Results 81 to 90 of about 23,202 (223)

Precipitation 3D printing of all-aramid materials for high-strength, heat-resistant applications

open access: yesMaterials & Design
Additive manufacturing (AM) of lightweight, high-performance engineering polymers is an important research focus in the automotive, electronics and aerospace industries.
Ruowen Tu   +2 more
doaj   +1 more source

Concepts for the development of light-weight composite structures for rotor burst containment [PDF]

open access: yes, 1977
Published results on rotor burst containment with single materials, and on body armor using composite materials were used to establish a set of hypotheses about what variables might control the design of a weight-efficient protective device.
Holms, A. G.
core   +1 more source

Enhancement of Interfacial Strength and Corrosion Resistance of Adhesives via Synergistic Effect of Metallic Surface Treatment and α‐ZrP Nanosheets

open access: yesPolymer Composites, EarlyView.
Synergistic enhancement of interfacial strength through α‐ZrP nanosheet reinforcement of polyurethane adhesive and aluminium anodization. ABSTRACT Polyurethane (PU) nanocomposites with enhanced mechanical performance and adhesive bonding are crucial for aerospace and automotive applications. This study investigates the reinforcing effect of α‐zirconium
Tomiris Zhumagaliyeva   +6 more
wiley   +1 more source

Effect of hybrid ratio on mechanical properties of carbon/aramid hybrid fiber multi-layered biaxial weft knitted fabric reinforced composites

open access: yesCailiao gongcheng, 2020
Carbon/aramid fiber hybrid multi-layered biaxial weft knitted fabric was prepared in term of intraply hybridization. The mechanical properties and effect of hybrid ratio on mechanical properties were studied.
QI Ye-xiong, JIANG Ya-ming, LI Jia-lu
doaj  

An active wearable dual-band antenna for GPS and Iridium satellite phone deployed in a rescue worker garment [PDF]

open access: yes, 2013
An active wearable dual-band circularly polarized microstrip patch antenna for Global Positioning System and Iridium satellite phone applications is presented. It is constructed using flexible foam and fabric substrates, combined with copper-on-polyimide
Declercq, Frederick   +2 more
core   +1 more source

Polyamide Acid–Based Surface Modification of Poly(p‐Phenylene Benzobisoxazole) Fibres Reinforcing Syntactic Foam for Using Them as High‐Performance Insulating Core Material

open access: yesHigh Voltage, EarlyView.
ABSTRACT The insulating core is an important part of pillar composite insulators used in power transmission systems. Traditional insulating core materials suffer from various problems that can threaten the reliability of insulated equipment. Syntactic foam (SF) exhibits excellent properties, such as a low density, water penetration resistance and high ...
Le Li   +8 more
wiley   +1 more source

Performance enhancement of nylon/Kevlar fiber composites through viscoelastically generated pre-stress [PDF]

open access: yes, 2013
Kevlar-29 fibers have high strength and stiffness but nylon 6,6 fibers have greater ductility. Thus by commingling these fibers prior to molding in a resin, the resulting hybrid composite may be mechanically superior to the corresponding single fiber ...
Cao   +26 more
core   +1 more source

Anisotropy in Dry‐Type Valve‐Side Bushings of Converter Transformer: Phenomena and Effects

open access: yesHigh Voltage, EarlyView.
ABSTRACT The safe and stable working of dry‐type valve‐side bushings, important components of converter transformers, is essential. In recent years, poor design has led to several core breakdown, flashover and cracking failures. The bushing cores, composed of crepe paper and aluminium foil, exhibit significant anisotropic physical properties due to its
Gaoyi Shang   +6 more
wiley   +1 more source

Biomechanical Performance of Polyethylene Fibers and Fiber‐Reinforced Composite Resins in Direct Restorations: A Scoping Review

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To assess the biomechanical performance of the application of polyethylene fiber and fiber‐reinforced composite resins in direct restorations. Materials and Methods An electronic search was performed in Cochrane Library, Embase, and Pubmed on January 16th, 2025, with previously identified MeSH and free text terms by two independent ...
Beatriz Fernandes   +5 more
wiley   +1 more source

Feasibility of Kevlar 49/PMR-15 Polyimide for High Temperature Applications [PDF]

open access: yes
Kevlar 49 aramid organic fiber reinforced PMR-15 polyimide laminates were characterized to determine the applicability of the material to high temperature aerospace structures.
Hanson, M. P.
core   +1 more source

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