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• The CNT/PNF electromagnetic wave absorption aerogel was prepared through sol-gel method and freeze-drying method. The RL min of CNT/PNF aerogel was −34.4 dB at 11.76 GHz, and the EAB was 3.44 GHz (8.88 GHz to 12.32 GHz). • The CoNi/CNT/PNF composite aerogel was obtained with the introduction of CoNi particles into CNT/PNF aerogel by in-situ growth and thermal annealing. Its RL min reached −44.7 dB at 6.88 GHz at the thickness of 4.0 mm, meanwhile, the EAB was 12.32 GHz (5.68 GHz to 18 GHz), covering the entire X-band, Ku-band and most of the C-band. • The 3D conductive/magnetic cage-like skeleton was constructed by PNFs and CNTs intertwining with each other and decorating with CoNi particles. The electromagnetic waves were dissipated in the cage-like skeleton through conduction loss and magnetic loss, in conjunction with multiple reflection, scattering, and absorption, favoring for the enhancement of wave absorption property. Polymer-based aerogels are emerging as promising candidates for lightweight and high performance electromagnetic (EM) wave absorption materials. In this study, an ultralight and rigid poly(p -phenylene benzobisoxazole) nanofiber (PNF) based composite aerogel with excellent EM wave absorption performance was fabricated with cobalt-nickel alloy (CoNi) nanoparticles and carbon nanotubes (CNTs) as magnetic and conductive fillers, respectively. A CNT/PNF composite aerogel was first prepared through a sol-gel and freeze-drying method, and then CoNi nanoparticles were introduced therein through hydrothermal reaction and thermal annealing to obtain the CoNi/CNT/PNF aerogel. CNTs and PNFs were interwoven and constructed a three-dimensional conductive/magnetic cage-like skeleton structure decorating with magnetic CoNi nanoparticles. The cage-like skeleton structure allowed the dissipation of EM waves through multiple mechanisms encompassing conduction loss, magnetic loss, multiple reflection, scattering, and absorption. When its thickness was 4 mm, the CoNi/CNT/PNF aerogel showed a minimal reflection loss of −44.7 dB (at 6.88 GHz), and its broad effective absorption bandwidth covered the entire X-band and Ku-band and most of the C-band (12.32 GHz, from 5.68 GHz to 18 GHz). In addition, the rigid aerogel exhibited an ultralow density (0.107 g/cm3), excellent thermal insulation, and flame retardancy, demonstrating its potential application as a high-performance EM wave absorption material in the fields of aerospace and national defense. [Display omitted] [ABSTRACT FROM AUTHOR]

• Two cross-materials transfer learning strategies were presented to predict the creep rupture life of high-temperature titanium alloys. • The transfer learning models improved the predictions greatly compared to the models obtained by straightly applying commonly employed algorithms on high-temperature titanium alloys. • The robustness of the transfer learning models was confirmed by examining their extrapolation capability on test datasets of different size outside training dataset. High-temperature titanium alloys are the key materials for the components in aerospace and their service life depends largely on creep deformation-induced failure. However, the prediction of creep rupture life remains a challenge due to the lack of available data with well-characterized target property. Here, we proposed two cross-materials transfer learning (TL) strategies to improve the prediction of creep rupture life of high-temperature titanium alloys. Both strategies effectively utilized the knowledge or information encoded in the large dataset (753 samples) of Fe-base, Ni-base, and Co-base superalloys to enhance the surrogate model for small dataset (88 samples) of high-temperature titanium alloys. The first strategy transferred the parameters of the convolutional neural network while the second strategy fused the two datasets. The performances of the TL models were demonstrated on different test datasets with varying sizes outside the training dataset. Our TL models improved the predictions greatly compared to the models obtained by straightly applying five commonly employed algorithms on high-temperature titanium alloys. This work may stimulate the use of TL-based models to accurately predict the service properties of structural materials where the available data is small and sparse. [Display omitted] [ABSTRACT FROM AUTHOR]

