magazine Article
Flexible Sensor Mimics Human Finger SkinTBMG-3550311/01/2019
Artificial skin tactile sensors can feel the similar pressure and vibration felt by human skin. The new sensors can detect more sensitive tactile than the existing ones. The skin-based sensor detects both pressure and vibration at the same time and effectively measures textile. The new sensors also convert the surface roughness of a matter into electrical signals to identify physical stimulations with more sensitivity and accuracy.
Magazine Article
Primer, Anodic Electrodeposition for Aircraft ApplicationsAMS3144A (Current)10/17/2019
This specification establishes the requirements for a waterborne, corrosion inhibiting, chemical and solvent resistant, anodic electrodeposition epoxy primer capable of curing at 200 to 210 °F (93 to 99 °C).
AMS G8 Aerospace Organic Coatings Committee
Material Specification
Tensile and Fatigue Behavior of Shallow Cryogenically Treated EN19 Alloy Steel2019-28-010010/11/2019
Tensile and axial fatigue tests were conducted on shallow cryogenically treated EN19 medium carbon alloy steel to investigate its mechanical behavior. The test samples were conventionally heat treated then oil quenched at room temperature. Followed by the samples were kept for shallow cryogenic treatment to -80°C for 8 hours using liquid nitrogen. Then the samples were tempered in a muffle furnace to relieve the induced residual stresses. Tensile and axial fatigue test were carried out on both treated and non-treated samples to measure its tensile strength and fatigue behavior respectively. Microscopic examination also had done to compare the effect of shallow cryogenic treatment on its microstructure. The results exposed that there is an increase in the tensile strength and reduction in fatigue life of shallow cryogenically treated samples over base metal and improved wear resistance.
Sekar, Loganathan, Raj, Rajendran, Arasan, Tamil
Technical Paper
Natural and Artificial Weathering of Automotive Leather, Leatherette and Textile2019-28-009110/11/2019
This paper presents the natural and artificial weathering behavior of different soft skin materials such as leather, leatherette and textiles used for automotive seat cover applications. The objective of this study was to understand the physical and aesthetical changes occurring at these flexible materials under sun UV light and heat exposure. The natural weathering study under glass exposure was carried out as per ASTM G 24 at natural weathering site location and artificial weathering as per SAE J2412 at lab. The material was observed for surface changes such as color, texture, crack and physical changes like flexibility and hardness during the exposure. The sample exposed at natural weathering data for every 15 days were recorded, and artificial weathering for every 100 hours were recorded. Light and dark color materials were tested to understand the effect of color and UV light resistance as well as various textures were studied to understand the effect of various texture and
Palaniappan, Elavarasan
Technical Paper
Mechanical and Corrosion Behaviour of Al 7075 Composite Reinforced with TiC and Al 2 O 3 Particles2019-28-009410/11/2019
Various research regarding new types of fabrication and modifications of Aluminium alloy to improve the existing properties are going on. The wide range application of aluminium alloy is in aerospace and Automobile Industries. The demand for this material improved by mechanical properties with little to zero increment in weight. The current work is based on the fabrication of hybrid aluminium metal matrix composites with the addition of TiC (Titanium Carbide) and Al2O3 (Aluminium Oxide) reinforcement particle using stir casting technique. Three types of hybrid composite samples were prepared based on the weight percentage 5% Al2O3+0% TiC (sample-1), 8% Al2O3 + 12% TiC (sample-2), 20% Al2O3+15% TiC (sample-3). The objective of the study is to analyze the mechanical and corrosion properties of the hybrid composite with the influence of the reinforcement and varying the weight fraction of the particles. Overall, It is observed that a gradual increase in the hardness value in sample-1(83
Jaiswal, Subham, Rajamurugan, Govindasamy, Krishnasamy, Prabu, Shaswat, Yashwardhan, Kaushik, Mishra
Technical Paper
Conductive Textiles Connect Multiple WearablesTBMG-3509309/01/2019
Researchers at the National University of Singapore (NUS) have invented a completely new way for wearable devices to interconnect. They incorporated conductive textiles into clothing to dynamically connect several wearable devices at once. This “wireless body sensor network” allows devices to transmit data with 1,000 times stronger signal than conventional technologies, meaning the battery life of all devices is dramatically improved. Wireless networks of these wearable devices on a body have future applications in health monitoring, medical interventions, and human-machine interfaces.
