Results 51 to 60 of about 444,562 (317)

Fatigue crack propagation in microcapsule toughened epoxy [PDF]

, 2004
The addition of liquid-filled urea-formaldehyde (UF) microcapsules to an epoxy matrix leads to significant reduction in fatigue crack growth rate and corresponding increase in fatigue life.
Brown, Eric N., Sottos, Nancy R., White, Scott R.   +2 more
core   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

CHEMICAL AND MORPHOLOGICAL EFFECTS OF POLYURETHANE AND LIQUID SILICONE RUBBER ON EPOXY COMPOSITES

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ
This study aimed to improve the morphological properties of Sikadur 52 epoxy resin by incorporating polyurethane (PU) and liquid silicone rubber (LSR) as toughening agents.
Roaa Mohammed Muneer
doaj   +1 more source

Physico-Mechanical Characterization of Composite Materials Based on Date Palm Tree Fibers

Journal of Natural Fibers, 2021
The aim of this research is to characterize physico-mechanically fibers extracted from different parts of a palm; This characterization shows that the physico-mechanical properties of this kind of fibers are different from one to another depending on the
Tarek Djoudi, Mabrouk Hecini, Daniel Scida, Youcef Djebloun, Hocine Djemai   +4 more
doaj   +1 more source

Functional characterization of the cytochrome P450 monooxygenase CYP71AU87 indicates a role in marrubiin biosynthesis in the medicinal plant Marrubium vulgare. [PDF]

, 2019
BackgroundHorehound (Marrubium vulgare) is a medicinal plant whose signature bioactive compounds, marrubiin and related furanoid diterpenoid lactones, have potential applications for the treatment of cardiovascular diseases and type II diabetes.
Addison, J Bennett, Dhanota, Puja, Fiehn, Oliver, Karunanithi, Prema S, Tong, Shen, Zerbe, Philipp   +5 more
core   +6 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Ballistic Performance of Lightweight Armor Aramid Fabric with Different Bounding Technologies

Fibers
The aim of this research was to develop a lightweight armor that could be used in bulletproof vests or vehicle protection, offering an alternative to the disadvantageous properties of high-strength steel plates.
István Péter Kondor, János Líska, Zsolt Ferenc Kovács   +2 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Investigation of dielectric properties and methylene intactness under multiple environmental stresses for high voltage epoxy composites

Materials Research Express, 2020
Epoxy decays its dielectric characteristics and exhibits degradation of main hydrocarbon on exposure to multiple environmental stresses. Inorganic oxides-based epoxy composites have been performingwell in many applications and short-term testing ...
Abraiz Khattak, Kashif Imran, Faiza, Asghar Ali, Abasin Ulasyar, Azhar Ul Haq, Muhammad Amin, Adam Khan   +7 more
doaj   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source