Researchers at The University of Queensland in Australia are exploring the use of liquid metals in 4D printing technology. By incorporating liquid metal nanoparticles into 3D-printing resins, the researchers have developed programmable, shapeshifting polymers that can change shape when manipulated by an infrared laser. This technology has potential applications in soft robotics, medical devices, consumer electronics, and additive manufacturing. The researchers believe that this breakthrough could lead to advancements in fields such as aeronautical engineering, medical devices, and consumer innovations. [Extracted from the article]

• Ti 2 AlNb-based alloy was in-situ prepared and manufactured through twin-wire dual-electron beam AM technology. • The microstructure evolution of deposited samples under different solution temperatures was revealed. • The influence mechanism of the aging treatment on the phase precipitation and mechanical performance were discussed. • The morphology and proportion of the O-phase and its effect on the mechanical properties under different aging temperatures and times were studied. Thanks to its excellent high-temperature performance and moderate density, Ti 2 AlNb-based alloy is considered to be a new generation of high-temperature structural material in the aerospace field. However, its application is restricted currently due to the limitations of traditional processing methods. Recently, our group first successfully prepared this alloy with an unconventional approach named wire-based in-situ additive manufacturing (AM) technology, and great mechanical performance has been obtained. The unbalanced thermal process of AM easily causes inconsistent or undesired microstructures, as well as mechanical properties. Therefore, in this study, we further carried out post-heat treatment research on the as-printed sample so as to optimize its mechanical performance. Results show that the α 2 -phase will precipitate from the as-deposited samples (B2/β+O) after solution treatment(ST), while all precipitates were dissolved to the B2/β-matrix when the solution temperature was 1100 °C. The aging treatment(AT) promoted a great number of O-phases precipitated and led to an increase in its proportion. With the increase in aging temperature, the tensile strength decreased (995 to 821 MPa) gradually coupling the increase of fracture strain (1.65% to 2.12%), while the aging duration time did not show an obvious effect on its performance. In addition, after proper heat treatment, the high temperature (650 °C) tensile strength of the samples was as high as 818 and 792 MPa. This research not only promotes the development of Ti 2 AlNb-based alloy fabricated through in-situ AM, but also facilitates its further application in the aerospace field. [ABSTRACT FROM AUTHOR]

This document is a compilation of excerpts from various sources, providing different viewpoints on financial matters. The first excerpt discusses the quarterly results and future plans of a company called J, including its separation into two segments and a new strategic plan. The second excerpt focuses on the quarterly results and outlook of ATI INC., highlighting its performance in the aerospace and defense sector. The third excerpt presents several charts that indicate various trends and signals in the market, such as the performance of different sectors and indicators of market volatility. [Extracted from the article]

Researchers at Delft University of Technology have developed an integrated methodology for predicting the Remaining Useful Life (RUL) of composite structures under in-plane compressive fatigue loading. By using Deep Neural Networks (DNN) trained with Guided wave-based damage indicators, they were able to monitor damage mechanisms contributing to structural failure and evaluate RUL predictions with delamination progress. The study's findings suggest that the proposed DNN frameworks can effectively assess fast and slow degradation scenarios, potentially enhancing the safety and longevity of critical aerospace structures. The research was supported by Horizon 2020 and the Eu Framework Programme For Research And Innovation Marie Sklodowska-curie Actions. [Extracted from the article]