Magazine Article
Thermal Conductivities of Some Polymers and CompositesTBMG-3486808/01/2019
Thermoset polymers are good electrical insulators that are used in applications ranging from electronics to composite armor. They are rather poor thermal conductors, however.
Magazine Article
Flexible High-Energy Textile Lithium Battery Designed for WearablesTBMG-3497308/01/2019
Researchers at Hong Kong Polytechnic University (PolyU) have developed a highly flexible, high-energy textile lithium battery that offers more stable, durable, and safe energy supply for wearable electronics with a myriad of applications, including healthcare monitoring and intelligent textiles.
Magazine Article
Tuning Material Color and Thermal Properties SeparatelyTBMG-3489808/01/2019
The color of a material can often tell how it handles heat. With clothing, for example, the darker the pigment, the warmer you're likely to feel on a hot day. Likewise, the more transparent a glass window, the more heat it can let through. A material's responses to visible and infrared radiation are often naturally linked.
Magazine Article
Textile Cools or Insulates AutomaticallyTBMG-3491508/01/2019
Researchers have created a fabric that automatically regulates the amount of heat that passes through, depending on conditions; for example, when conditions are warm and moist — such as those of a sweating body on a summer day — the fabric allows infrared radiation (radiant heat) to pass through. When conditions become cooler and drier, the fabric reduces the heat that escapes. Infrared radiation is a primary way the body releases heat and is the focus of this new technology.
Magazine Article
Thermal Conductivities of Some Polymers and Composites19AERP08_0908/01/2019
Assessing the performance of polymers used in structural armor and filament winding applications. Army Research Laboratory, Aberdeen Proving Ground, Maryland Thermoset polymers are good electrical insulators that are used in applications ranging from electronics to composite armor. They are rather poor thermal conductors, however. For encapsulation of electronic components and devices, there is a huge amount of literature on filled polymers, particularly epoxies. One source provides a recent review of thermal conductivity (Kt) of filled polymers with emphasis on carbon nanotube loading. As an example of a low Kt polymer, a Kt of 0.3 watts per meter per degree kelvin (W/MK) for unfilled polyurethane from an unidentified source has been cited, with higher values for filled resin. Measurements have also been reported on particle-filled polypropylene with a neat resin Kt of 0.27 W/MK. These thermal conductivities are higher than those of most epoxies, and much lower than those of metals
Magazine Article
Self-Powered, Washable, Wearable DisplaysTBMG-3463206/01/2019
Clothing usually is formed with textiles and has to be both wearable and washable for daily use; however, smart clothing has had a problem with its power sources and moisture permeability, which causes the devices to malfunction. To solve this problem, a textile-based, wearable display module technology was developed that is washable and does not require an external power source.
Magazine Article
Designs to Dye for: Autonomy's New-Materials Revolution19AVEP05_0505/01/2019
From pineapples to bacteria, Envisage's research is focused on new mobility's ‘inside’ story. Evolving vehicle engineering constantly reshapes vehicle architectures. But along with electrified drive-trains and autonomous capabilities is the need for a mindset shift in materials, opening the way for new sustainable solutions in color, materials and finish (CMF). Future cabins could have pineapple, banana, coconut and eucalyptus among the material solutions-with bacteria playing a potentially positive role. All these sources are at play for research designer Sammie Mayers-Nissen and her colleagues at Envisage, the U.K.-based specialist engineering services provider helping to find sustainable alternatives to plastic, leather and harmful dyes that still meet quality, durability and cost demands. “As always, in terms of R&D of alternative materials and color, production-cost consideration is the massive driver, with performance very close behind,” said Mayers-Nissen.
