Results 81 to 90 of about 38,727 (237)

Optimizing Viscoelastic Properties of Rubber Compounds for Ballistic Applications

Applied Sciences, 2020
Using interlayers of rubber adds a positive effect to the synergy of disruptor–absorber armors. Emerging from its viscoelasticity the material is able to transform mechanical stress into heat.
Janis Karl, Franziska Kirsch, Norbert Faderl, Leonhard Perko, Teresa Fras   +4 more
doaj   +1 more source

Static recrystallization of shocked calcite in Ries impact breccias

Meteoritics &Planetary Science, EarlyView.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann, Fabian Dellefant, Lina Seybold, Wolfgang W. Schmahl, Elena Sturm, Daniel Weidendorfer, Sandro Jahn, Iuliia V. Sleptsova, Stuart A. Gilder   +8 more
wiley   +1 more source

Flower and life strategy diversity in Teucrium L. (Lamiaceae) [PDF]

, 1999
. Diversidad floral y de estrategia de vida en Teucrium L. (Lamiaceae). Las flores de Teucrium L., muestran una gran diversidad en formas, características florales y mecanismos de polinización.
El Oualidi, Jalal, Navarro, Teresa
core   +2 more sources

Iran's Forward Defense in Sub‐Saharan Africa

Middle East Policy, EarlyView.
Abstract This article examines Iran's security and defense initiatives in sub‐Saharan Africa between 1990 and 2024 and how they reflect the extraterritorial application of the regime's forward defense doctrine. In response to the long‐term erosion of its homeland defense capabilities since the Iran‐Iraq War of the 1980s—driven by infrastructure ...
Ariel Limanya Limbu, Ronen A. Cohen
wiley   +1 more source

Signals, Red Lines, and Collision: The Israel‐Iran Spiral and US Intervention

Middle East Policy, EarlyView.
Abstract The Iran War erupted in February 2026 without UN authorization, and Washington's rationales—Iranian nuclear ambitions, missile capacity, and proxy threats—map more closely onto Israeli than US security interests. Why have we seen two major conflicts between these belligerents in less than one year?
Buğra Sari
wiley   +1 more source

Long-term natural ageing effects on the structural, mechanical, and ballistic performance of UHMWPE-based soft ballistic inserts

Materials & Design
The aim of the study was to evaluate the degradation mechanisms of ultra-high molecular polyethylene (UHMWPE) fibres used in soft ballistic inserts manufactured in 2003 and 2005 and used and stored in conditions typical for this type of products.
Katarzyna Kośla, Stefan Cichosz, Marcin H. Struszczyk, Wioleta Urbaniak, Ivan Domenech, Lucas Frochoso, Marzena Fejdyś   +6 more
doaj   +1 more source

Aramid composites impregnated with different reinforcement: Nanofibers, nanoparticles and nanotubes

Zaštita Materijala, 2014
In this study, the electrospun nanofibers, nanoparticles and nanotubes were used as reinforcement in order to improve mechanical properties of materials for ballistic protection.
Vera Obradović, Dušica Stojanović, Aleksandar Kojović, Irena Živković, Vesna Radojević, Petar Uskoković, Radoslav Aleksić   +6 more
doaj   +1 more source

Trump's Transactional Diplomacy: Breakthrough or Breakdown?

Middle East Policy, EarlyView.
Abstract The US‐Israeli war on Iran appears to demonstrate the perils of a transactional diplomacy that dismisses the rules‐based, liberal international order in pursuit of American dominance. Much of the growing literature assumes transactional diplomacy will be a temporary, Trump‐driven departure from traditional, values‐based statecraft. By contrast,
Guilain Denoeux, Robert Springborg
wiley   +1 more source

Biomimetic design and impact simulation of Al2O3/Al composite armor based on armadillo shell

Scientific Reports
The advancement of lightweight protective armors holds critical importance for enhancing the maneuverability and combat capabilities of helicopters. Leveraging insights from bionics, it provides a new idea for high-performance armor design. In this study,
Fulong Zhang, Peng Zhu, Ping Lu, kai Qian, Shuangyu Liu, Liyan Wang   +5 more
doaj   +1 more source

Influence of Fiber Fillers on The Ballistic Properties of Epoxy and Polyester Resins: A Review

Tikrit Journal of Engineering Sciences
Ballistic shields are considered a tactical measure to protect high-risk areas. Due to their advanced design, they provide effective protection against fragments and projectiles, reducing fatalities and preserving lives under adverse conditions ...
Mohanad L. Hamada, Saad R. Ahmed
doaj   +1 more source