• The fracture behavior of the Hfnbtatizr refractory HEA was investigated. • The HEA exhibits a remarkably high fracture toughness of K JIC = 211 MPa•m1/2. • Fully-ductile fracture mode with the formation of kink bands was observed. • The excellent damage-tolerance plus high strengths in a wide temperature range endow this HEA a promising structural material. High-entropy alloys (HEAs) with face-centered cubic (FCC) phase such as CoCrFeMnNi or CoCrNi generally exhibit ultra-high fracture toughness but relatively low strength. In contrast, body-centered cubic (BCC) HEAs often display higher strengths, but the few reports on fracture toughness measurement demonstrate low toughness values. Here we show that the BCC HfNbTaTiZr refractory HEA, which possesses a combination of high strength, good tensile ductility and excellent high-temperature properties, also exhibits a remarkably high fracture toughness. By using the "single specimen" compliance method for J -integral measurement according to the ASTM E1820–17 standard, its fracture toughness K JIC was experimentally determined to be 210 MPa m1/2, which renders this HEA among the toughest metallic materials. The excellent damage tolerance makes the HEA promising for applications as high-temperature structural materials such as in aerospace field. [ABSTRACT FROM AUTHOR]

• Ti 5 Si 3 with two-scale network architecture was introduced into Ti-4Mo composite. • The composite displays superior oxidation resistance up to 800 °C. • A multi-component surface layer in-situ formed during oxidation. • The adhesion performance of the oxide layer was investigated. • The formation and protection mechanisms of the oxide layer were investigated. There is keen interest in using Ti alloys as lightweight structural materials for aerospace and automotive industries. However, a long-standing problem for these materials is their poor oxidation resistance. Herein, we designed and fabricated a Ti 5 Si 3 reinforced Ti-4(wt.%)Mo composite with two-scale network architecture by low energy milling and spark plasma sintering. It displays superior oxidation resistance at 800 °C owing to the in-situ formation of a multi-component surface layer. This oxide layer has a dense grain size gradient structure that consists of an outer TiO 2 layer and an inner SiO 2 -padding-TiO 2 layer, which has remarkable oxidation resistance and thermal stability. Furthermore, it was revealed that the hitherto unknown interaction between Ti 5 Si 3 reinforcement and nitrogen during oxidation would contribute to the formation of a TiN nano-twin interface layer, which accommodates the thermal mismatch strain between the oxide layer and matrix. This, along with high adhesion, confers excellent thermal cycling life with no cracking or spallation during long-term oxidation. In this regard, the secure operating temperature of this new composite can be increased to 800 °C, which provides a design pathway for a new family of Ti matrix composites for high-temperature applications. [Display omitted] [ABSTRACT FROM AUTHOR]

• MLDS machine learning method was applied in aluminum alloy composition design. • Strength, plasticity and toughness of aluminum alloy were optimized simultaneously. • The effect of alloying elements on microstructure and properties was analyzed. • Corresponding physical formula was used to calculate the source of strength and toughness. Aluminum alloys with ultra-strength and high-toughness are fundamental structural materials applied in the aerospace industry. Due to the intrinsic restriction between strength and toughness, optimizing a desirable combination of these conflicting properties is always challenging in material development. In this study, 171 sets of data were curated based on the characteristics of high-strength and high-toughness aluminum alloys in the literature. Then, a machine learning design system (MLDS) with a property-oriented design strategy was established to rapidly discover novel aluminum alloys with ductility and toughness indexes (with elongation δ=8%–10% and fracture toughness K IC =33–35 MPa·m1/2) comparable to those of current state-of-the-art AA7136 aluminum alloys when the ultimate tensile strength (UTS) exceeded approximately 100 MPa, with values reaching 700–750 MPa. With the MLDS for experimental verification, three typical candidate alloys show satisfactory performance with UTS of 707–736 MPa, δ of 7.8%–9.5%, and K IC of 32.2–33.9 MPa·m1/2. The high contents of Mg and Zn alloying elements in the novel alloys form abundant η′ phases, which produce a significant hardening effect, while the reasonable matching of Cr, Mn, Ti and Zr dispersoids refines the grain size. The decreased Cu content compared with that in the AA7136 alloy inhibits the formation of the σ phase and S phase, so that the alloys show high toughness. [Display omitted] [ABSTRACT FROM AUTHOR]

The article offers review on expanded line of thread mills featuring distinct tool families like Threads-all, Thriller-style, Shur-thread, Vario Full-profile, and Gigantic Carbide-insert-style from Emuge-Franken USA.