Birch, Stuart
Magazine Article
Environmental Degradation of TextilesAIR1490C (Current)04/24/2019
Since cargo restraint devices made with textiles should have a predictable service life, there should be data available so that predictions can be made. This document compiles available information on textiles of the types used in air cargo restraint devices and reviews the degradation characteristics of each. Textiles are used primarily in cargo restraint nets on air cargo pallets and nonstructural containers, restraint nets installed in cargo aircraft, and similar applications.
AGE-2 Air Cargo
Information Report
Silver Nanowires Promise More Comfortable Smart TextilesTBMG-3427404/01/2019
Researchers have developed a simple, scalable, and low-cost capillary-driven self-assembly method to prepare flexible and stretchable conductive fibers that have applications in wearable electronics and smart fabrics.
Magazine Article
Thin, Durable Heating PatchesTBMG-3414004/01/2019
Thin, durable heating patches were created using intense pulses of light to fuse tiny silver wires with polyester. Their heating performance is nearly 70 percent higher than similar patches. The inexpensive patches can be powered by coin batteries and can generate heat where the human body needs it since they can be sewed on as patches.
Magazine Article
Evaluation of Peel Ply Surface Preparation of Composite Surfaces for Secondary BondingTBMG-3336712/01/2018
Lightweight composite structures offer significant long-term cost-saving opportunities for the U.S. Army as replacements for traditional metal structures. However, high-strength economical bonding processes must be developed to join composites in order for them to be viable replacements. The Army is exploring approaches, also under evaluation in the commercial aerospace industry, to reduce the process steps associated with composite bonding.
Magazine Article
Fiber-Reinforced Thermoplastic CompositesTBMG-3336912/01/2018
Reinforcing polymers with strong/stiff fibers is nothing new. Such materials have been used pretty much since aircraft were first created. In those pioneering days, wings were reinforced with woven cotton, or silk fabric skins, impregnated with nitrocellulose ‘dope’ to seal against the wind, and laminated wood was reinforced with fabric bonded with adhesive. Although there have been a myriad of developments along the way from those early days to where we are now in the 21st century, the principles of reinforcement are much the same.
Magazine Article
Polyacrylonitrile and activated carbon composite for electric double layer capacitors2018-36-031009/03/2018
Electrospinning of polymers blends solutions offers the potential to produce nanofibers for using in a variety of applications. Here, we report the synthesis of nanofibers with polyacrylonitrile (PAN) and activated carbon (AC) composite by employing this technique. As-produced material is an electrical conductive and high-surface material electrode with outstanding electrochemical properties, which we explore electric double layer capacitors (EDLCs) coin cell devices. Our results show that EDLCs manufactured with PAN/AC composite have fairly high specific capacitance, low internal impedance and high lifetime. All these results encourage further development of PAN/AC materials as electrode for EDLCs and Li- Air batteries devices. This new generation of devices are opening niches of applications on multi-millionaire markets such as electric vehicles & solar and wind power systems. Positions and opinions advanced in this paper are those of the author(s) and not necessarily those of SAE
Real, Carla Giselle Martins, Vicentini, Rafael, Nunes, Willian Gonçalves, Boas, Otávio Vilas, Alves, Thayane Almeida, Soares, Davi Marcelo, Zanin, Hudson
Technical Paper
High-Kinetic-Energy Penetrator Shielding and High-Wear-Resistance Materials Fabricated with Boron Nitride Nanotubes and BNNT Polymer CompositesTBMG-3283109/01/2018
In recent years, anti-penetration materials have been more widely used for armor, bulletproof vests, and micrometeoroid and orbital debris protection layers for space-suits, space vehicles, and structures. Micrometeoroids develop very high kinetic energies as they travel through space, and pose a significant hazard to spacecraft and astronauts. The velocities of micrometeorites can reach 20 kilometers per second prior to impact on the lunar surface. Therefore, a new protective system utilizing new materials is needed to effectively shield the space vehicles and structures against the high-kinetic-energy penetrators as well as provide penetration-resistant spacesuits. In order to maximize the protection ability against high-kinetic-energy penetrators, the following two major material properties should be considered: high hardness for rebounding and/or gross mechanical deformation of the penetrator, and high toughness for effective energy absorption during the mechanical deformation (and
Magazine Article
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