The article evaluates a range of products including the Cryogenic and Vaccine Vial Grippers from Tempshield LLC, the Tufoil Air Tool Oil from Fluoramics, Inc and the CryoCart from Princeton CryoTech.

The article presents a study which focused on improvement of wire drawing and the optimum drawing conditions for high strength aluminum A6061 alloy wires. Topics discussed include effect of lubricant on drawability of aluminum A6061 alloy wire, examination of optimum drawing condition using finite element method (FEM) analysis and theoretical equation, and effect of annealing temperature on drawability and the surface of drawn.

Ti 2 AlNb-based intermetallic compounds are considered as a new category of promising lightweight aerospace materials due to their balanced mechanical properties. The aim of this study was to evaluate monotonic and cyclic deformation behavior of an as-cast Ti-22A1-20Nb-2V-1Mo-0.25Si (at.%) intermetallic compound in relation to its microstructure. The alloy containing an abundant fine lamellar O-Ti 2 AlNb phase exhibited a good combination of strength and plasticity, and superb fatigue resistance in comparison with other intermetallic compounds. Cyclic stabilization largely remained except slight cyclic hardening occurring at higher strain amplitudes. While fatigue life could be described using the common Coffin-Mason-Basquin equation, it could be better predicted via a weighted energy-based approach. Fatigue crack growth was characterized mainly by crystallographic cracking, along with fatigue striation-like features being unique to appear in the intermetallics. The results obtained in this study lay the foundation for the safe and durable applications of Ti 2 AlNb-based lightweight intermetallic compounds. [ABSTRACT FROM AUTHOR]

Despite the end of Defender production, Terrafirma has invested heavily in expanding its Defender range of products. "Eddie has created something that offers the best of both worlds, swift on the tar but capable on the off-road stuff" There are a lot of middle-aged Defender fans who want to drive a really well-sorted vehicle but at the same time they don't want to upset the neighbours by having some banging eyesore off-roader on the driveway. Well not really, they had a pair of Nissan Patrols with a crew who pampered and looked after them along the way, and it was Eddie who worked long into the night preparing those expedition support vehicles. So when Eddie Priscott, the Director of Terrafirma, called me to come and look at his recently-finished project Defender 110, I knew that it would be his vision of what a Defender should look like. [Extracted from the article]

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The article focuses on Thread Milling Tips for Tricky Aerospace Materials. Topics discussed include thread milling is becoming more popular for a few reasons, says Jamie Rosenberger, threading tool product manager for Allied Machine and Engineering, manufacturer of holemaking and finishing tools; and Rosenberger says thread milling is particularly well suited for challenging, expensive materials, such as tool steel, stainless steel and high-temperature alloys.

The strongest shafts won't mean anything if the transmission's clutches slip and burn up, so we chose Exedy's Stage 2 Clutch Pack kit for 6R80 transmissions. With the pump removed, the transmission's clutches and planetary gear assemblies were removed from the transmission case. Exedy's Stage 2 clutch kit upgrades all of the critical clutches in the 6R80. [Extracted from the article]

The article discusses the engineering of equipment to protect the Mars Science Laboratory (MSL). Topics include the design of heat shield materials by a team led by researcher Helen Hwang, the history of heat shield design in U.S. aeronautics efforts, and the design of a hypersonic inflatable aerodynamic decelerator (HIAD) for a sounding rocket.

The article "Wire EDM in Aerospace" discusses the use of wire electrical-discharge machining (EDM) as an alternative to conventional machining processes in the aerospace industry, particularly for generating fir tree geometries on jet engine disks. Wire EDM is cost-effective, versatile, and efficient in cutting challenging aerospace materials, offering increased production reliability and the ability to adapt quickly to new shape geometries. The AgieCharmilles CUT S 400 Dedicated wire EDM from GF Machining Solutions is highlighted as a machine that improves the overall production of aerospace jet engine turbine disks by cutting fir tree blade patterns with advanced generator technology. [Extracted from the article]

The article "High-Performance Machining in 3D" discusses the importance of high-performance machining (HPM) in aerospace manufacturing, particularly when working with challenging materials like titanium. HPM involves fast light passes at high spindle speeds to maximize machine efficiency. To address the challenges of HPM, shops must consider factors like tool and machine rigidity, tool paths, and cooling systems. Advances in additive manufacturing now allow for 3D printing of coolant channels into milling heads, improving coolant flow to the cutting zone and enhancing machining parameters for aerospace materials. [Extracted from the article]

An image taken by the Wide-field Infrared Survey Explorer (WISE) satellite depicting the constellations Cassiopeia and Cepheus is presented, as is another image of the plasma wind tunnel used for spacecraft and materials testing at the Italian Aerospace Research Center (CIRA).

(Bloomberg) -- China is taking advantage of tumbling cobalt prices to build up its inventories of the metal used in electric-vehicle batteries and aerospace alloys. Ethical concerns about cobalt production from DRC have also fueled the shift away from cobalt in cathode chemistry. [Extracted from the article]

(Bloomberg) -- Indonesia has become the world's second-largest cobalt producer, bolstering its bid to be a big player in the electric-vehicle supply chain. The biggest global nickel producer Tsingshan Holding Group Co., cobalt refining giant Zhejiang Huayou Cobalt and the top battery manufacturer known as CATL are among investors. [Extracted from the article]

The article offers brief information on various space vehicles and equipment including Falcon Heavy from Space Exploration Technologies Corp., Mars Colonial Transporter (MCT) from NewSpace and CST-100 capsule from Boeing Co.

The article focuses on the legal information on the maintenance, rebuilding and alteration of aircraft equipments mentioned in the aircraft specifications issued by the U.S. Federal Aviation Administration (FAA) in Part 43, Appendix A. Topics include pilot certification, repair of landing gear tires and replacement of defective safety wiring of the aircraft. Also mentions the checking, and replacing magnetic chip detectors.

Status Graphite and Clover/ SKC Carbon Products both introduced headless basses with carbon-fibre necks paired with conventional wooden bodies which used neck-through construction. Despite being far from the first headless stringed instrument ever built, Ned Steinberger's brainchild was certainly the first commercially successful headless bass. In the early Eighties, Kramer introduced their variation on the Steinberger aesthetic, the aluminum-neck Duke bass. [Extracted from the article]

A calendar of events for different countries from February 11, 2013 to May 21, 2014 is presented which includes the American Society for Nondestructive Testing (ASNT) 22nd Research Symposium, the Nondestructive Evaluation of Aerospace Materials and Structures, and the Magnetic Particle Testing.

The article focuses on a study related to the pattern recognition in wavelet neural network. As per the study, fiberglass-reinforced plastics (FRPs) are used for several purposes including petrochemical, aerospace and shipbuilding. The study highlights that various techniques including signal processing and transient fast fourier transform are used to determine the damage type of a composite material. The study found the increase performance of wavelet analysis in the time-frequency domain.

The article focuses on the launch of traffic cameras into space by researchers at Lawrence Livermore National Laboratory. It notes that the move is aimed at augmenting their efforts to improve space-debris collision predictions. Furthermore, it mentions the Space-Based Telescopes for Actionable Refinement of Ephemeris (STARE) project which facilitates the prediction of collisions with high accuracy using improved positional information provided by nanosatellites.

An update on the latest prices for aerospace materials in the week ended Friday February 18. [ABSTRACT FROM AUTHOR]

An overview of the aerospace materials markets and the latest price moves. [ABSTRACT FROM AUTHOR]

An overview of the aerospace materials markets and the latest price moves. [ABSTRACT FROM AUTHOR]

An overview of the aerospace materials markets and the latest price moves. [ABSTRACT FROM AUTHOR]

An overview of the aerospace materials markets and the latest price moves. [ABSTRACT FROM AUTHOR]